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C 001003
0 Antarctica
1 Region I
2 Region II
3 Region III
4 Region IV
5 Region V
6 Region VI
7 Missing value
C 001007
1 ERS1
2 ERS2
20 SPOT1
21 SPOT2
22 SPOT3
23 SPOT4
50 METEOSAT 3
51 METEOSAT 4
52 METEOSAT 5
53 METEOSAT 6
54 METEOSAT 7
150 GMS 3
151 GMS 4
152 GMS 5
200 NOAA 8
201 NOAA 9
202 NOAA 10
203 NOAA 11
204 NOAA 12
205 NOAA 14
220 LANDSAT 5
221 LANDSAT 6
240 DMSP 7
241 DMSP 8
242 DMSP 9
243 DMSP 10
244 DMSP 11
250 GOES 6
251 GOES 7
252 GOES 8
253 GOES 9
254 GOES 10
255 GOES 11
256 GOES 12
310 GOMS 1
311 GOMS 2
1023 Missing value
C 001031
0 Reserved
1 Melbourne
4 Moscow
7 US National Weather Service - National Meteorological Centre (NMC)
8 US National Weather Service Telecommunications Gateway (NMSTG)
10 Cairo
12 Dakar
14 Nairobi
16 Antananarivo
18 Tunis-Casablanca
20 Las Palmas
21 Algiers
22 Lagos
26 Khabarovsk
28 New Delhi
30 Novosibirsk
32 Tashkent
33 Jeddah
34 Tokyo, Japan Meteorological Agency
36 Bankok
37 Ulan Bator
38 Beijing
40 Seoul
41 Buenos Aires
43 Brasilia
45 Santiago
46 Brazilian Space Agency - INPE
51 Miami
52 Miami, National Hurricane Centre
53 Montreal
55 San Francisco
57 US Air Force - Air Force Global Weather Central
58 Fleet Numerical Meteorology and Oceanography Centre, Monterey, CA, USA
59 The NOAA Forecast Systems Laboratory, Boulder, CO, USA
60 National Centre for Atmospheric Research (NCAR)
64 Honolulu
65 Darwin
67 Melbourne
69 Wellington
74 UK Meteorological Office, Bracknell
76 Moscow
78 Offenbach
80 Rome
82 Norrköping
85 Toulouse
86 Helsinki
87 Belgrade
88 Oslo
89 Prague
90 Episkopi
91 Ankara
92 Frankfurt/Main
93 London
94 Copenhagen
95 Rota
96 Athens
97 European Space Agency (ESA)
98 European Centre for Medium Range Weather Forecasts (ECMWF)
99 De Bilt
212 Lisboa
255 (SoftBUFR Demo Site;-)
C 001033
0 Reserved
1 Melbourne
4 Moscow
7 US National Weather Service - National Meteorological Centre (NMC)
8 US National Weather Service Telecommunications Gateway (NMSTG)
10 Cairo
12 Dakar
14 Nairobi
16 Antananarivo
18 Tunis-Casablanca
20 Las Palmas
21 Algiers
22 Lagos
26 Khabarovsk
28 New Delhi
30 Novosibirsk
32 Tashkent
33 Jeddah
34 Tokyo, Japan Meteorological Agency
36 Bankok
37 Ulan Bator
38 Beijing
40 Seoul
41 Buenos Aires
43 Brasilia
45 Santiago
46 Brazilian Space Agency - INPE
51 Miami
52 Miami, National Hurricane Centre
53 Montreal
55 San Francisco
57 US Air Force - Air Force Global Weather Central
58 Fleet Numerical Meteorology and Oceanography Centre, Monterey, CA, USA
59 The NOAA Forecast Systems Laboratory, Boulder, CO, USA
60 National Centre for Atmospheric Research (NCAR)
64 Honolulu
65 Darwin
67 Melbourne
69 Wellington
74 UK Meteorological Office, Bracknell
76 Moscow
78 Offenbach
80 Rome
82 Norrköping
85 Toulouse
86 Helsinki
87 Belgrade
88 Oslo
89 Prague
90 Episkopi
91 Ankara
92 Frankfurt/Main
93 London
94 Copenhagen
95 Rota
96 Athens
97 European Space Agency (ESA)
98 European Centre for Medium Range Weather Forecasts (ECMWF)
99 De Bilt
212 Lisboa
255 (SoftBUFR Demo Site;-)
C 002001
0 Automatic
1 Manned
2 Hybrid: both manned and automatic
Type of instrumentation and original units for wind measurement (measured in m/s unless otherwise indicated)
C 002002
1 Certified instruments
2 Originaly measured in knots
3 Originaly measured in km/h
C 002003
0 Pressure instrument associated with wind measuring equipment
1 Optical theodolite
2 Radio theodolite
3 Radar
4 VLF-Omega
5 Loran-C
6 Wind profiler
7 Satellite navigation
14 Pressure instrument associated with wind measurement equipment but pressure element failed during ascent
Instrument or crop type - Type of data
C 002004
0 USA open pan evaporimeter (without cover) - Evaporation
1 USA open pan evaporimeter (mesh covered) - Evaporation
2 GGI-3000 evaporimeter (sunken) - Evaporation
3 20 m² tank - Evaporation
4 Others - Evaporation
5 Rice - Evapotraspiration
6 Wheat - Evapotraspiration
7 Maize - Evapotraspiration
8 Sorghum - Evapotraspiration
9 Other crops - Evapotraspiration
C 002011
0 Reserved
1 Reserved
2 No radiosonde - passive target (e.g. reflector)
3 No radiosonde - active target (e.g. transponder)
4 No radiosonde - passive temperature-humidity profiler
5 No radiosonde - active temperature-humidity profiler
6 No radiosonde - radio-acoustic sounder
9 No radiosonde - system unknown or not specified
10 VIZ type A pressure-commutated (USA)
11 VIZ type A time-commutated (USA)
12 RS SDC (Space Data Corporation - USA)
13 Astor (no longer made - Australia)
14 VIZ MARK I MICROSONDE (USA)
15 EEC Company type 23 (USA)
16 Elin (Austria)
17 GRAW G. (Germany)
19 GRAW M60 (Germany)
20 Indian Meteorological Service MK3 (India)
21 VIZ/Jin Yang MARK I MICROSONDE (South Korea)
22 Meisei RS2-80 (Japan)
23 Mesural FMO 1950A (France)
24 Mesural FMO 1945A (France)
25 Mesural MH73A (France)
26 Meteolabor Basora (Switzerland)
27 AVK-MRZ (Russian Federation)
28 Meteorit marz2-1 (Russian Federation)
29 Meteirit marz2-2 (Russian Federation)
30 Oki RS2-80 (Japan)
31 VIZ/Valcom type A pressure-commutated(Canada)
32 Shangai Radio (China)
33 UK Met Office MK3 (UK)
34 Vinohrady (Czechoslovakia)
35 Vaisala RS18 (Finland)
36 Vaisala RS21 (Finland)
37 Vaisala RS80 (Finland)
38 VIZ LOCATE Loran-C (USA)
39 Sprenger E076 (Germany)
40 Sprenger E084 (Germany)
41 Sprenger E085 (Germany)
42 Sprenger E086 (Germany)
43 AIR IS - 4A - 1680 (USA)
44 AIR IS - 4A - 1680 X (USA)
45 RS MSS (USA)
46 Air IS - 4A - 403 (USA)
47 Meislei RS2-91 (Japan)
48 Valcom (Canada)
49 VIZ MARK II (USA)
50 GRAW DFM-90 (Germany)
51 VIZ-B2 (USA)
52 Vaisala RS80-57H
60 Vaisala RS80/MicroCora (Finland)
61 Vaisala RS80/DigiCora or Marwin (Finland)
62 Vaisala RS80/PCCora (Finland)
63 Vaisala RS80/Star (Finland)
64 Orbital Sciences Corporation, Space Data Division, transponder radiosonde, type 909-11-xx (USA)
65 VIZ transponder radiosonde, model number 1499-520 (USA)
71 RS90/DigiCora or Marwin (Finland)
72 RS90/PC-Cora (Finland)
73 RS90/Autosonde (Finland)
74 RS90/Star (Finland)
90 Radiosonde not specified or unknown
91 Pressure-only radiosonde
92 Pressure-only radiosonde plus transponder
93 Pressure-only radiosonde plus radar-reflector
94 No-pressure radiosonde plus transponder
95 No-pressure radiosonde plus radar-reflector
96 Descending radiosonde
255 Missing value
(To be developed)
C 002013
0 No correction
1 CIMO solar corrected and CIMO infrared corrected
2 CIMO solar corrected and infrared corrected
3 CIMO solar corrected only
4 Solar and infrared corrected automatically by radiosonde system
5 Solar corrected automatically by radiosonde system
6 Solar and infrared corrected as specified by country
7 Solar corrected as specified by country
OBS: needs updating, from common code table C-7!
C 002014
0 No windfinding
1 Automatic with auxilary optical direction finding
2 Automatic with auxilary radio direction finding
3 Automatic with auxilary ranging
4 Not used
5 Automatic with multiple VLF-Omega signals
6 Automatic cross chain Loran-C
7 Automatic with auxiliary wind profiler
8 Automatic satellite navigation
19 Tracking technique not specified
99 Status of system and its components not specified
127 Missing value
C 002015
0 Reserved
1 Pressure only radiosonde
2 Pressure only radiosonde plus transponder
3 Pressure only radiosonde plus radar reflector
4 No-pressure radiosonde plus transponder
5 No-pressure radiosonde plus radar reflector
15 Missing value
C 002020
0 Nimbus
1 VTPR
2 Tiros 1 (Tiros, NOAA-6 to NOAA-13)
3 Tiros 2 (NOAA-14 onwards)
31 DMSP
61 EUMETSAT Polar System (EPS)
91 ERS
121 ADEOS
241 GOES
271 GMS
301 INSAT
331 METEOSAT Operational Programme (MOP)
332 METEOSAT Transitional Programme (MTP)
333 METEOSAT Second Generation Programme (MSG)
351 GOMS
381 FY-2
F 002021
1 High resolution infra red sounder (HIRS)
2 Microwave sounding unit (MSU)
3 Stratospheric sounding unit (SSU)
F 002022
1 Processing technique not defined
2 Automated statistical regression
3 Clear path
4 Partly cloudy path
5 Cloudy path
C 002023
1 Wind derived from cloud motion observed in the infrared channel
2 Wind derived from cloud motion observed in the visible channel
3 Wind derived from motion observed in the water vapour channel
4 Wind derived from motion observed in a combination of spectral channels
5 Wind derived from motion observed in the water vapour channel in clear air
6 Wind derived from motion obsorved in the ozone channel
7 Wind derived from cloud moton observed in water vapour channel (cloud or clear air not specified)
C 002024
0 Reserved
1 Table with full range of humidity variation in layer
2 Regression technique on 2 humidity values in layer
C 002025
1 Reserved
2 HIRS - Layer precipitable water
3 MSU - Layer precipitable water
6 HIRS - Tropopause temperature and pressure
7 MSU - Tropopause temperature and pressure
10 HIRS (1, 2, 3, 8, 9, 16, 17) - Total ozone
11 HIRS (1, 2, 3, 9, 17) - Total ozone
12 MSU - Total ozone
15 HIRS - Layer mean temperature
16 HIRS* - Layer mean temperature
17 MSU - Layer mean temperature
18 SKINTK (ocean only) - Layer mean temperature
21 HIRS - Channel combinations used to obtain mean temperatures for layers above 100 hPa
22 SSU - Channel combinations used to obtain mean temperatures for layers above 100 hPa
23 MSU (3, 4) - Channel combinations used to obtain mean temperatures for layers above 100 hPa
C 002030
0 Reserved
1 Reserved
2 GEK (Geomagnetic EloctroKinetograph)
3 Ship's set and drift determined by fixes 3-6 hours apart
4 Ship's set and drift determined by fixes more than 6 hours but less than 12 hours apart
7 Missing value
C 002031
0 Reserved
1 Instantaneous - between H-1 and H
2 Averaged over 3 minutes or less - between H-1 and H
3 Averaged over more than 3 minutes, but 6 at the most - between H-1 and H
4 Averaged over more than 6 minutes, but 12 at the most - between H-1 and H
5 Instantaneous - between H-2 and H-1
6 Averaged over 3 minutes or less - between H-2 and H-1
7 Averaged over more than 3 minutes, but 6 at the most - between H-2 and H-1
8 Averaged over more than 6 minutes, but 12 at the most - between H-2 and H-1
9 Vector or Doppler current profiling method not used
10 Reserved
11 1 Hour or less
12 More than 1 hour but 2 at the most
13 More than 2 hours but 4 at the most
14 More than 4 hours but 8 at the most
15 More than 8 hours but 12 at the most
16 More than 12 hours but 18 at the most
17 More than 18 hours but 24 at the most
18 Reserved
19 Drift method not used
31 Missing
C 002032
0 Values at selected depths (data points fixed by the instrument or selected by any other method)
1 Values at significant depths (data points taken from traces at significant depths)
2 Reserved
3 Missing value
C 002033
0 No salinity measured
1 In situ sensor, accuracy better than 0.02%o
2 In situ sensor, accuracy less than 0.02%o
3 Sample analysis
7 Missing value
C 002034
0 Reserved (to be developed)
31 Missing value
C 002036
0 Drifting buoy
1 Fixed buoy
2 Reserved
3 Missing value
C 002037
0 Reserved
1 Manual reading from vertical tide staff
2 Manual reading from single automatic recorder at station
3 Manual reading from multiple automatic recorders at station
4 Automatic reading from single automatic recorder at station without level reference check
5 Automatic reading from single automatic recorder at station with level reference check, or from multiple automatic recorders
7 Missing
C 002038
0 Ship intake
1 Bucket
2 Hull contact sencor
3 Reversing thermometer
4 STD/CTD sencor
5 Mechanical BT
6 Extndable BT
7 Digital BT
8 Thermistor Chain
9 Infrared scanner
10 Microwave scanner
15 Missing value
C 002039
0 Measured wet-bulb temperature
1 Iced bulb measured wet-bulb temperature
2 Computed wet-bulb temperature
3 Iced bulb computed wet-bulb temperature
7 Missing value
C 002040
0 Ship's motion removed by averaging - by bottom tracking
1 Ship's motion removed by motion compensation - by bottom tracking
2 Ship's motion not removed
3 Ship's motion removed by averaging - by navigation
4 Ship's motion removed by motion compensation - by navigation
5 Ship's motion not removed
6 Doppler current profiling method not used
C 002041
0 Information based on manual analysis
1 Information based on computer analysis
2 Information based on data assimilation
3 Information based on computer analysis or data assimsilation manually modified
63 Missing value
C 002051
0 Reserved
1 Maximum/minimum thermometers
2 Automated instruments
3 Thermograph
15 Missing value
C 002061
0 Inertial navigator system
1 Omega
7 Missing value
C 002062
0 ASDAR
1 ASDAR (ACARS also available but not operative)
2 ASDAR (ACARS also available and operative)
3 ACARS
4 ACARS (ASDAR also avalilable but not operative)
5 ACARS (ASDAR also available and operative)
15 Missing value
C 002064
0 Good
1 Bad
2 Reserved
C 002070
0 Actual location in seconds
1 Actual location in minutes
2 Actual location in degrees
3 Actual location in decidegrees
4 Actual location om centidegrees
5 Referenced to checkpoint in seconds
6 Referenced to checkpoint in minutes
7 Referenced to checkpoint in degrees
8 Referenced to checkpoint in decidegrees
9 Referenced to checkpoint in centidegrees
10 Actual location in tenths of a minute
11 Referenced to checkpoint in tenths of a minute
15 Missing value
C 002101
0 Centre front-fed paraboloid
1 Offset front-fed paraboloid
2 Centre Cassegrain paraboloid
3 Offset Cassegrain paraboloid
4 Planar array
5 Coaxial-collinear array
6 Yagi elements array
7 Microstrip
14 Other
15 Missing value
F 002103
1 Radar antenna is protected by a radome
2 Missing value
C 002104
0 Horizontal polarisation
1 Vertical polarisation
2 Right circular polarisation
3 Left circular polarisation
4 Horizontal and vertical polarisation
5 Right and left circular polarisation
15 Missing value
F 002131
1 STC operational
C 002150
0 Reserved
1 HIRS 1
2 HIRS 2
3 HIRS 3
4 HIRS 4
5 HIRS 5
6 HIRS 6
7 HIRS 7
8 HIRS 8
9 HIRS 9
10 HIRS 10
11 HIRS 11
12 HIRS 12
13 HIRS 13
14 HIRS 14
15 HIRS 15
16 HIRS 16
17 HIRS 17
18 HIRS 18
19 HIRS 19
20 HIRS 20
21 MSU 1
22 MSU 2
23 MSU 3
24 MSU 4
25 SSU 1
26 SSU 2
27 SSU 3
28 AMSU-A 1
29 AMSU-A 2
30 AMSU-A 3
31 AMSU-A 4
32 AMSU-A 5
33 AMSU-A 6
34 AMSU-A 7
35 AMSU-A 8
36 AMSU-A 9
37 AMSU-A 10
38 AMSU-A 11
39 AMSU-A 12
40 AMSU-A 13
41 AMSU-A 14
42 AMSU-A 15
43 AMSU-B 1
44 AMSU-B 2
45 AMSU-B 3
46 AMSU-B 4
47 AMSU-B 5
48 AVHRR 1
49 AVHRR 2
50 AVHRR 3a
51 AVHRR 3b
52 AVHRR 4
53 AVHRR 5
C 002151
0 HIRS
1 MSU
2 SSU
3 AMSU-A1-1
4 AMSU-A1-2
5 AMSU-A2
6 AMSU-B
7 AVHRR
F 002152
1 High-resolution infrared sounder (HIRS)
2 Microwave sounding unit (MSU)
3 Stratospheric sounding unit (SSU)
4 AMI wind mode
5 AMI wave mode
6 AMI image mode
7 RADAR altimeter
8 ATSR
9 Geostationary imager
10 Geostationary sounder
11 Geostationary Earth radiation (GERB)
C 002163
0 Reserved
1 IRW height assignment
2 WV height assignment
3 H2O intercept height assignment
4 CO2 slicing height assignment
5 Low pixel max gradient
6 Higher pixel max gradient
7 Primary height assignment
8 Layer thickness assignment
C 002164
0 LP - Norms least square minimum
1 EN - Euclidean norm with radiance correlation
2 CC - Cross correlation
C 002166
Type not defined
1 Automated statistical regression
2 Clear path
3 Parly cloudy path
4 Cloudy path
C 002167
0 Method not defined
1 1b raw radiance
2 Processed radiance
F 008001
1 Surface
2 Standard level
3 Tropopause level
4 Maximum wind level
5 Significant level, temperature
6 Significant level, wind
C 008002
0 Observing rules for base of lowest cloud and cloud types of FM 12 SYNOP and FM 13 SHIP apply
1 First significant layer
2 Second significant layer
3 Third significant layer
4 Cumulonimbus layer
5 Ceiling
6 Cloud not detected below the following height(s)
7 Low cloud
8 Middle cloud
9 High cloud
63 Missing value
C 008003
0 Surface
1 Base of satellite sounding
2 Cloud top
3 Tropopause
4 Precipitable water
5 Sounding radiances
6 Mean temperatures
7 Ozone
63 Missing value
C 008004
3 Level flight, routine observation (LVR)
4 Level flight, highest wind encountered (LVW)
5 Ascending (ASC)
6 Descending(DES)
7 Missing value
C 008005
0 Reserved
1 Storm centre
2 Outer limit or edge of storm
3 Location of maximum wind
15 Missing value
C 008011
0 Quasi-stationary front at the surface
1 Quasi-stationary front above the surface
2 Warm front at the surface
3 Warm front above the surface
4 Cold front at the surface
5 Cold front above the surface
6 Occlusion
7 Instability line
8 Intertropical front
9 Convergence line
63 Missing value
C 008012
0 Land
1 Sea
2 Coast
3 Missing value
C 008013
0 Night
1 Day
2 Reserved
3 Missing value
C 008021
0 Reserved
1 Time series
2 Time averaged
3 Accumulated
4 Forecast
5 Forecast time series
6 Forecast time averaged
7 Forecast accumulated
8 Ensemble mean
9 Ensemble mean time series
10 Ensemble mean time averaged
11 Ensemble mean accumulated
12 Ensemble mean forecast
13 Ensemble mean forecast time series
14 Ensemble mean forecast averaged
15 Ensemble mean forecast accumulated
16 Analysis
17 Start of phenomenon
18 Radiosonde launch time
19 Start of orbit
20 End of orbit
21 Time of ascending node
22 Time of occurrence of wind shift
23 Reserved
24 Reserved
25 Reserved
26 Reserved
27 First guess
28 Start of scan
29 End of scan
30 Reserved
31 Missing value
Values 33-62 reserved for local use
C 008023
0 Reserved
1 Reserved
2 Maximum value
3 Minimum value
4 Mean value
5 Median value
6 Modal value
7 Mean absolute error
8 Reserved
9 Best estimate of standard deviation (N-1)
10 Standard deviation (N)
11 Harmonic mean
12 Root-mean-square vector error
32 Vector mean
63 Missing
Note: All first order statistics are in the units defined by the original data descriptors.
C 008024
2 Observed minus maximum
3 Observed minus minimum
4 Observed minus mean
5 Observed minus median
6 Observed minus mode
11 Observed minus climatology (anomaly)
12 Observed minus analysed value
13 Observed minus initialized analysed value
14 Observed minus forecast value
21 Observed minus interpolated value
22 Observed minus hydrostatically calculated value
63 Missing
C 008025
0 Reserved
1 Local Standard Time
15 Missing
C 008051
1 Pressure
2 Temperature
3 Extreme temperature
4 Vapour pressure
5 Precipitation
6 Sunshine duration
7 Missing value
C 008052
0 Mean wind speed over a 10-minute period observed or recorded equal to or more than 10 m/s or 20 knots
1 Mean wind speed over a 10-minute period observed or recorded equal to or more than 20 m/s or 40 knots
2 Mean wind speed over a 10-minute period observed or recorded equal to or more than 30 m/s or 60 knots
3 Maximum temperature less than 273.2 K (0°C)
4 Maximum temperature equal or more than 298.2 K (25°C)
5 Maximum temperature equal or more than 303.2 K (30°C)
6 Maximum temperature equal or more than 308.2 K (35°C)
7 Maximum temperature equal or more than 313.2 K (40°C)
8 Minimum temperature less than 273.2 K (0°C)
9 Maximum temperature equal or more than 273.2 K (0°C)
10 Precipitation equal or more than 1.0 kg/m²
11 Precipitation equal or more than 5.0 kg/m²
12 Precipitation equal or more than 10.0 kg/m²
13 Precipitation equal or more than 50.0 kg/m²
14 Precipitation equal or more than 100.0 kg/m²
15 Precipitation equal or more than 150.0 kg/m²
16 Snow depth more than 0.00 m
17 Snow depth more than 0.01 m
18 Snow depth more than 0.10 m
19 Snow depth more than 0.50 m
20 Horizontal visibility less than 50 m
21 Horizontal visibility less than 100 m
22 Horizontal visibility less than 1000 m
23 Hail
24 Thunderstorm
31 Missing value
C 008053
0 Value occurred on only one day in the month
1 Value occurred on more than one day in the month
2 Reserved
3 Missing value
C 008070
0 Reserved
1 Reserved
2 Earth located instrument counts, calibration coefficients and housekeeping (level 1b)
3 Earth located calibrated radiances (level 1c)
4 Mapped to a common footprint, Earth located calibrated radiances (level 1d)
C 008072
0 Mixed
1 Clear
2 Cloudy
C 010063
0 Increasing, then decreasing: atmospheric pressure the same or higher than 3 hours ago
1 Increasing, then steady; or increasing, then more slowly - pressure now higher than 3 hours ago
2 Increasing (steadily or unsteadily) - pressure now higher than 3 hours ago
3 Decreasing or steady, then increasing; or increasing, then increasing more rapidly - pressure now higher than 3 hours ago
4 Steady; atmospheric pressure the same as 3 hours ago
5 Decreasing; then increasing; atmospheric pressure the same or lower than 3 hours ago
6 Decreasing, then steady; or decreasing, then decreasing more slowly - pressure now lower than 3 hours ago
7 Decreasing (steadily or unsteadely) - pressure now lower than 3 hours ago
8 Steady or increasing, then decreasing; or decreasing, then decreasing more rapidly - pressure now lower than 3 hours ago
15 Missing
C 011031
0 Nil, in cloud
1 Slight, in cloud
2 Moderate, in cloud
3 Severe, in cloud
4 Nil, in clear air
5 Slight, in clear air
6 Moderate, in clear air
7 Severe, in clear air
8 Nil, cloud/clear air not specified
9 Slight, cloud/clear air not specified
10 Moderate, cloud/clear air not specified
11 Severe, cloud/clear air not specified
12 Extreme, in clear air
12 Extreme, in cloud
12 Extreme, cloud/clear air not specified
15 Missing value
C 013041
1 A
2 A-B
3 B
4 B-C
5 C
6 D
7 E
8 F
9 G
15 Missing value
C 013051
0 Smaller than any value in the 30-year period
1 In the first quintile
2 In the second quintile
3 In the third quintile
4 In the fourth quintile
5 In the fifth quintile
6 Greater than any value in the 30-year period
15 Missing value
C 019001
0 Depression or low (extratropical)
1 Tropical depression
2 Tropical storm
3 Severe tropical storm
4 Typhoon
63 Missing value
C 019008
0 Reserved
1 Shallow (top of circulation below 700-hPa level)
2 Shallow (top of between 700-hPa and 400-hPa level)
3 Deep (top above 400-hPa level)
7 Missing value
C 020003
0 Cloud development not observed or not observable
1 Clouds generally dissolving or becoming less developed
2 State of sky on the whole unchanged
3 Clouds generally forming or developing
4 Visibility reduced by smoke, e.g. veldt or forest fires, industrial smoke or volcanic ashes
5 Haze
6 Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation
7 Dust or sand raised by wind at or near the station at the time of observation, but no well-developed dust whril(s) or sand whril(s), and no duststorm or sandstorm seen; or, in the case of sea stations and coastal, blowing spray at the station
8 Well-developed dust whril(s) or sand whrils seen at or near the station during the preceding hour or at the same time of observation, but no duststorm or sandstorm
9 Duststorm or sandstorm within sight at the time of observation, or at the station during the preceding hour
10 Mist
11 Paches of shallow fog or ice at the station, whether on land or sea, not deeper than 2 metres on land or 10 metres at sea
12 More or less continuous shallow fog or ice at the station, whether on land or sea, not deeper than 2 metres on land or 10 metres at sea
13 Lightning visible, no thunder heard
14 Precipitation within sight, not reaching the ground or the surface of the sea
15 Precipitation within sight, reaching the ground or the surface of the sea, but distant, i.e. estimated to be more than 5 km from the station
16 Precipitation within sight, reaching the ground or the surface of the sea, near to, but not at the station
17 Thunderstorm, but no precipitation at the time of observation
18 Squalls at or within sight of the station during the preceding hour or at the time of observation
19 Funnel cloud(s) at or within sight of the station during the preceding hour or at the time of observation
20 Drizzle (not freezing) or snow grains, not falling as shower(s); during the preceding hour but not at the time of observation
21 Rain (not freezing), not falling as shower(s); during the preeceding hour but not at the time of observation
22 Snow, not falling as shower(s); during the preceding hour but not at the time of observation
23 Rain and snow or ice pellets, not falling as shower(s); during the preceding hour but not at the time of observation
24 Freezing drizzle or freezing rain, not falling as shower(s); during the preceding hour but not at the time of observation
25 Shower(s) of rain; during the preceding hour but not at the time of observation
26 Shower(s) of snow, or of rain and snow; during the preceding hour but not at the time of observation
27 Shower(s) of hail, or of rain and hail; during the preceding hour but not at the time of observation
28 Fog or ice fog; during the preceding hour but not at the time of observation
29 Thunderstorm (with or without precipitation); during the preceding hour but not at the time of observation
30 Slight or moderate duststorm or sandstorm, has decreased during the preceding hours
31 Slight or moderate duststorm or sandstorm, no appreciable change during the preceding hour
32 Slight or moderate duststorm or sandstorm, has begun or has inceased during the preceding hour
33 Severe duststorm or sandstorm, has decreased during the preceding hours
34 Severe duststorm or sandstorm, no appreciable change during the preceding hour
35 Severe duststorm or sandstorm, has begun or has increased during the preceding hour
36 Slight or moderate drifting snow, generally low (below eye level)
37 Heavy drifting snow, generally low (below eye level)
38 Slight or moderate blowing snow, generally high (above eye level)
39 Heavy blowing snow, generally high (above eye level)
40 Fog or ice fog at a distance at the time of observation, but not at the station during the preceding hour, the fog or ice fog extending to a level above that of the observer
41 Fog or ice fog in patches
42 Fog or ice fog, sky visible, has become thinner during the preceding hour
43 Fog or ice fog, sky invisible, has become thinner during the preceding hour
44 Fog or ice fog, sky visible, no appreciable change during the preceding hour
45 Fog or ice fog, sky invisible, no appreciable change during the preceding hour
46 Fog or ice fog, sky visible, has begun or has become thicker during the preceding hour
47 Fog or ice fog, sky invisible, has begun or has become thicker during the preceding hour
48 Fog, depositing rime, sky visible
49 Fog, depositing rime, sky invisible
50 Drizzle, not freezing, intermittent, slight at time of observation
51 Drizzle, not freezing, continuous, slight at time of observation
52 Drizzle, not freezing, intermittent, moderate at time of observation
53 Drizzle, not freezing, continuous, moderate at time of observation
54 Drizzle, not freezing, intermittent, heavy (dense) at the time of observation
55 Drizzle, not freezing, continuous, heavy (dense) at the time of observation
56 Drizzle, freezing, slight
57 Drizzle, freezing, moderate or heavy (dense)
58 Drizzle and rain, slight
59 Drizzle and rain, moderate or heavy
60 Rain, not freezing, intermittent, slight at time of observation
61 Rain, not freezing, continuous, slight at time of observation
62 Rain, not freezing, intermittent, moderate at time of observation
63 Rain, not freezing, continuous. moderate at time of observation
64 Rain, not freezing, intermittent, heavy at time of observatioon
65 Rain, not freezing, continuous, heavy at time of observation
66 Rain, freezing, slight
67 Rain, freezing, moderate or heavy
68 Rain or drizzle and snow, light
69 Rain or drizzle and snow, moderate or heavy
70 Intermittent fall of snowflakes, slight at time of observation
71 Continuous fall of snowflakes, slight at time of observation
72 Intermittent fall of snowflakes, moderate at time of observation
73 Continuous fall of snowflakes, moderate at time of observation
74 Intermittent fall of snowflakes, heavy at time of observatioons
75 Continuous fall of snowflakes, heavy at time of observatioons
76 Diamond dust (with or without fog)
77 Snow grains (with or without fog)
78 Isolated star-like snow crystals (with or without fog)
79 Ice pellets
80 Rain shower(s), slight
81 Rain shower(s), moderate or heavy
82 Rain shower(s), violent
83 Shower(s) of rain and snow mixed, slight
84 Shower(s) of rain and snow mixed, moderate or heavy
85 Snow shower(s), slight
86 Snow shower(s), moderate or heavy
87 Shower(s) of snow pellets or small hail, with or without rain or rain and snow mixed, slight
88 Shower(s) of snow pellets or small hail, with or without rain or rain and snow mixed, moderate or heavy
89 Shower(s) of hail, with or without rain or rain and snow mixed, not associated with thunder, slight
90 Shower(s) of hail, with or without rain or rain and snow mixed, not associated with thunder, moderate or heavy
91 Slight rain at time of observation, thunderstorm during the preceding hour but not at time of observation
92 Moderate or heavy rain at time of observation, thunderstorm during the preceding hour but not at time of observation
93 Slight snow, or rain and snow mixed or hail at time of observation, thunderstorm during the preceding hour but not at time of observation
94 Moderate or heavy snow, or rain and snow mixed or hail at time of observation, thunderstorm during preceding hour but not at time of observation
95 Thunderstorm, slight or moderate, without hail, but with rain and/or snow at time of observation
96 Thunderstorm, slight or moderate, with hail at time of observation
97 Thunderstorm, heavy, without hail, but with rain and/or snow at time of observation
98 Thunderstorm combined with duststorm or sandstorm at time of observation
99 Thunderstorm, heavy, with hail at time of observation
100 No significant weather observed
101 Clouds generally dissolving or becoming less developed during the past hour
102 State of sky on the whole unchanged during the past hour
103 Clouds generally forming or developing during the past hour
104 Haze or smoke, or dust in suspension in the air, visibility equal to, or greater than, 1 km
105 Haze or smoke, or dust in suspension in the air, visibility less than 1 km
110 Mist
111 Diamond dust
112 Distant lighting
118 Squalls
120 Fog
121 PRECIPITATION
122 Drizzle (not freezing) or snow grains
123 Rain (not freezing)
124 Snow
125 Freezing drizzle or freezing rain
126 Thunderstorm (with or without precipitation)
127 BLOWING OR DRIFTING SNOW OR SAND
128 Blowing or drifting snow or sand, visibility equal to, or grater than, 1 km
129 Blowing or drifting snow or sand, visibility less than 1 km
130 FOG
131 Fog or ice fog, in patches
132 Fog or ice fog, has become thinner during past hour
133 Fog or ice fog, no appreciable change during past hour
134 Fog or ice fog, has begun or become thicker during past hour
135 Fog, deposition rime
140 PRECIPITATION
141 Precipitation, slight or moderate
142 Precipitation, heavy
143 Liquid precipitation, slight or moderate
144 Liquid precipitation, heavy
145 Solid precipitation, slight or moderate
146 Solid precipitation, heavy
147 Freezing precipitation, slight or moderate
148 Freezing precipitation, heavy
150 DRIZZLE
151 Drizzle, not freezing, slight
152 Drizzle, not freezing, moderate
153 Drizzle, not freezing, heavy
154 Drizzle, freezing, slight
155 Drizzle, freezing, moderate
156 Drizzle, freezing, heavy
157 Drizzle and rain, slight
158 Drizzle and rain, moderate or heavy
160 RAIN
161 Rain, not freezing, slight
162 Rain, not freezing, moderate
163 Rain, not freezing, heavy
164 Rain, freezing, slight
165 Rain, freezing, moderate
166 Rain, freezing, heavy
167 Rain (or drizzle) and snow, slight
168 Rain (or drizzle) and snow, moderate and heavy
170 SNOW
171 Snow, slight
172 Snow, moderate
173 Snow, heavy
174 Ice pellets, slight
175 Ice pellets, moderate
176 Ice pellets, heavy
180 SHOWER(S) or INTERMITTENT PRECIPITATION
181 Rain shower(s) or intermittent rain, slight
182 Rain shower(s) or intermittent rain, moderate
183 Rain shower(s) or intermittent rain, heavy
184 Rain shower(s) or intermittent rain, violent
185 Snow shower(s) or intermittent snow, slight
186 Snow shower(s) or intermittent snow, moderate
187 Snow shower(s) or intermittent snow, heavy
190 THUNDERSTORM
191 Thunderstorm, slight or moderate, with no precipitation
192 Thunderstorm, slight or moderate, with rain showers and/or snow showers
193 Thunderstorm, slight or moderate, with hail
194 Thunderstorm, heavy, with no precipitation
195 Thunderstorm, heavy, with rain showers and/or snow showers
196 Thunderstorm, heavy, with hail
199 Tornado
204 Volcanic ash suspended in the air aloft
206 Thick dust haze, visibility less than 1 km
207 Blowing spray at the station
208 Drifting dust (sand)
209 Wall of dust or sand in distance (like haboob)
210 Snow haze
211 Whiteout
213 Lightning, cloud to surface
217 Dry thunderstorm
219 Tornado cloud (destructive) at or within sight of the station during preceding hour or at the time of observation
220 Deposition of volcanic ash
221 Deposition of dust or sand
222 Deposition of dew
223 Deposition of wet snow
224 Deposition of soft rime
225 Deposition of hard rime
226 Deposition of hoar frost
227 Deposition of glaze
228 Deposition of ice crust (ice slick)
230 Duststorm or sandstorm with temperature below 0°C degrees
239 Blowing snow, impossible to determine whether snow is falling or not
241 Fog on sea
242 Fog in valleys
243 Arctic or Antarctic sea smoke
244 Steam fog (sea, lake or river)
245 Steam fog (land)
246 Fog over ice or snow cover
247 Dence fog visibility 60-90 m
248 Dence fog visibility 30-60 m
249 Dence fog visibility less than 30 m
250 Drizzle, rate of fall less than 0.10 mm/h
251 Drizzle, rate of fall 0.10 - 0.19 mm/h
252 Drizzle, rate of fall 0.20 - 0.39 mm/h
253 Drizzle, rate of fall 0.40 - 0.79 mm/h
254 Drizzle, rate of fall 0.80 - 1.59 mm/h
255 Drizzle, rate of fall 1.60 - 3.19 mm/h
256 Drizzle, rate of fall 3.20 - 6.39 mm/h
257 Drizzle, rate of fall 6.40 mm/h or more
259 Drizzle and snow
260 Rain, rate of fall less than 1.0 mm/h
261 Rain, rate of fall 1.0 - 1.9 mm/h
262 Rain, rate of fall 2.0 - 3.9 mm/h
263 Rain, rate of fall 4.0 - 7.9 mm/h
264 Rain, rate of fall 8.0 - 15.9 mm/h
265 Rain, rate of fall 16.0 - 31.9 mm/h
266 Rain, rate of fall 32.0 - 63.9 mm/h
267 Rain, rate of fall 64.0 mm/h or more
270 Snow, rate of fall less than 1.0 cm/h
271 Snow, rate of fall 1.0 - 1.9 cm/h
272 Snow, rate of fall 2.0 - 3.9 cm/h
273 Snow, rate of fall 4.0 - 7.9 cm/h
274 Snow, rate of fall 8.0 - 15.9 cm/h
275 Snow, rate of fall 16.0 - 31.9 cm/h
276 Snow, rate of fall 32.0 - 63.9 cm/h
277 Snow, rate of fall 64.0 cm/h or more
278 Snow or ice cristal precipitation from a clear sky
279 Wet snow, freezing on contact
280 Precipitation of rain (code figures = 87-99)
281 Precipitation of rain, freezing (code figures = 80-82)
282 Precipitation of rain and snow mixed
283 Precipitation of snow
284 Precipitation of snow pellets or small hail
285 Precipitation of snow pellets or small hail, with rain
286 Precipitation of snow pellets or small hail, with rain and snow mixed
287 Precipitation of snow pellets or small hail, with snow
288 Precipitation of hail
289 Precipitation of hail, with rain
290 Precipitation of hail, with rain and snow mixed
291 Precipitation of hail, with snow
292 Shower(s) or thunderstorm over sea
293 Shower(s) or thunderstorm over mountains
508 No significant phenomena to report, present and past weather omitted
509 Not observed, no data available, present and past weather omitted
510 Present and past weather missing, but expected
511 Missing value
C 020004
0 Cloud covering ½ or less of the sky throughout the approppriate period
1 Cloud covering more than ½ of the sky during part of the appropriate period and covering ½ or less during part of the period
2 Cloud covering more than ½ of the sky throughout the approppriate period
3 Sandstorm, duststorm or blowing snow
4 Fog or ice or thick haze
5 Drizzle
6 Rain
7 Snow, or rain and snow mixed
8 Shower(s)
9 Thunderstorm(s) with or without precipitation
10 No significant weather observed
11 VISIBILITY REDUCED
12 Blowing phenomena, visibility reduced
13 FOG
14 PRECIPITATION
15 Drizzle
16 Rain
17 Snow or ice pellets
18 Showers or intermittent precipitation
19 Thunderstorm
31 Missing value
C 020005
0 Cloud covering ½ or less of the sky throughout the approppriate period
1 Cloud covering more than ½ of the sky during part of the appropriate period and covering ½ or less during part of the period
2 Cloud covering more than ½ of the sky throughout the approppriate period
3 Sandstorm, duststorm or blowing snow
4 Fog or ice or thick haze
5 Drizzle
6 Rain
7 Snow, or rain and snow mixed
8 Shower(s)
9 Thunderstorm(s) with or without precipitation
10 No significant weather observed
11 VISIBILITY REDUCED
12 Blowing phenomena, visibility reduced
13 FOG
14 PRECIPITATION
15 Drizzle
16 Rain
17 Snow or ice pellets
18 Showers or intermittent precipitation
19 Thunderstorm
31 Missing value
C 020008
0 Sky clear
1 Few
2 Scattered
3 Broken
4 Overcast
5 Reserved
6 Scattered/broken
7 Broken/overcast
8 Isolated
9 Isolated embedded
10 Occasional
11 Occasional embedded
12 Frequent
13 Dense
14 Layers
C 020011
0 0 oktas (0/10)
1 1 okta or less, but not zero (1/10 or less, but not zero)
2 2 oktas (2/10 - 3/10)
3 3 oktas (4/10)
4 4 oktas (5/10)
5 5 oktas (6/10)
6 6 oktas (7/10 - 8/10)
7 7 oktas or more, but not 8 oktas (9/10 or more, but not 10/10)
8 8 oktas (10/10)
9 Sky obscured by fog and/or other meteorological phenomena
10 Sky partially obscured by fog and/or other meteorological phenomena
11 Scattered
12 Broken
15 Cloud cover is indiscernible for reasons other than fog or other meteorological phenomena, or observation is not made
C 020012
0 Cirrus (Ci)
1 Cirrocumulus (Cc)
2 Cirrostratus (Cs)
3 Altocumulus (Ac)
4 Altostratus (As)
5 Nimbostratus (Ns)
6 Stratocumulus (Sc)
7 Stratus (St)
8 Cumulus (Cu)
9 Cumulonimbus (Cb)
10 No CH clouds
11 Cirrus fibratus, sometimes uncinus, not progressively invading the sky
12 Cirrus spissatus, in patches or entangled sheaves, which usually do not increase and sometimes seem to be the remains of the upper part of a Cumulonimbus; or Cirrus castellanus or floccus
13 Cirrus spissatus cumulonimbogenitus
14 Cirrus uncinus or fibratus, or both, progressively invading the sky; they generally thicken as a whole
15 Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole, but the continuous veil does not reach 45 degrees above the horizon
16 Cirrus (often in bands) and cirrostratus, or cirrostratus alone, progressively invading the sky; they generally thicken as a whole, but the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered
17 Cirrostratus covering the whole sky
18 Cirrostratus not progressively invading the sky and not entirely covering it
19 Cirrocumulus alone, or Cirrocumulus predominant among the CH clouds
20 No CM clouds
21 Altostratus translucidus
22 Altostratus opacus or Nimbostratus
23 Altocumulus translucidus at a single level
24 Patches (often lenticularis) of Altocumulus translucidus, continually changing and occuring at one or more levels
25 Altocumulus translucidus in bands, or one or more layers of Altocumulus translucidus or opacus, progressively invading the sky; these Altocumulus clouds generally thicken as a whole
26 Altocumulus cumulogenitus (or cumulonimbogenitus)
27 Altocumulus translucidus or opacus in two or more layers, or Altocumulus opacus in a single layer, not progressively invading the sky, or Altocumulus with Altostratus or Nimbostratus
28 Altocumulus castellanus or flocus
29 Altocumulus of chaotic sky, generally at several levels
30 No CL clouds
31 Cumulus humilis or Cumulus fractus other than of bad weather, or both
32 Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level
33 Cumulonimbus calvus, with or without Cumulus, Stratocumulus or Stratus
34 Stratocumulus cumulogenitus
35 Stratocumulus other than Stratocumulus cumulogenitus
36 Stratus nebulosus or Stratus fractus other than of bad weather, or both
37 Stratus fractus or Cumulus fractus of bad weather, or both (pannus), usually below Altostratus or Nimbostratus
38 Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels
39 Cumulonimbus capillatus (often with an anvil), with or without Cumulonimbus calvus, Cumulus, Stratocumulus, Stratus or pannus
40 CH
41 CM
42 CL
59 Cloud not visible owing to darkness, fog, duststorm, sandstorm, or other analogous phenomena
60 CH clouds invisible owing to darkness, fog, duststorm, sandstorm, or other similar phenomena, or because of a continuous layer of lower clouds
61 CM clouds invisible owing to darkness, fog, duststorm, sandstorm, or other similar phenomena, or because of a continuous layer of lower clouds
62 CL clouds invisible owing to darkness, fog, duststorm, sandstorm, or other similar phenomena
63 Missing value
C 020017
0 Isolated cloud fragments of cloud
1 Continuous cloud, flat tops
2 Broken cloud - small breaks, flat tops
3 Broken cloud - large breaks, flat tops
4 Continuous cloud - undulating tops
5 Broken cloud - small breaks, undulated tops
6 Broken cloud - large breaks, undulated tops
7 Continuous or almost continuous waves with towering clouds above the top of the layer
8 Groups of waves with towering clouds above the top of the layer
9 Two or more layers at different levels
15 Missing value
C 020032
0 Ice not building up
1 Ice building up slowly
2 Ice building up quickly
3 Ice melting or breaking up slowly
4 Ice melting or breaking up rapidly
7 Missing value
F 020033
1 Icing from ocean spray
2 Icing from fog
3 Icing from rain
C 020034
0 No sea ice in sight
1 Ship in open lead more than 1.0 nautical mile wide, or ship in fast ice with boundary beyond limit of visibility
2 Sea ice present in concetration less than 3/10 (3/8), open water or very open pack ice, sea ice concetration is uniform in the observation area, ship in ice or within 0.5 nautical mile of ice edge
3 4/10 to 6/10 (3/8 to less than 6/8), open pack ice, sea ice concetration is uniform in the observation area, ship in ice or within 0.5 nautical mile of ice edge
4 7/10 to 8/10 (6/8 to less than 7/8), close pack ice, sea ice concetration is uniform in the observation area, ship in ice or within 0.5 nautical mile of ice edge
5 9/10 or more, but not 10/10 (7/8 to less than 8/8), very close pack ice, sea ice concetration is uniform in the observation area, ship in ice or within 0.5 nautical mile of ice edge
6 Strips and patches of pack ice with open water between, sea ice concentration is not uniform in the observation area, ship in ice or within 0.5 nautical mile of ice edge
7 Strips and patches of close or very close pack ice with areas of lesser concentration between, sea ice concetration is not uniform in the observation area, ship in ice or within 0.5 nautical mile of ice edge
8 Fast ice with open water, very open or open pack ice to seaward of the ice boundary, sea ice concentration is not uniform in the observation area, ship in ice or within 0.5 nautical mile of ice edge
9 Fast ice close or very close pack ice to seaward of the ice boundary, sea ice concetration is not uniform in the observation area, ship in ice or within 0.5 nautical mile of ice edge
14 Unable to report, because of darkness, lack of visibility, or because ship is more than 0.5 nautical mile away from ice edge
15 Missing value
C 020035
0 No ice of land origin
1 1-5 icebergs, no growlers or bergy bits
2 6-10 icebergs, no growlers or bergy bits
3 11-20 icebergs, no growlers or bergy bits
4 Up to and including 10 growlers and bergy bits - no icebergs
5 More than 10 growlers and bergy bits - no icebergs
6 1-5 icebergs, with growlers and bergy bits
7 6-10 icebergs, with growlers and bergy bits
8 11-20 icebergs, with growlers and bergy bits
9 More than 20 icebergs,with growlers and bergy bits - a major hazard to navigation
14 Unable to report, because of darkness, lack of visibility or because only sea ice is visible
15 Missing value
C 020036
0 Ship in open water with floating ice in sight
1 Ship in easily penetrable ice; conditions improving
2 Ship in easily penetrable ice; conditions not changing
3 Ship in easily penetrable ice; conditions worsening
4 Ship in ice difficult to penetrate; conditions improving
5 Ship in ice difficult to penetrate; conditions not changing
6 Ship in ice difficult to penetrate; conditions worsening. Ice forming and floes freezing together
7 Ship in ice difficult to penetrate; conditions worsening. Ice under slight pressure
8 Ship in ice difficult to penetrate; conditions worsening. Ice under moderate or severe pressure
9 Ship in ice difficult to penetrate; conditions worsening. Ship beset
30 Unable to report, because of darkness or lack of visibility
31 Missing value
C 020037
0 New ice only (frazil ice, grease ice, slush, shuga)
1 Nilas or ice rind, less than 10 cm thick
2 Young ice (grey ice, grey-white ice), 10-30 cm thick
3 Predominantly new and/and or young ice with some first-year ice
4 Predominantly thin first-year ice with some new and/or young ice
5 All thin first-year ice (30-70 cm thick)
6 Predominantly medium first-year ice (70-120 cm thick) and thick first-year ice (>120 cm thick) with some thinner (younger) first-year ice
7 All medium and thick first-year ice
8 Predominantly medium and thick first-year ice with some old (usually more than 2 metres thick)
9 Predominantly old ice
30 Unable to report, because of darkness, lack of visibility or because only ice of land origin is visible or because ship is more than 0.5 nautical mile away from ice edge
31 Missing value
C 020041
0 No icing
1 Light icing
2 Light icing in cloud
3 Light icing in precipitation
4 Moderate icing
5 Moderate icing in cloud
6 Moderate icing in precipitation
7 Severe icing
8 Severe icing in cloud
9 Severe icing in precipitation
10 Trace of icing
11 Trace of icing in cloud
12 Trace of icing in precipitation
15 Missing value
C 020062
0 Surface of ground dry (without cracks and no appreciable amount of dust or loose sand)
1 Surface of ground moist
2 Surface of ground wet (standing water in small or large pools on surface)
3 Flooded
4 Surface of ground frozen
5 Glaze on ground
6 Loose dust or sand not covering ground completely)
7 Thin cover of loose dry dust or sand covering ground completely
7 Moderate or thick cover of loose dry dust or sand covering ground completely
9 Extremely dry with cracks
10 Ground predominantly covered by ice
11 Compact or wet snow (with or without ice) covering less than one-half of the ground
12 Compact or wet snow (with or without ice) covering at least one-half of the ground but ground not completely covered
13 Even layer of compact or wet snow covering ground completely
14 Uneven layer of compact or wet snow covering ground completely
15 Loose dry snow covering less than one-half of the ground
16 Loose dry snow covering at least one-half of the ground but ground not completely covered
17 Even layer of loose dry snow covering ground completely
18 Uneven layer of loose dry snow covering ground completely
19 Snow covering ground completely; deep drifts
31 Missing value
(To be developed)
C 022061
0 Calm (glassy)
1 Calm (rippled); 0 - 0.1 m
2 Smooth (wavelets); 0.1 - 0.5 m
3 Slight; 0.5 - 1.2 m
4 Moderate; 1.25 - 2.5 m
5 Rough; 2.5 - 4 m
6 Very rough; 4 - 6 m
7 High; 6 - 9 m
8 Very high; 9 - 14 m
9 Phenomenal; over 14 m
15 Missing value
C 023001
0 Reserved
1 Articles 1 and 2
2 Article 3
3 Article 5.2
7 Missing value
C 023002
0 Reserved
1 Nuclear reactor on ground
2 Nuclear reactor at sea
3 Nuclear reactor in space
4 Nuclear fuel facility
5 Radioactive waste management facility
6 Transport of nuclear fuel or radioactive waste
7 Storage of nuclear fuel or radioactive waste
8 Manufacture of radio-isotopes
9 Use of radio-isotopes
10 Storage of radio-isotopes
11 Disposal of radio-isotopes
12 Transport of radio-isotopes
13 Use of radio-isotopes for power generation
30 Other
31 Missing data
C 023003
0 No release
1 Release to atmosphere
2 Release to water
3 Release to both atmosphere and water
4 Expected release to atmosphere
5 Expected release to water
6 Expected release to both atmosphere and water
7 missing value
C 023004
0 No countermeasures
1 Evacuation
2 Sheltering
3 Prophylaxis
4 Water
7 Missing value
C 023005
0 Incident State does not understand what happened
1 Incident State knows the cause of the incident
2 Reserved
3 Missing value
C 023006
0 No improvement
1 Unstable
2 No detoriation
3 Improving
4 Stable
5 Deteriorating
6 Reserved
7 Missing value
C 023007
0 No release
1 Release has stopped
2 Release
3 Release is continuing
7 Missing value
C 023008
0 Gaseous
1 Particulate
2 Mixture of gaseous and particulate
3 Missing value
C 023009
0 Gaseous
1 Particulate
2 Mixture of gaseous and particulate
3 Missing value
C 023016
0 No significant chemical toxic health effect
1 Significant chemical toxic health effect
2 Reserved
3 Missing value
C 023018
0 Release no longer occurring
1 Release still occurring
2 Release expected to increase in next 6 hours
3 Release expected to remain constant in next 6 hours
4 Release expected to decrease in next 6 hours
7 Missing value
C 023031
0 Plume will not encounter precipitation in incident State
1 Plume will encounter precipitation in incident State
2 Reserved
3 Missing value
C 023032
0 No significant change expected within the next 6 hours
1 Anticipated significant change expected within the next 6 hours
2 Reserved
3 Missing value
C 024003
0 Noble gases
1 Iodines
2 Caesium
3 Transuranics
31 Missing value
C 025004
0 Incoherent
1 Coherent (Doppler)
2 Reserved
3 Missing value
C 025005
0 Logarithm - 2.5 dB
1 Linear
2 Special
3 Missing value
C 025006
0 ZH to R conversion
1 (ZH,ZDR) to (NO,DO) to R
2 (Z(F1),Z(F2)) to attenuation to R
6 Other
3 Missing value
F 025009
1 None
2 Calibration target or signal
3 Against raingauges
4 Against other instruments (distrometer - attenuation)
C 025010
0 None
1 Map
2 Insertion of higher elevation data and map
3 Analysis of the fluctuating logarithm signal (clutter detection)
4 Extraction of the fluctuating part of the signal (clutter suppression)
5 Clutter suppression - Doppler
6 Multiparameter analysis
15 Missing value
C 025011
0 None
1 Map of correction factors
2 Interpolation (azimuth or elevation)
3 Missing value
C 025012
0 Hardware
1 Software
2 Hardware and software
3 Missing value
F 025013
1 Bright-band correction
F 025015
1 Radome attenuation correction
F 025017
1 Precipitation attenuation correction
C 025020
0 FFT (fast Fourier transform)
1 PPP (pulse-pair processing)
2 VPC (vector-phase shange)
3 Missing value
F 025021
1 Simple average
2 Consensus average
3 Median check
4 Vertical consistency check
5 Other
C 025030
0 Running mean sea-surface temperature not used because usage criteria not met
1 Running mean sea-surface temperature not used because data not available
2 Running mean sea-surface temperature used as predictor
3 Missing value
C 025032
0 Reserved
1 Data from low mode
2 Data from high mode
3 Missing value
C 025033
0 Wind profiler operating in submode A
1 Wind profiler operating in submode B
2 Reserved
3 Missing value
F 025034
1 Test A performed and failed
2 Test B performed and failed
3 Test results inconclusive
4 Reserved
C 025040
0 Non-specific mode
1 First guess data
2 Cloud vector data
3 Average vector data
4 Primary data
5 Guess data
6 Vector data
7 Tracer data; this image
8 Tracer data to next image
15 Missing value
C 025041
0 Direction originally reported in true degrees
1 Direction originally reported using Code table 0700, FM 13
2 Reserved
3 Missing vallue
C 025042
0 Speed originally reported in metres per second
1 Speed originally reported using Code table 4451, FM 13
2 Reserved
3 Missing vallue
F 025053
1 Good
2 Redundant
3 Questionable
4 Bad
5 Experimantal
6 Precipitating
F 026010
1 0100 included
2 0200 included
3 0300 included
4 0400 included
5 0500 included
6 0600 included
7 0700 included
8 0800 included
9 0900 included
10 1000 included
11 1100 included
12 1200 included
13 1300 included
14 1400 included
15 1500 included
16 1600 included
17 1700 included
18 1800 included
19 1900 included
20 2000 included
21 2100 included
22 2200 included
23 2300 included
24 2400 included
25 Unknown mixture of hours
C 029001
0 Gnomonic projection
1 Polar stereographic projection
2 Lambert's conformal conic projection
3 Mercator's projection
4 Scanning cone (radar)
7 Missing vallue
C 029002
0 Cartesian
1 Polar
2 Other
7 Missing vallue
C 030031
0 PPI
1 Composite
2 CAPPI
3 Vertical section
4 Alphanumeric data
5 Map of subject clutter
6 Map
7 Test picture
8 Comments
9 Map of ground occultation
10 Map of radar beam height
15 Missing vallue
F 030032
1 Map
2 Satellite IR
3 Satellite VIS
4 Satellite WV
5 Satellite multispectral
6 Synoptic observations
7 Forecast parameters
8 Lightning data
15 Other data
16 Missing value
C 031021
0 Reserved
1 1-bit indicator of quality; 0=good, 1=suspect or bad
2 2-bit indicator of quality; 0=good, 1=slightly suspected, 2=highly suspected, 3=bad
7 Percentage confidence
21 1-bit indicator of correction; 0=original value, 1=substituted/corrected value
63 Missing value
(Originally this is a FlagTable)
C 031031
0 Data present
1 Data not present
C 033002
0 Data not suspect
1 Data suspect
2 Reserved
3 Quality information not given
C 033003
0 Data not suspect
1 Data slightly suspect
2 Data highly suspect
3 Data considered unfit for use
7 Quality information not given
F 033030
1 Do not use scan for product generation
2 Time sequence error detected with this scan
3 Data gap precedes this scan
4 No calibration
5 No Earth location
6 First good time following a clock update
7 Instrument status changed with this scan
F 033031
1 Time field is bad but can probably be inferred from the previous good time
2 Time field is bad and can't be inferred from the previous good time
3 This record starts a sequence that is inconsistent with previous times (i.e. there is a time discontinuity). This may or may not be associated with a spacecraft clock update (see scan line status flags for ATOVS)
4 Start of a sequence that apparently repeats scan times that have been previously accepted
5 Scan line was not calibrated because of bad time
6 Scan line was calibrated using fewer thant the preferred number of scan lines because of prosimaty to start or end of data or to a data gap
7 Scan line was not calibrated because of bad or insufficient PRT data
8 Scan line was calibrated but with marginal PRT data
9 Some uncalibrated channels on this scan
10 Uncalibrated dure to insturment mode
11 Questionable calibration because of antenna prosition error of space view
12 Questionable calibration because of antenna position error of black body
13 Not Earth located because of bad time
14 Earth location questionable because of questionable time code (see time problem code bits)
15 Earth location questionable - fails reasonableness check
17 Earth location questionable because of antenna position check
F 033032
1 No good blackbody counts for scan line
2 No good space view counts for this line
3 No good PRTs for this line
4 Some bad blackbody view counts for this line
5 Some bad space view counts for this line
6 Some bad PRT temps on this line
Bits 2-21: bit n set to 1 if brightness temperature in channel n-1 is physically unreasonable or has not been calculated due to calibration problems
F 033033
1 Set if secondary calibration used
22 Set if all the channels are missing
23 Reserved bit set to zero
C 033035
0 Automatic quality control passed and not manually checked
1 Automatic quality control passed and manually checked and passed
2 Automatic quality control passed and manually checked and deleted
3 Automatic quality control failed and manually not checked
4 Automatic quality control failed and manually checked and failed
5 Automatic quality control failed and manually checked and re-inserted
F 033037
1 U departure from guess
2 V departure from guess
3 U and V departure from guess
4 U acceleration
5 V acceleration
6 U and V acceleration
7 Possible land feature
8 U acceleration and possible land feature
9 V acceleration and possible land feature
10 U and V acceleration and possible land feature
11 Bad wind guess
12 Correlation failure
13 Search box off edge of area
14 Target box off edge of area
15 Pixel brightness out of bounds (noisy line)
16 Target outside of latitude/longitude box
17 Target outside of pressure minimum/maximum
18 Autoeditor flagged slow vector
19 Autoeditor flagged vectors