Weather Symbols & Code Figures

These links redirect to information about WMO code figures, weather symbols and detailed descriptions.

amount of cloud | base of lowest cloud | low cloud | middle cloud | high cloud | visibility
rainfall period | pressure trend | wind direction | wind speed | past weather | present weather

Amount of Cloud

WMO Code Table 2700, total cloud cover & amount of lowest cloud.

The station circle is at the centre of the station plot and is represented by the symbol for total cloud cover. All other symbols and data are plotted around the station circle.

Code
Figure
Weather
Symbol
Description
0 symbol for no cloud No cloud
1 symbol for 1 okta of cloud 1 okta (eighth) of cloud or less, but not zero
2 symbol for 2 oktas of cloud 2 oktas of cloud
3 symbol for 3 oktas of cloud 3 oktas of cloud
4 symbol for 4 oktas of cloud 4 oktas of cloud (half the sky covered)
5 symbol for 5 oktas of cloud 5 oktas of cloud
6 symbol for 6 oktas of cloud 6 oktas of cloud
7 symbol for 7 oktas of cloud 7 oktas of cloud
8 symbol for 8 oktas of cloud 8 oktas of cloud (sky completely covered)
9 symbol for sky obscured Sky obscured
/ symbol for no cloud observation No observation made

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Base of Lowest Cloud

WMO Code Table 1600, height above surface of the base of the lowest cloud seen.

Code
Figure
Description
0 0 to 50 m (0 to 150 ft)
1 50 to 100 m (150 to 300 ft)
2 100 to 200 m (300 to 600 ft)
3 200 to 300 m (600 to 1,000 ft)
4 300 to 600 m (1,000 to 2,000 ft)
5 600 to 1,000 m (2,000 to 3,000 ft)
6 1,000 to 1,500 m (3,000 to 5,000 ft)
7 1,500 to 2,000 m (5,000 to 6,500 ft)
8 2,000 to 2,500 m (6,500 to 8,000 ft)
9 2,500 m or more, or no low or middle cloud
/ Height unknown due to sky obscured

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Low Cloud

WMO Code Table 0513, clouds of genera stratocumulus, stratus, cumulus and cumulonimbus.

Code
Figure
Weather
Symbol
Description
0 symbol for no low cloud No low level cloud
1 symbol for low cloud type 1 Small cumulus
2 symbol for low cloud type 2 Cumulus of moderate or strong vertical development
3 symbol for low cloud type 3 Cumulonimbus without anvil
4 symbol for low cloud type 4 Stratocumulus from spreading out of cumulus
5 symbol for low cloud type 5 Stratocumulus not from the spreading of cumulus
6 symbol for low cloud type 6 Stratus
7 symbol for low cloud type 7 Stratus fractus and cumulus fractus of bad weather
8 symbol for low cloud type 8 Cumulus and stratocumulus at different heights
9 symbol for low cloud type 9 Cumulonimbus with anvil
/ symbol for low cloud type / Low level cloud obscured for any reason

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Middle Cloud

WMO Code Table 0515, clouds of genera altocumulus, altostratus and nimbostratus.

Code
Figure
Weather
Symbol
Description
0 symbol for middle cloud type 0 No middle level cloud
1 symbol for middle cloud type 1 Thin altostratus
2 symbol for middle cloud type 2 Thick altostratus or nimbostratus
3 symbol for middle cloud type 3 Semitransparent altocumulus
4 symbol for middle cloud type 4 Altocumulus continually changing shape — lenticular altocumulus
5 symbol for middle cloud type 5 Altocumulus progressively invading the sky
6 symbol for middle cloud type 6 Altocumulus from the spreading out of cumulus
7 symbol for middle cloud type 7 Altocumulus at more than one level or thick altocumulus in a single layer
8 symbol for middle cloud type 8 Altocumulus with tufts or sproutings
9 symbol for middle cloud type 9 Altocumulus of a chaotic sky
/ symbol for middle cloud type / Middle level cloud obscured for any reason

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High Cloud

WMO Code Table 0509, clouds of genera cirrus, cirrocumulus and cirrostratus.

Code
Figure
Weather
Symbol
Description
0 symbol for high cloud type 0 No high level cloud
1 symbol for high cloud type 1 Cirrus in filaments or hooks not progressively invading the sky
2 symbol for high cloud type 2 Dense cirrus
3 symbol for high cloud type 3 Dense cirrus from cumulonimbus
4 symbol for high cloud type 4 Cirrus progressively invading the sky
5 symbol for high cloud type 5 Cirrostratus increasing but below 45° elevation
6 symbol for high cloud type 6 Cirrostratus increasing and above 45° elevation
7 symbol for high cloud type 7 Cirrostratus covering the whole sky
8 symbol for high cloud type 8 Cirrostratus neither progressively invading the sky nor entirely covering it
9 symbol for high cloud type 9 Cirrocumulus
/ symbol for high cloud type / High level cloud obscured for any reason

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Visibility

WMO Code Table 4377, horizontal visibility at surface.

Code
Figure
Description
00 < 0.1 km
01
...
50
0.1 to 5.0 km, in increments of 0.1 km
56
...
80
6 to 30 km, in increments of 1 km
81
...
88
35 to 70 km, in increments of 5 km
89 > 70 km

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Rainfall Period

WMO Code Table 4019, duration of period of reference for amount of precipitation, ending at the time of the report.

Code
Figure
Description
1 Total precipitation during the 6 hours preceding the observation
2 Total precipitation during the 12 hours preceding the observation
3 Total precipitation during the 18 hours preceding the observation
4 Total precipitation during the 24 hours preceding the observation
5 Total precipitation during the 1 hour preceding the observation
6 Total precipitation during the 2 hours preceding the observation
7 Total precipitation during the 3 hours preceding the observation
8 Total precipitation during the 9 hours preceding the observation
9 Total precipitation during the 15 hours preceding the observation

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Pressure Trend

WMO Code Table 0200, characteristic of pressure tendency during the three hours preceding the time of observation.

Code figures 0, 1, 3, 5, 6 and 8 are not used by an automatic weather station.

Code
Figure
Weather
Symbol
Description
0 symbol for pressure trend 0 Increasing then decreasing, atmospheric pressure the same or higher than three hours ago
1 symbol for pressure trend 1 Increasing then steady or increasing then increasing more slowly, atmospheric pressure now higher than three hours ago
2 symbol for pressure trend 2 Increasing steadily or unsteadily, atmospheric pressure now higher than three hours ago
3 symbol for pressure trend 3 Decreasing or steady then increasing or increasing then increasing more rapidly, atmospheric pressure now higher than three hours ago
4 symbol for pressure trend 4 Steady, atmospheric pressure the same as three hours ago
5 symbol for pressure trend 5 Decreasing then increasing, atmospheric pressure the same or lower than three hours ago
6 symbol for pressure trend 6 Decreasing then steady or decreasing then decreasing more slowly, atmospheric pressure now lower than three hours ago
7 symbol for pressure trend 7 Decreasing steadily or unsteadily, atmospheric pressure now lower than three hours ago
8 symbol for pressure trend 8 Steady or increasing then decreasing or decreasing then decreasing more rapidly, atmospheric pressure now lower than three hours ago

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Wind Direction

Wind direction is represented by a line extending from the station circle towards the true direction from which the wind is blowing.

Calm is represented by a circle surrounding the station circle.

Compass
Point
Weather
Symbol
Description Compass
Point
Weather
Symbol
Description
N symbol for wind from the N 349° - 11° S symbol for wind from the S 169° - 191°
NNE symbol for wind from the NNE 12° - 33° SSW symbol for wind from the SSW 192° - 213°
NE symbol for wind from the NE 34° - 56° SW symbol for wind from the SW 214° - 236°
ENE symbol for wind from the ENE 57° - 78° WSW symbol for wind from the WSW 237° - 258°
E symbol for wind from the E 79° - 101° W symbol for wind from the W 259° - 281°
ESE symbol for wind from the ESE 102° - 123° WNW symbol for wind from the WNW 282° - 303°
SE symbol for wind from the SE 124° - 146° NW symbol for wind from the NW 304° - 326°
SSE symbol for wind from the SSE 147° - 168° NNW symbol for wind from the NNW 327° - 348°

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Wind Speed

These symbols are affixed to the end of the wind direction indicator and point in the direction of lower pressure, i.e. to the right of the wind direction indicator in the Southern Hemisphere, and to the left in the Northern Hemisphere.

Knots Weather
Symbol
Knots Weather
Symbol
Knots Weather
Symbol
2 symbol for wind speed of 2 knots 25 symbol for wind speed of 25 knots 50 symbol for wind speed of 50 knots
5 symbol for wind speed of 5 knots 30 symbol for wind speed of 30 knots 55 symbol for wind speed of 55 knots
10 symbol for wind speed of 10 knots 35 symbol for wind speed of 35 knots 60 symbol for wind speed of 60 knots
15 symbol for wind speed of 15 knots 40 symbol for wind speed of 40 knots 65 symbol for wind speed of 60 knots
20 symbol for wind speed of 20 knots 45 symbol for wind speed of 45 knots 70 symbol for wind speed of 60 knots

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Past Weather

WMO Code Table 4561, past weather reported from a manned weather station.

Code
Figure
Weather
Symbol
Description
0 symbol for past weather type 0 Cloud covering 1/2 or less of the sky throughout the appropriate period
1 symbol for past weather type 1 Cloud covering more than 1/2 of the sky during part of the appropriate period and covering 1/2 or less during part of the period
2 symbol for past weather type 2 Cloud covering more than 1/2 of the sky throughout the appropriate period
3 symbol for past weather type 3 Sandstorm, duststorm or blowing snow
4 symbol for past weather type 4 Fog or ice fog or thick haze
5 symbol for past weather type 5 Drizzle
6 symbol for past weather type 6 Rain
7 symbol for past weather type 7 Snow, or rain and snow mixed
8 symbol for past weather type 8 Shower(s)
9 symbol for past weather type 9 Thunderstorm(s) with or without precipitation

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Present Weather

WMO Code Table 4677, present weather reported from a manned weather station.

Code
Figure
Weather
Symbol
Description
00 - 19 No precipitation, fog, ice-fog (except for 11 and 12), duststorm, sandstorm, drifting or blowing snow at the station at the time of observation or during the preceding hour (except 09 and 17)
00 symbol for present weather type 00 Cloud development not observed or not observable
01 symbol for present weather type 01 Clouds generally dissolving or becoming less developed
02 symbol for present weather type 02 State of sky on the whole unchanged
03 symbol for present weather type 03 Clouds generally forming or developing
04 symbol for present weather type 04 Visibility reduced by smoke, e.g. grassland or forest fires, industrial smoke or volcanic ashes
05 symbol for present weather type 05 Haze
06 symbol for present weather type 06 Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation
07 symbol for present weather type 07 Dust or sand raised by wind at or near the station at the time of observation, but no well developed dust whirl(s) or sand whirl(s), and no duststorm or sandstorm seen
08 symbol for present weather type 08 Well-developed dust whirl(s) or sand whirl(s) seen at or near the station during the preceding hour or at the time of observation, but no duststorm or sandstorm
09 symbol for present weather type 09 Duststorm or sandstorm within sight at the time of observation, or at the station during the preceding hour
10 symbol for present weather type 10 Mist
11 symbol for present weather type 11 Patches of shallow fog or ice fog at the station, not deeper than about 2 metres
12 symbol for present weather type 12 More or less continuous shallow fog or ice fog at the station, not deeper than about 2 metres
13 symbol for present weather type 13 Lightning visible, no thunder heard
14 symbol for present weather type 14 Precipitation within sight, not reaching the ground
15 symbol for present weather type 15 Precipitation within sight and reaching the ground, but estimated to be more than 5 km from the station
16 symbol for present weather type 16 Precipitation within sight and reaching the ground, near to, but not at the station
17 symbol for present weather type 17 Thunderstorm, but no precipitation at the time of observation
18 symbol for present weather type 18 Squalls at or within sight of the station during the preceding hour or at the time of observation
19 symbol for present weather type 19 Funnel cloud(s) at or within sight of the station during the preceding hour or at the time of observation
20 - 29 Precipitation, fog, ice-fog or thunderstorm at the station during the preceding hour but not at the time of observation
20 symbol for present weather type 20 Drizzle (not freezing) or snow grains during the preceding hour but not at the time of observation
21 symbol for present weather type 21 Rain (not freezing) during the preceding hour but not at the time of observation
22 symbol for present weather type 22 Snow during the preceding hour but not at the time of observation
23 symbol for present weather type 23 Rain and snow or ice pellets during the preceding hour but not at the time of observation
24 symbol for present weather type 24 Freezing drizzle or freezing rain during the preceding hour but not at the time of observation
25 symbol for present weather type 25 Shower(s) of rain during the preceding hour but not at the time of observation
26 symbol for present weather type 26 Shower(s) of snow, or of rain and snow during the preceding hour but not at the time of observation
27 symbol for present weather type 27 Shower(s) of hail or of rain and hail during the preceding hour but not at the time of observation
28 symbol for present weather type 28 Fog or ice fog during the preceding hour but not at the time of observation
29 symbol for present weather type 29 Thunderstorm (with or without precipitation) during the preceding hour but not at the time of observation
30 - 39 Duststorm, sandstorm, drifting or blowing snow
30 symbol for present weather type 30 Slight or moderate duststorm or sandstorm - has decreased during the preceding hour
31 symbol for present weather type 31 Slight or moderate duststorm or sandstorm – no appreciable change during the preceding hour
32 symbol for present weather type 32 Slight or moderate duststorm or sandstorm - has begun or has increased during the preceding hour
33 symbol for present weather type 33 Severe duststorm or sandstorm - has decreased during the preceding hour
34 symbol for present weather type 34 Severe duststorm or sandstorm – no appreciable change during the preceding hour
35 symbol for present weather type 35 Severe duststorm or sandstorm - has begun or has increased during the preceding hour
36 symbol for present weather type 36 Slight or moderate drifting snow, generally below eye level
37 symbol for present weather type 37 Heavy drifting snow, generally below eye level
38 symbol for present weather type 38 Slight or moderate blowing snow, generally above eye level
39 symbol for present weather type 39 Heavy blowing snow, generally above eye level
40 - 49 Fog or ice-fog at the time of observation
40 symbol for present weather type 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 symbol for present weather type 41 Fog or ice fog in patches
42 symbol for present weather type 42 Fog or ice fog, sky visible, has become thinner during the preceding hour
43 symbol for present weather type 43 Fog or ice fog, sky invisible, has become thinner during the preceding hour
44 symbol for present weather type 44 Fog of ice fog, sky visible, no appreciable change during the preceding hour
45 symbol for present weather type 45 Fog or ice fog, sky invisible, no appreciable change during the preceding hour
46 symbol for present weather type 46 Fog or ice fog, sky visible, has begun or has become thicker during the preceding hour
47 symbol for present weather type 47 Fog or ice fog, sky invisible, has begun or has become thicker during the preceding hour
48 symbol for present weather type 48 Fog, depositing rime, sky visible
49 symbol for present weather type 49 Fog, depositing rime, sky invisible
50 - 59 Drizzle at the station at the time of observation
50 symbol for present weather type 50 Slight intermittent drizzle (not freezing) at the time of observation
51 symbol for present weather type 51 Slight continuous drizzle (not freezing) at the time of observation
52 symbol for present weather type 52 Moderate intermittent drizzle (not freezing) at the time of observation
53 symbol for present weather type 53 Moderate continuous drizzle (not freezing) at the time of observation
54 symbol for present weather type 54 Heavy intermittent drizzle (not freezing) at the time of observation
55 symbol for present weather type 55 Heavy continuous drizzle (not freezing) at the time of observation
56 symbol for present weather type 56 Slight drizzle (freezing) at the time of observation
57 symbol for present weather type 57 Moderate or heavy drizzle (freezing) at the time of observation
58 symbol for present weather type 58 Slight drizzle and rain at the time of observation
59 symbol for present weather type 59 Moderate or heavy drizzle at the time of observation
60 - 69 Rain at the station at the time of observation
60 symbol for present weather type 60 Slight intermittent rain (not freezing) at the time of observation
61 symbol for present weather type 61 Slight continuous rain (not freezing) at the time of observation
62 symbol for present weather type 62 Moderate intermittent rain (not freezing) at the time of observation
63 symbol for present weather type 63 Moderate continuous rain (not freezing) at the time of observation
64 symbol for present weather type 64 Heavy intermittent rain (not freezing) at the time of observation
65 symbol for present weather type 65 Heavy continuous rain (not freezing) at the time of observation
66 symbol for present weather type 66 Slight rain (freezing)
67 symbol for present weather type 67 Moderate or heavy rain (freezing)
68 symbol for present weather type 68 Slight rain or drizzle and snow
69 symbol for present weather type 69 Moderate or heavy rain or drizzle and snow
70 - 79 Solid precipitation not in showers at the station at the time of observation
70 symbol for present weather type 70 Slight intermittent fall of snowflakes at the time of observation
71 symbol for present weather type 71 Slight continuous fall of snowflakes at the time of observation
72 symbol for present weather type 72 Moderate intermittent fall of snowflakes at the time of observation
73 symbol for present weather type 73 Moderate continuous fall of snowflakes at the time of observation
74 symbol for present weather type 74 Heavy intermittent fall of snowflakes at the time of observation
75 symbol for present weather type 75 Heavy continuous fall of snowflakes at the time of observation
76 symbol for present weather type 76 Diamond dust (with or without fog)
77 symbol for present weather type 77 Snow grains (with or without fog)
78 symbol for present weather type 78 Isolated star-like snow crystals (with or without fog)
79 symbol for present weather type 79 Ice pellets
80 - 99 Showery precipitation, or precipitation with current or recent thunderstorm at the station at the time of observation
80 symbol for present weather type 80 Slight rain shower(s)
81 symbol for present weather type 81 Moderate or heavy rain shower(s)
82 symbol for present weather type 82 Violent rain shower(s)
83 symbol for present weather type 83 Slight shower(s) of rain and snow mixed
84 symbol for present weather type 84 Moderate or heavy shower(s) of rain and snow mixed
85 symbol for present weather type 85 Slight snow shower(s)
86 symbol for present weather type 86 Moderate or heavy snow shower(s)
87 symbol for present weather type 87 Slight shower(s) of snow pellets or small hail, with or without rain or rain and snow mixed
88 symbol for present weather type 88 Moderate or heavy shower(s) of snow pellets or small hail, with or without rain or rain and snow mixed
89 symbol for present weather type 89 Slight shower(s) of hail with or without rain or rain and snow mixed, not associated with thunder
90 symbol for present weather type 90 Moderate or heavy shower(s) of hail with or without rain or rain and snow mixed, not associated with thunder
91 symbol for present weather type 91 Slight rain at the time of observation, thunderstorm during the preceding hour but not at the time of observation
92 symbol for present weather type 92 Moderate or heavy rain at the time of observation, thunderstorm during the preceding hour but not at the time of observation
93 symbol for present weather type 93 Slight snow, or rain and snow mixed or hail at the time of observation, thunderstorm during the preceding hour but not at the time of observation
94 symbol for present weather type 94 Moderate or heavy snow, or rain and snow mixed or hail at the time of observation, thunderstorm during the preceding hour but not at the time of observation
95 symbol for present weather type 95 Slight or moderate thunderstorm without hail, but with rain and/or snow at the time of observation
96 symbol for present weather type 96 Slight or moderate thunderstorm with hail at the time of observation
97 symbol for present weather type 97 Heavy thunderstorm without hail, but with rain and/or snow at the time of observation
98 symbol for present weather type 98 Thunderstorm combined with duststorm or sandstorm at the time of observation
99 symbol for present weather type 99 Heavy thunderstorm with hail at the time of observation

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