Author Topic: WMO Meteorological codes  (Read 730 times)

Randi

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WMO Meteorological codes
« on: August 04, 2016, 12:48:33 pm »
http://badc.nerc.ac.uk/data/surface/code.html

WMO code 4677: Present weather reported from a manned station.    

00 - Cloud development not observed or not observable                       
01 - Cloud generally dissolving or becoming less developed                   
02 - State of sky on the whole unchanged                                     
03 - Clouds generally forming or developing                                 
04 - Visibility reduced by smoke, e.g. veldt or forest fires, industrial smoke or
     volcanic ashes                                     
05 - Haze                                                                   
06 - Widespread dust in suspension in the air, not raised by wind at or near the
     station at the time of observation                         
07 - Dust or sand raised by wind at or near the station at the time of
     observation, but not well-developed dust whirl(s) or sand whirl(s),
     and no duststorm or sandstorm seen; or, in the case of ships, blowing
     spray at the station                                     
08 - Well-developed dust or sand whirl(s) seen at or near the station during the
     preceding hour or at the time of observation, but no dust storm or sandstorm
09 - Duststorm or sandstorm within sight at the time of observation, or at the
     station during the preceding hour                             
10 - Mist                                                                   
11 - Patches of shallow fog or ice fog at the station, whether on land or sea not
     deeper than about 2 metres on land or 10 metres at sea       
12 - More or less continuous shallow fog or ice fog at the station, whether on
     land or sea, not deeper than about 2m/land or 10m/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. > 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 clouds 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 showers, during the
     preceding hour but not at the time of observation           
21 - Rain (not freezing), not falling as showers, during the preceding hour but
     not at the time of observation                                 
22 - Snow, not falling as showers, during the preceding hour but not at the
     time of observation                                             
23 - Rain and snow or ice pellets, not falling as showers; during the preceding
     hour but not at the time of observation                       
24 - Freezing drizzle or freezing rain; 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 hour                                                     
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 increased
     during the preceding hour                                     
33 - Severe duststorm or sandstorm - has decreased during the preceding hour
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/moderate drifting snow - generally low (below eye level)         
37 - Heavy drifting snow - generally low (below eye level)                   
38 - Slight/moderate blowing snow - generally high (above eye level)         
39 - Heavy blowing snow - generally high (above eye level)                   
40 - Fog or ice fog at a a distance at the time of observation, but not at
     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/ice fog, sky visible, has become thinner during the preceding hour
43 - Fog/ice fog, sky invisible, has become thinner during the preceding hour
44 - Fog or ice fog, sky visible, no appreciable change during the past 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
     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 ob.             
51 - Drizzle, not freezing, continuous, slight at time of ob.               
52 - Drizzle, not freezing, intermittent, moderate at time of ob.           
53 - Drizzle, not freezing, continuous, moderate at time of ob.             
54 - Drizzle, not freezing, intermittent, heavy at time of ob.               
55 - Drizzle, not freezing, continuous, heavy at time of ob.                 
56 - Drizzle, freezing, slight                                               
57 - Drizzle, freezing, moderate or heavy (dense)                           
58 - Rain and drizzle, slight                                               
59 - Rain and drizzle, moderate or heavy                                     
60 - Rain, not freezing, intermittent, slight at time of ob.                 
61 - Rain, not freezing, continuous, slight at time of ob.                   
62 - Rain, not freezing, intermittent, moderate at time of ob.               
63 - Rain, not freezing, continuous, moderate at time of ob.                 
64 - Rain, not freezing, intermittent, heavy at time of ob.                 
65 - Rain, not freezing, continuous, heavy at time of ob.                   
66 - Rain, freezing, slight                                                 
67 - Rain, freezing, moderate or heavy                                       
68 - Rain or drizzle and snow, slight                                       
69 - Rain or drizzle and snow, moderate or heavy                             
70 - Intermittent fall of snowflakes, slight at time of ob.                 
71 - Continuous fall of snowflakes, slight at time of ob.                   
72 - Intermittent fall of snowflakes, moderate at time of ob.               
73 - Continuous fall of snowflakes, moderate at time of ob.                 
74 - Intermittent fall of snowflakes, heavy at time of ob.                   
75 - Continuous fall of snowflakes, heavy at time of ob.                     
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, slight                                     
84 - Shower(s) of rain and snow, 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 the 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 ob.             
97 - Thunderstorm, heavy, without hail, but with rain and/or snow at time of
     observation                                                     
98 - Thunderstorm combined with dust/sandstorm at time of observation       
99 - Thunderstorm, heavy with hail at time of observation