source: lmdz_wrf/trunk/tools/wmo_4677.code @ 2294

reference|http://artefacts.ceda.ac.uk/badc_datadocs/surface/code.html
short_description|Present weather
wmo_code|4677
long_description|Present weather reported from a manned station.
codeTYPE|S
@| Values
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