MISC
MODIFIER
WEATHER OR OBSCURATION
SIGNIFICANT
Intensity
Character
Obscuration
PHENOMENA
Funnel cloud
Light (-)
Thunderstorm
Rain (RA)
Mist (fog
(FC) tornado
(TS)
reducing VIS <
water spout
7,=> 5/8 mi (BR)
Moderate (No
Showers (SH)
Drizzle (DZ)
symbol)
Squalls (SQ)
Heavy (+)
Blowing (BL)
Freezing rain
Fog (FG)
(FRRA)
In the vicinity
Low drifting
Freezing drizzle
Haze (HZ)
(VC)
(DR)
(FZDZ)
Shallow (MI)
Snow (SN)
Smoke (FU)
Partial (PR)
Ice pellets (PL)
Widespread dust
(DU)
Patches (BC)
Snow grains
Sand (SA)
(SG)
Ice crystals (IC)
Spray (PY)
Small hail or
Volcanic ash
snow pellets
(VA)
(GS)
Hail (GR)
Dust storm (DS)
Unknown
Sand storm (SS)
precipitation
Dust or sand
(UP)
whirls (PO)
Notes:
1. The weather phenomena groups encoded shall be constructed by considering
columns 1 through 5 above in sequence. (i.e., misc. phenomena, intensity, descriptor,
precipitation, and obscuration. (Examples: +FC TSRA, TSSN, FZDZ BR).
2. Tornadoes and waterspouts shall always be entered as +FC.
3. UP is only used by ASOS.
Table 1-16 -- Present weather precedence
1-36