COR
Corrected (report like METAR)
METAR
Aviation routine weather report
G
Gust
V
Variable
Ex. 21010KT 180V240 (wind variable from 180 to 240)
RVR
Runway visual range
VC
In the Vicinity (beyond the point of observation, between 5 and 10 SM)
MI
Shallow
PR
Partial
BC
Patches
DR
Low Drifting
BL
Blowing
SH
Shower(s)
TS
Thunderstorms
FZ
Freezing
DZ
Drizzle
RA
Rain
SN
Snow
SG
Snow Grains
IC
Ice Crystals (Diamond Dust)
PL
Ice Pellets
GR
Hail
GS
Small Hail
UP
Unknown Precipitation
BR
Mist