METAR and TAF Decode Key

Every METAR code and abbreviation / METAR Decoder Key

Below is a comprehensive list of every abbreviation used in METAR reports.

Abbreviation Description
$ maintenance check indicator
- light intensity
+ heavy intensity
/ indicator that visual range data follows; separator between temperature and dew point data.
ACC altocumulus castellanus
ACFT MSHP aircraft mishap
ACSL altocumulus standing lenticular cloud
AO1 automated station without precipitation discriminator
AO2 automated station with precipitation discriminator
ALP airport location point
APCH approach
APRNT apparent
APRX approximately
ATCT airport traffic control tower
AUTO fully automated report
B began
BC patches
BKN broken
BL blowing
BR mist
C center (with reference to runway designation)
CA cloud-air lightning
CB cumulonimbus cloud
CBMAM cumulonimbus mammatus cloud
CC cloud-cloud lightning
CCSL cirrocumulus standing lenticular cloud
cd candela
CG cloud-ground lightning
CHI cloud-height indicator
CHINO sky condition at secondary location not available
CIG ceiling
CLR clear
CONS continuous
COR correction to a previously disseminated observation
DOC Department of Commerce
DOD Department of Defense
DOT Department of Transportation
DR low drifting
DS duststorm
DSIPTG dissipating
DSNT distant
DU widespread dust
DVR dispatch visual range
DZ drizzle
E east, ended, estimated ceiling (SAO)
FAA Federal Aviation Administration
FC funnel cloud
FEW few clouds
FG fog
FIBI filed but impracticable to transmit
FIRST first observation after a break in coverage at manual station
FMH-1 Federal Meteorological Handbook No.1, Surface Weather Observations & Reports (METAR)
FMH2 Federal Meteorological Handbook No.2, Surface Synoptic Codes
FRQ frequent
FROPA frontal passage
FT feet
FU smoke
FZ freezing
FZRANO freezing rain sensor not available
G gust
GR hail
GS small hail and/or snow pellets
HLSTO HLSTO hailstone
HZ haze
IC ice crystals, in-cloud lightning
ICAO International Civil Aviation Organization
INCRG increasing
INTMT intermittent
KT KNOTS
L left (with reference to runway designation)
LAST last observation before a break in coverage at a manual station
LST Local Standard Time
LTG lightning
LWR lower
M minus, less than
max maximum
METAR routine weather report provided at fixed intervals
MI shallow
min minimum
MOV moved/moving/movement
MT mountains
N north
N/A not applicable
NCDC National Climatic Data Center
NE northeast
NOS National Ocean Survey
NOSPECI no SPECI reports are taken at the station
NOTAM Notice to Airmen
NW northwest
NWS National Weather Service
OCNL occasional
OFCM Office of the Federal Coordinator for Meteorology
OHD overhead
OVC overcast
OVR over
P indicates greater than the highest reportable value
PCPN precipitation
PL ice pellets
PK WND peak wind
PNO precipitation amount not available
PO dust/sand whirls (dust devils)
PRES pressure
PR partial
PRESFR pressure falling rapidly
PRESRR pressure rising rapidly
PWINO precipitation identifier sensor not available
PY spray
R right (with reference to runway designation), runway
RA rain
RTD Routine Delayed (late) observation
RV reportable value
RVR Runway Visual Range
RVRNO RVR system values not available
RY runway
S snow, south
SA sand
SCSL stratocumulus standing lenticular cloud
SCT scattered
SE southeast
SFC surface
SG snow grains
SH shower(s)
SKC sky clear
SLP sea-level pressure
SLPNO sea-level pressure not available
SM statute miles
SN snow
SNINCR snow increasing rapidly
SP snow pellets
SPECI an unscheduled report taken when certain criteria have been met
SQ squalls
SS sandstorm
STN station
SW snow shower, southwest
TCU towering cumulus
TS thunderstorm
TSNO thunderstorm information not available
TWR tower
UNKN unknown
UP unknown precipitation
UTC Coordinated Universal Time
V variable
VA volcanic ash
VC in the vicinity
VIS visibility
VISNO visibility at secondary location not available
VR visual range
VRB variable
VV vertical visibility
W west
WG/SO Working Group for Surface Observations
WMO World Meteorological Organization
WND wind
WSHFT wind shift
Z zulu, i.e., Coordinated Universal Time

source: https://www.weather.gov/media/wrh/mesowest/metardecodekey.pdf