Weather Abbreviations
AT
At
AUTO
Automated report
BC
Patches
BECMG
Becoming
BKN
Broken clouds (5-7 OKTAS)
BL
Blowing
BLW
Below
BR
Mist
BTN
Between
CAT
Clear air turbulence
CAVOK
Ceiling and vis okay
CB
Cumulonimbus
CC
Cirrocumulus
CI
Cirrus
CLD
Cloud
CLR
Clear
COR
Correction
COT
At the coast
CS
Cirrostratus
CU
Cumulus
DEG
Degrees
DP
Dew point
DR
Drifting
DS
Dust storm
DU
Widespread dust
DZ
Drizzle
EMBD
Embedded
FEW
Few clouds (1-2 Oktas)
FC
Funnel cloud
FG
Fog
FM
From
FPM
Feet per minute
FRQ
Frequent
FU
Smoke
FZ
Freezing
G
Gust
GEN
Generally
GND
Ground
GR
Hail
GS
Small hail / snow pellets
H
High pressure centre
HPA
Hectopascals
HZ
Haze
IC
Ice crystals
INTSF
Intensifying
ISOL
Isolated
JTST
Jet stream
KM
Kilometers
KT
Knots
L
Low pressure centre
LAN
Inland (or over land)
LCA
Locally
LSQ
Line squall
LTG
Lightning
LV
Light and variable
LYR
Layered
M temp
Minus (less than 0C)
MI
Shallow (for example mist or fog)
MNM
Minimum
MOD
Moderate
MON
Above or covering mountains
MPS
Meters per second
MS
Minus
MSL
Mean sea level
MTW
Mountain wave
NAT
North Atlantic
NC
No change
NCD
No cloud detected
NDV
No directional variation
NIL
None
NOSIG
No significant change
NS
Nimbostratus
NSC
No significant cloud
NSW
No significant weather
OCNL
Occasional
OVC
Overcast (8 Oktas)
PL
Ice pellets
PO
Dust devils
PRFG
Fog banks
PROB
Probability
PS
Plus
PSYS
Pressure system
PY
Spray
RA
Rain
RMK
Remarks
RVR
Runway visual range
RWY
Runway
SA
Sand
SC
Stratocumulus
SCT
Scattered (3-4 Oktas)
SEA
At sea
SEV
Severe
SFC
Surface
SG
Snow grains
SH
Showers
SIG
Significant
SKC
Sky clear
SN
Snow
SP
Snow pellets
SPECI
Special report
SQ
Squals
SS
Sandstorm
ST
Stratus
STNR
Stationary
T
Temperature
TCU
Towering cumulus
TEMPO
Temporary
TL
Until
TOP
Cloud top
TROP
Tropopause
TS
Thunderstorm
TURB
Turbulence
U
Upward (tendency in RVR)
UP
Unidentified precip (auto reports only)
VA
Volcanic ash
VAL
In valleys
VC
In the vicinity (of the aerodrome)
VIS
Visibility
VRB
Variable
VSP
Vertical speed
VV
Vertical visibility
WDSPR
Widespread
WRNG
Warning
WS
Windshear
WSPD
Wind speed
WX
Weather
Z
Zulu Time (UTC)