IRFP-01
Metro Review
VC
Vicinity
AO1
Automated Observation without
VRB
Variable wind direction
precipitation discriminator (rain/snow)
when speed is less than or
AO2
Automated Observation with
equal to 6 kts
precipitation discriminator (rain/snow)
VV
Vertical Visibility (Indefinite
AMD
Amended Forecast (TAF)
Ceiling)
BECMG
Becoming (expected between 2-digit
WS
Wind shear (In TAFs, low-
beginning hour and 2-digit ending hour
level and not associated
BKN
Broken 5-7 octas (eighths) cloud
with convective activity)
coverage
CLR
Clear at or below 12,000 ft (ASOS/
DESCRIPTORS
AWOS report)
BC
Patches
COR
Correction to the observation
BL
Blowing
FEW
>0-2 octas (eighths) cloud coverage
DR
Low Drifting
FM
From (4-digit beginning time in hours
FZ
Supercooled/freezing
and minutes)
MI
Shallow
LDG
Landing
PR
Partial
M
In temperature field, means "minus" or
SH
Showers
below zero
TS
Thunderstorm
M
In RVR listing, indicates visibility less
than lowest reportable sensor value
WEATHER
PHENOMENA
(e.g., M0600)
BR
Mist
NO
Not available (e.g., SLPNO, RVRNO)
DS
Dust Storm
NSW
No Significant Weather
DU
Widespread Dust
NOTE: NSW only indicates obstruction to visibility
DZ
Drizzle
or precipitation previously noted has
FC
Funnel Cloud
ended. Low ceilings, wind shear, and
+FC
Tornado/Water Spout
other weather conditions may still
FG
Fog
exist.
FU
Smoke
OVC
Overcast 8 octas (eighths) cloud
GR
Hail
coverage
GS
Small Hail/Snow Pellets
P
In RVR, indicates visibility greater than
HZ
Haze
highest reportable sensor value (e.g.,
IC
Ice Crystals
P6000FT)
PE
Ice Pellets
P6SM
Visibility greater than 6 SM (TAF only)
PO
Dust/Sand Whirls
PK WND
Peak wind
PY
Spray
PROB40
Probability 40 percent
RA
Rain
R
Runway (used in RVR measurement)
SA
Sand
RMK
Remark
SG
Snow Grains
RY/RWY
Runway
SN
Snow
SCT
Scattered 3-4 octas (eighths) cloud
SQ
Squall
coverage
SS
Sandstorm
SKC
Sky Clear
UP
Unknown Precipitation
SLP
Sea Level Pressure (e.g., 1001.3
(Automated Observations)
reported as 013)
VA
Volcanic Ash
SM
Statute mile(s)
SPECI
Special Report
CLOUD TYPES
TEMPO
Temporary changes expected
CB
(between 2-digit beginning hour and 2-
TCU
Towering Cumulus
digit ending hour)
TKOF
Takeoff
INTENSITY
VALUES
T01760158, 10142, 20012 and 401120084 In
-
Light
Remarks -- examples of temperature
no sign
Moderate
information
+
Heavy
V
Varies (wind direction and RVR)
Figure 26: METAR ABBREVIATIONS
(8-97) Original
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