METAR CODES

Codes

P

indicates that RVR exceeds the highest reportable sensor value. EX R04R/4000VP6000FT

M

indicates the RVR is below the lowest reportable sensor value (the opposite of P, which flags a value above the highest reportable sensor value).

Example: R04R/M0600FT

V

indicates variable RVR values Example R09R/4000V5000FT

A2987

29.87 inches of mercury or 29.92 inHg

(+ and -)

intensity symbols associated with precipitation. EX +TSRA = thunderstorm with heavy rain. -SHRA = Light rain shower

TS

Thunderstorm

RA

Rain

BKN

Broken Clouds

CB

cumulonimbus

MI

Shallow (FOG)

DR

Low Drifting. When dust, sand, or snow raised by wind

BL

Blowing. Used when dust, sand, snow and spray is raised by wind

TS

Thunderstorm

BC

Patches. Describe fog that has little vertical extent and reduce horizontal vis

FZ

Freezing

SH

Showers

PR

Partial

DZ

Drizzle

SN

Snow

IC

Ice crystals, visibility reduced by ice crystals

GR

Hail

RA

Rain

SG

Snow Grains

PL

Ice Pellets

GS

Smail hail/snow pellets less than ¼ inch in diameter

UP

Unknown Precipitation

BR

Mist

FU

Smoke

SA

Sand

PY

Spray

FG

Fog

VA

Volcanic Ash

HZ

Haze

DU

Dust

SS

Sandstorm

SQ

Squall

DS

Dust Storm

FC

Funnel Cloud

+FC

Tornado/Water Spout

PO

Well Developed Dust/Sand Whirls

Squall

sudden increase in wind speed of at least 16 kts, with speeds rising to 22 kts or more and lasting at least one minute

TAF

Terminal Aerodrome Forecast within 5 mile radius of station

VC

Vicinity 5 to 10 statue miles from station

DSNT

Distant beyond 10 statue miles from station

SKC or CLR

Clear (0 or 0) not ceiling

FEW

Few (>0 to 2/8) not ceiling

SCT

Scattered (3/8 to 4/8) not ceiling

BKN

Broken (5/8 to 7/8) Ceiling

OVC

Overcast (8/8)

VV

Vertical Visibility (8/8) Ceiling

CB

Cumulonimbus (when present) Ceiling, Base Layer

TCU

Towering Cumulus (when present) Ceiling, Base Layer

RMK

remark may or may not include any significance to flight crew

OCNL

occasional lightning

FRQ

Frequent Lightning

CONS

Continuous Lightning

CG

Cloud to Ground lightning

IC

in Cloud lightning

CC

Cloud to Cloud lightning

CA

Cloud to Air Lightning

CBMAM

cumulonimbus mammatus cloud

ACSL

altocumulus standing lenticular clouds

PWINO

present weather identifier not available

PNO

Precipitation amount not available

FZRANO

Freezing rain information indicator not available

TSNO

Lighting information not available

VISNO

visibility sensor info not available

CHINO

Cloud height indicator info not available

SPECI

special or non-routine aviation weather report has been recorded. will be issued for tornado/waterspout, funnel cloud, thunderstorm ends or begins, hail, freezing precipitation, ice pellets, volcanic eruption, squall

ASOS

Automated surface observing System

A01

Automated station without a precipitation discriminator

A02

Automated station with a precipitation discriminator.

TAF 9999

visibility greather than 10 kilometers

TAF NSM

No significant weather