KEY to AERODROME FORECAST (TAF) and
AVIATION ROUTINE WEATHER REPORT
(METAR)
TAF KPIT 091730Z 091818 15005KT 5SM HZ FEW020 WS010/31022KT
FM1930 30015G25KT 3SM SHRA OVC015 TEMPO 2022 1/2SM +TSRA
OVC008CB
FM0100 27008KT 5SM SHRA BKN020 0VC040 PROB40 0407 1SM -RA BR
FM1015 18005KT 6SM -SHRA OVC020 BECMG 1315 P6SM NSW SKC
METAR KPIT 091955Z COR 22015G25KT 3/4SM R28L/2600FT TSRA OVC010CB
18/16 A2992 RMK SLP045 T01820159
|
Forecast |
Explanation |
Report |
TAF
|
Message type: TAF-routine or TAF
AMD-amended forecast, METAR-hourly,
SPECI-special or TESTM-non-commissioned
ASOS report
|
METAR
|
KPIT
|
ICAO location indicator
|
KPIT
|
091730Z
|
Issuance time: ALL times in UTC "Z",
2-digit date, 4-digit time
|
091955Z
|
091818
|
Valid period: 2-digit date,
2-digit beginning,
2-digit ending times
|
|
|
In U.S. METAR: CORrected ob; or
AUTOmated ob for automated
report with no human intervention;
omitted when observer logs on
|
COR
|
15005KT
|
Wind: 3 digit true-north direction,
nearest 10 degrees (or VaRiaBle);
next 2-3 digits for speed and unit,
KT (KMH or MPS); as needed,
Gust and maximum speed; 00000KT for calm;
for METAR, if direction varies
60 degrees or more, Variability appended,
e.g. 180V260
|
22015G25KT
|
5SM
|
Prevailing visibility: in U.S., Statute
Miles & fractions; above 6 miles in TAF
Plus6SM. (Or, 4-digit minimum visibility
in meters and as required, lowest value
with direction)
|
3/4SM
|
|
Runway Visual Range: R; 2-digit runway designator
Left, Center, or Right as needed;
"/"; Minus or Plus in U.S,
4-digit value, FeeT in U.S.
(usually meters elsewhere);
4-digit value Varialbility 4-digit value
(and tendency Down, Up or No change)
|
R28L/2600FT
|
HZ
|
Significant present, forecast and
recent weather: see table
(below)
|
TSRA
|
FEW020
|
Cloud amount, height and type: SKy
Clear 0/8, FEW >0/8-2/8,
SCaTtered 3/8-4/8, BroKeN 5/8-7/8,
OVerCast 8/8; 3-digit height in hundreds of ft;
Towering CUmulus or CumulonimBus in
METAR; in TAF, only CB.
Vertical Visibility for obscured sky and
height "VV004". More than 1 layer may be reported
or forecast. In automated METAR reports only, CLeaR
for "clear below 12,000 feet"
|
OVC010CB
|
|
Temperature: degrees Celsius; first 2 digits,
temperature "/" last 2 digits, dew-point temperature;
Minus for below zero, e.g., M06
|
18/16
|
|
Altimeter setting: indicator and 4 digits; in U.S.,
A-inches and hundredths; (Q-hectoPascals, e.g. Q1013)
|
A2992
|
WS010/31022KT
|
In U.S. TAF, non-convective low-level
(<=2,000 ft)Wind Shear; 3-digit height (hundreds of ft);
"/", 3-digit wind direction and 2-3 digit wind speed
above the indicated height, and unit, KT
|
|
|
In METAR, ReMarK indicator
& remarks. For example:Sea-Level Pressure in
hectoPascals & tenths, as shown: 1004.5 hPa;
Temp/dew-point in tenths °C, as shown:
temp 18.2°C, dew-point 15.9°C
|
RMK
SLP045
T01820159
|
FM1930
|
FroM and 2-digit hour and 2-digit
minute beginning time: indicates significant change.
Each FM starts on a new line, indented 5 spaces.
|
|
TEMPO 2022
|
TEMPOrary: changes expected for < 1 hour and in
total, < half of 2-digit hour beginning and
2-digit hour ending time period
|
|
PROB40 0407
|
PROBability and 2-digit percent (30 or 40): probable
condition during 2-digit hour beginning and
2-digit hour ending time period
|
|
BECMG 1315
|
BECoMinG: change expected during 2-digit
hour beginning and 2-digit hour ending
time period
|
|