28024G36KT wind two eight zero at two four gusts three six
3/4SM visibility three fourths
+TSRA . thunderstorms, heavy rain
BKN008
ceiling eight hundred broken
OVC020CB . two thousand overcast cumulonimbus clouds
28/23 . temperature two eight, dew point two three
A3000 altimeter three zero zero zero
RMK remarks
TSRAB24 . thunderstorm and rain began at two four
TS W MOV E thunderstorm west moving east
c. Aerodrome Forecast (TAF). A concise statement of the expected meteorological conditions at an airport
during a specified period. At most locations, TAFs have a 24 hour forecast period. However, TAFs for some
locations have a 30 hour forecast period. These forecast periods may be shorter in the case of an amended TAF.
TAFs use the same codes as METAR weather reports. They are scheduled four times daily for 24-hour periods
beginning at 0000Z, 0600Z, 1200Z, and 1800Z.
Forecast times in the TAF are depicted in two ways. The first is a 6-digit number to indicate a specific point in
time, consisting of a two-digit date, two-digit hour, and two-digit minute (such as issuance time or FM). The
second is a pair of four-digit numbers separated by a "/" to indicate a beginning and end for a period of time.
In this case, each four-digit pair consists of a two-digit date and a two-digit hour.
TAFs are issued in the following format:
TYPE OF REPORT/ICAO STATION IDENTIFIER/DATE AND TIME OF ORIGIN/VALID PERIOD DATE
AND TIME/FORECAST METEOROLOGICAL CONDITIONS
NOTE-
The "/" above and in the following descriptions are for separation purposes in this publication and do not appear in the
actual TAFs.

TAF KORD 051130Z 0512/0618 14008KT 5SM BR BKN030
TEMPO 0513/0516 1 1/2SM BR
FM051600 16010KT P6SM SKC
FM052300 20013G20KT 4SM SHRA OVC020
PROB40 0600/0606 2SM TSRA OVC008CB
BECMG 0606/0608 21015KT P6SM NSW SCT040
TAF format observed in the above example:
TAF = type of report
KORD = ICAO station identifier
051130Z = date and time of origin (issuance time)
0512/0618 = valid period date and times
14008KT 5SM BR BKN030 = forecast meteorological conditions
Explanation of TAF elements:
1. Type of Report. There are two types of TAF issuances, a routine forecast issuance (TAF) and an
amended forecast (TAF AMD). An amended TAF is issued when the current TAF no longer adequately describes
the on-going weather or the forecaster feels the TAF is not representative of the current or expected weather.
Corrected (COR) or delayed (RTD) TAFs are identified only in the communications header which precedes the
actual forecasts.
2. ICAO Station Identifier. The TAF code uses ICAO 4-letter location identifiers as described in the
METAR section.

Meteorology

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