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2 – me t eorology
commencement of the TAF validity period. These forecasts are point
forecasts for these times but are valid for:
• in the case of the first value, ninetyminutes after the timepoint HH; and,
• for subsequent values, ninetyminutes each side of the timepoint.
TheQNH forecasts are prefixedby the letter Q.
Supplementary Information
InMETAR/SPECI, supplementary information is used to report the following:
• recentweather (RE) of operational significance; and
• wind shear (WS) information on a take–off or landing runway.
RemarksSection
Rainfall
The remarks section of the reportwill include rainfall recordedby an
automatic rain gauge. The information is in the formRF##.#/###.#where the
first three digits after the indicator RFwill report the rainfall recorded in the
10minutes prior to the observation time, and the next four digits report the
total rainfall recorded since 0900 local time. Both amounts are expressed in
millimetres to the nearest 0.2mm.
Plain Language
Any other significantweather conditions (e.g. an approaching front or visible
bushfires) are appended as plain language.
ElementsNot Available
A report from a fully automatedAWS that does not include information from
sensors for visibility, weather, or cloudwill report ////, // or ////// respectively in
lieu of these parameters.
AerodromeForecast (TAF)Examples
TAFYCOM 070635Z 0708/0720 18015KT 9999FEW005BKN020
TEMPO0710/0714 2000 -SHSNBKN005SCT020
RMK T 03 00M02M04Q 1008 10071006 1006
TAFYSSY 020435Z 0206/0312 31005KTCAVOK
FM02140016015KT 8000SHRABKN008SCT030
aerodrome forecasts and reports