METARMAP

TAF decoder

Enter an ICAO identifier and get the airfield's current TAF, decoded and sorted into periods, each with its GAFOR category.

Hover over a group or tap it.

EDDPAirfield

The airfield's four-letter ICAO code. EDDP, for example, is Leipzig/Halle.

Valid from day 29, 18:00 UTC to day 30, 24:00 UTC · issued day 29, 17:00 UTC

  1. Base forecastday 29, 18:00 UTC to day 30, 24:00 UTC

    240° at 10 knots · 10 km or more · SCT at 4000 ft

    24010KT 9999 SCT040

    C

  2. Becomingday 30, 02:00 UTC to day 30, 04:00 UTC

    240° at 10 knots · 4 km · mist · BKN at 800 ft

    BECMG 3002/3004 4000 BR BKN008

    M8

  3. Temporary, 30 %day 30, 04:00 UTC to day 30, 08:00 UTC

    240° at 10 knots · 0.8 km · fog · BKN at 200 ft

    PROB30 TEMPO 3004/3008 0800 FG BKN002

    X

  4. Fromfrom day 30, 11:00 UTC

    270° at 15 knots (gusts up to 25 knots) · 10 km or more · SCT at 3000 ft

    FM301100 27015G25KT 9999 SCT030

    C

  5. Temporaryday 30, 14:00 UTC to day 30, 18:00 UTC

    270° at 15 knots (gusts up to 25 knots) · 10 km or more · light showers rain · BKN at 2000 ft

    TEMPO 3014/3018 -SHRA BKN020

    O

How the decoder works

Enter an airfield's ICAO identifier, for example EGLL for London Heathrow, and click Decode. The decoder fetches the current TAF and splits it into its groups. Below them the forecast appears as a list of periods. You can also paste a complete TAF from a briefing.

Change groups only list what changes. So the decoder works out the complete weather for each period, the base forecast with every change up to that point, and grades it into a GAFOR category. Temporary deviations are indented.

The structure of a TAF

ExampleMeaning
TAFTAF, or TAF AMD for a forecast reissued early
EDDPICAO code of the airfield
291700ZIssue time: day, hour and minute in UTC
2918/3024Validity: from the 29th at 18 UTC to the 30th at 24 UTC
24010KT 9999 SCT040Base forecast with wind, visibility, weather and cloud
FM301200from the 30th at 12:00 UTC a new forecast applies
BECMG 3002/3004gradual, lasting change during the period
TEMPO 3014/3018temporary deviation during the period
PROB30change with a 30 or 40 % probability
TX25/3014Zexpected maximum and minimum temperature with time

Every abbreviation and its meaning is in the list of METAR abbreviations.

The decoder is a reading aid. For flight planning, the official sources and a weather briefing apply.

The weather as a map

The METARMAP fetches the METARs of around 80 airfields every five minutes and shows each one as an LED in its GAFOR colour.

Frequently asked questions