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TAF Decoder

A TAF is the official forecast for the area within 5 statute miles of an airport, usually covering 24 to 30 hours. Pull the latest one or paste your own, and see each forecast period in plain English with its flight category.

Only larger airports issue TAFs. In Utah, try KSLC, KOGD, KPVU, KLGU, KSGU or KCDC.

How to read a TAF

  • Header TAF KSLC 172320Z 1800/1906: issued on the 17th at 23:20Z, valid from the 18th at 00Z to the 19th at 06Z.
  • FM FM180300: "from" a set time, conditions change completely to what follows.
  • TEMPO: temporary changes lasting less than an hour at a time, covering less than half the period.
  • BECMG: a gradual change over the period shown.
  • PROB30 / PROB40: a 30% or 40% chance of the conditions that follow.
  • WS: low-level wind shear. P6SM: visibility more than 6 miles.

Live forecasts come from the National Weather Service's Aviation Weather Center (aviationweather.gov). This tool is a study aid: for flight planning, get an official briefing.

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