KDEC TAF
Terminal aerodrome forecast for Decatur (DEC · KDEC), Decatur, IL. Issued 21 Sep 2026 0140Z, valid 0200Z to 0000Z, decoded period by period below. · Open on the map
All of Decatur — runways, frequencies, charts and live weatherTAF issued 21 Sep 2026 0140Z
valid 0200Z to 0000ZTAF KDEC 210140Z 2102/2124 03012KT 6SM BR OVC009 PROB30 2105/2110 3SM -TSRA OVC007CB FM211900 04009KT P6SM OVC012
Times are UTC (Zulu), as they appear in the bulletin.
Period by period
| Period (UTC) | Change | Wind | Vis | Ceiling | Sky | Cat |
|---|---|---|---|---|---|---|
| 0200Z to 1900Z | Initial | 030° at 12 kt | 6+ SM | 900 ft OVC | Overcast at 900 ft AGL | IFR |
| 0500Z to 1000Z | PROB | Calm | 3 SM | 700 ft OVC | Overcast at 700 ft AGL | IFR |
| 1900Z to 0000Z | FM | 040° at 9 kt | 6+ SM | 1,200 ft OVC | Overcast at 1,200 ft AGL | MVFR |
What the change groups mean
- FM
- From — a rapid, permanent change to the conditions that follow.
What the categories mean
- IFR
- Instrument flight rules — ceiling 500 to 999 ft and/or visibility 1 to less than 3 SM.
- MVFR
- Marginal VFR — ceiling 1,000 to 3,000 ft and/or visibility 3 to 5 SM.
Frequently asked
What is the current TAF for KDEC?
The forecast issued 21 Sep 2026 0140Z for Decatur reads: TAF KDEC 210140Z 2102/2124 03012KT 6SM BR OVC009 PROB30 2105/2110 3SM -TSRA OVC007CB FM211900 04009KT P6SM OVC012
How far ahead does a TAF forecast?
A TAF covers a 24-hour period at most airports and 30 hours at larger ones, issued four times a day at 0000Z, 0600Z, 1200Z and 1800Z. It describes conditions within roughly 5 statute miles of the airport, not the surrounding area.
What do FM, BECMG and TEMPO mean?
FM (from) marks a rapid, permanent change at the stated time. BECMG (becoming) marks a gradual change over the stated window. TEMPO marks conditions expected for less than half the period, in spells of under an hour each. PROB30 and PROB40 give the probability of the conditions that follow.
More about KDEC
Forecasts from the US National Weather Service Aviation Weather Center. Times are UTC (Zulu). For planning and education only — always confirm with an official preflight briefing.
Something here wrong or out of date? Report a data problem.