KGTF TAF
Terminal aerodrome forecast for Great Falls International (GTF · KGTF), Great Falls, MT. Issued 5 Nov 2026 1120Z, valid 1200Z to 1200Z, decoded period by period below. · Open on the map
All of Great Falls International — runways, frequencies, charts and live weatherTAF issued 5 Nov 2026 1120Z
valid 1200Z to 1200ZTAF KGTF 051120Z 0512/0612 22012G21KT P6SM SKC FM051900 23016G29KT P6SM BKN150 FM060400 22011G19KT P6SM FEW200
Times are UTC (Zulu), as they appear in the bulletin.
Period by period
| Period (UTC) | Change | Wind | Vis | Ceiling | Sky | Cat |
|---|---|---|---|---|---|---|
| 1200Z to 1900Z | Initial | 220° at 12-21 kt | 6+ SM | Clear | Clear below 12,000 ft | VFR |
| 1900Z to 0400Z | FM | 230° at 16-29 kt | 6+ SM | 15,000 ft BKN | Broken at 15,000 ft AGL | VFR |
| 0400Z to 1200Z | FM | 220° at 11-19 kt | 6+ SM | Clear | Few at 20,000 ft AGL | VFR |
What the change groups mean
- FM
- From — a rapid, permanent change to the conditions that follow.
What the categories mean
- VFR
- Visual flight rules — ceiling above 3,000 ft and visibility greater than 5 SM.
Frequently asked
What is the current TAF for KGTF?
The forecast issued 5 Nov 2026 1120Z for Great Falls International reads: TAF KGTF 051120Z 0512/0612 22012G21KT P6SM SKC FM051900 23016G29KT P6SM BKN150 FM060400 22011G19KT P6SM FEW200
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 KGTF
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Something here wrong or out of date?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.