KWYS TAF

Terminal aerodrome forecast for Yellowstone (WYS · KWYS), West Yellowstone, MT. Issued 21 Sep 2026 0007Z, valid 0000Z to 0000Z, decoded period by period below. · Open on the map

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TAF issued 21 Sep 2026 0007Z

valid 0000Z to 0000Z

TAF KWYS 210007Z 2100/2124 VRB06KT P6SM SCT015 BKN035 FM210600 VRB06KT P6SM FEW015 FM210900 VRB06KT 6SM BR SCT005 TEMPO 2112/2115 3/4SM BR BKN005 FM211700 VRB06KT P6SM SKC

Times are UTC (Zulu), as they appear in the bulletin.

Period by period

Period (UTC)	Change	Wind	Vis	Ceiling	Sky	Cat
0000Z to 0600Z	Initial	Variable at 6 kt	6+ SM	3,500 ft BKN	Scattered at 1,500 ft AGL, Broken at 3,500 ft AGL	VFR
0600Z to 0900Z	FM	Variable at 6 kt	6+ SM	Clear	Few at 1,500 ft AGL	VFR
0900Z to 1700Z	FM	Variable at 6 kt	6+ SM	Clear	Scattered at 500 ft AGL	VFR
1200Z to 1500Z	TEMPO	Calm	0.75 SM	500 ft BKN	Broken at 500 ft AGL	LIFR
1700Z to 0000Z	FM	Variable at 6 kt	6+ SM	Clear	Clear below 12,000 ft	VFR

What the change groups mean

FM: From — a rapid, permanent change to the conditions that follow.
TEMPO: Temporary — expected for less than half the period, in spells under an hour.

What the categories mean

VFR: Visual flight rules — ceiling above 3,000 ft and visibility greater than 5 SM.
LIFR: Low IFR — ceiling below 500 ft and/or visibility less than 1 SM.

Frequently asked

What is the current TAF for KWYS?

The forecast issued 21 Sep 2026 0007Z for Yellowstone reads: TAF KWYS 210007Z 2100/2124 VRB06KT P6SM SCT015 BKN035 FM210600 VRB06KT P6SM FEW015 FM210900 VRB06KT 6SM BR SCT005 TEMPO 2112/2115 3/4SM BR BKN005 FM211700 VRB06KT P6SM SKC

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 KWYS

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.

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