KWYS TAF

Terminal aerodrome forecast for Yellowstone (WYS · KWYS), West Yellowstone, MT. Issued 5 Nov 2026 0537Z, valid 0600Z to 0600Z, decoded period by period below. · Open on the map

All of Yellowstone — runways, frequencies, charts and live weather

TAF issued 5 Nov 2026 0537Z

valid 0600Z to 0600Z

TAF KWYS 050537Z 0506/0606 VRB03KT P6SM OVC010 FM051000 VRB03KT 1/2SM FZFG BKN005 TEMPO 0513/0517 1/4SM FZFG OVC002 FM051900 VRB06KT 1SM BR BKN008 FM052300 VRB06KT P6SM BKN012

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

Period by period

Period (UTC)	Change	Wind	Vis	Ceiling	Sky	Cat
0600Z to 1000Z	Initial	Variable at 3 kt	6+ SM	1,000 ft OVC	Overcast at 1,000 ft AGL	MVFR

1000Z to 1900Z	FM	Variable at 3 kt	0.5 SM	500 ft BKN	Broken at 500 ft AGL	LIFR

1300Z to 1700Z	TEMPO	No change	0.25 SM	200 ft OVC	Overcast at 200 ft AGL	LIFR

1900Z to 2300Z	FM	Variable at 6 kt	1 SM	800 ft BKN	Broken at 800 ft AGL	IFR

2300Z to 0600Z	FM	Variable at 6 kt	6+ SM	1,200 ft BKN	Broken at 1,200 ft AGL	MVFR

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

MVFR: Marginal VFR — ceiling 1,000 to 3,000 ft and/or visibility 3 to 5 SM.
LIFR: Low IFR — ceiling below 500 ft and/or visibility less than 1 SM.
IFR: Instrument flight rules — ceiling 500 to 999 ft and/or visibility 1 to less than 3 SM.

Frequently asked

What is the current TAF for KWYS?

The forecast issued 5 Nov 2026 0537Z for Yellowstone reads: TAF KWYS 050537Z 0506/0606 VRB03KT P6SM OVC010 FM051000 VRB03KT 1/2SM FZFG BKN005 TEMPO 0513/0517 1/4SM FZFG OVC002 FM051900 VRB06KT 1SM BR BKN008 FM052300 VRB06KT P6SM BKN012

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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