KSMN TAF

Terminal aerodrome forecast for Lemhi County (SMN · KSMN), Salmon, ID. Issued 20 Sep 2026 2320Z, valid 0000Z to 0000Z, decoded period by period below. · Open on the map

All of Lemhi County — runways, frequencies, charts and live weather

TAF issued 20 Sep 2026 2320Z

valid 0000Z to 0000Z

TAF KSMN 202320Z 2100/2124 VRB03KT P6SM SKC FM211100 00000KT 6SM BR VCFG SKC TEMPO 2111/2114 5SM BR FEW003 FM211400 00000KT P6SM SKC FM211900 35005KT 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 1100Z	Initial	Variable at 3 kt	6+ SM	Clear	Clear below 12,000 ft	VFR
1100Z to 1400Z	FM	000° at 0 kt	6+ SM	Clear	Clear below 12,000 ft	VFR
1100Z to 1400Z	TEMPO	Calm	5 SM	Clear	Few at 300 ft AGL	MVFR
1400Z to 1900Z	FM	000° at 0 kt	6+ SM	Clear	Clear below 12,000 ft	VFR
1900Z to 0000Z	FM	350° at 5 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.
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 KSMN?

The forecast issued 20 Sep 2026 2320Z for Lemhi County reads: TAF KSMN 202320Z 2100/2124 VRB03KT P6SM SKC FM211100 00000KT 6SM BR VCFG SKC TEMPO 2111/2114 5SM BR FEW003 FM211400 00000KT P6SM SKC FM211900 35005KT 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 KSMN

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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