KBOS TAF

Terminal aerodrome forecast for General Edward Lawrence Logan International (BOS · KBOS), Boston, MA. Issued 21 Sep 2026 0002Z, valid 0000Z to 0600Z, decoded period by period below. · Open on the map

All of General Edward Lawrence Logan International — runways, frequencies, charts and live weather

TAF issued 21 Sep 2026 0002Z

valid 0000Z to 0600Z

TAF KBOS 210002Z 2100/2206 14009KT 6SM -RA BKN015 OVC030 FM210200 08009KT 5SM BR OVC008 FM210600 36006KT 5SM BR OVC005 FM211000 36010KT 5SM BR OVC008 FM211400 03011G20KT P6SM BKN040 FM212200 06008KT P6SM BKN150

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

Period by period

Period (UTC)	Change	Wind	Vis	Ceiling	Sky	Cat
0000Z to 0200Z	Initial	140° at 9 kt	6+ SM	1,500 ft BKN	Broken at 1,500 ft AGL, Overcast at 3,000 ft AGL	MVFR
0200Z to 0600Z	FM	080° at 9 kt	5 SM	800 ft OVC	Overcast at 800 ft AGL	IFR
0600Z to 1000Z	FM	360° at 6 kt	5 SM	500 ft OVC	Overcast at 500 ft AGL	IFR
1000Z to 1400Z	FM	360° at 10 kt	5 SM	800 ft OVC	Overcast at 800 ft AGL	IFR
1400Z to 2200Z	FM	030° at 11-20 kt	6+ SM	4,000 ft BKN	Broken at 4,000 ft AGL	VFR
2200Z to 0600Z	FM	060° at 8 kt	6+ SM	15,000 ft BKN	Broken at 15,000 ft AGL	VFR

What the change groups mean

FM: From — a rapid, permanent change to the conditions that follow.

What the categories mean

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

Frequently asked

What is the current TAF for KBOS?

The forecast issued 21 Sep 2026 0002Z for General Edward Lawrence Logan International reads: TAF KBOS 210002Z 2100/2206 14009KT 6SM -RA BKN015 OVC030 FM210200 08009KT 5SM BR OVC008 FM210600 36006KT 5SM BR OVC005 FM211000 36010KT 5SM BR OVC008 FM211400 03011G20KT P6SM BKN040 FM212200 06008KT P6SM BKN150

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 KBOS

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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