KISP TAF

Terminal aerodrome forecast for Long Island Mac Arthur (ISP · KISP), New York, NY. Issued 21 Sep 2026 0239Z, valid 0300Z to 0000Z, decoded period by period below. · Open on the map

All of Long Island Mac Arthur — runways, frequencies, charts and live weather

TAF issued 21 Sep 2026 0239Z

valid 0300Z to 0000Z

TAF KISP 210239Z 2103/2124 01005KT P6SM -DZ SCT012 BKN025 FM210900 01011KT P6SM BKN030 FM211200 01016G24KT P6SM BKN035 FM211600 02012G20KT P6SM BKN035 FM211900 03010G18KT P6SM BKN040 FM212200 04008KT P6SM SCT040 BKN100

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

Period by period

Period (UTC)	Change	Wind	Vis	Ceiling	Sky	Cat
0300Z to 0900Z	Initial	010° at 5 kt	6+ SM	2,500 ft BKN	Scattered at 1,200 ft AGL, Broken at 2,500 ft AGL	MVFR
0900Z to 1200Z	FM	010° at 11 kt	6+ SM	3,000 ft BKN	Broken at 3,000 ft AGL	MVFR
1200Z to 1600Z	FM	010° at 16-24 kt	6+ SM	3,500 ft BKN	Broken at 3,500 ft AGL	VFR
1600Z to 1900Z	FM	020° at 12-20 kt	6+ SM	3,500 ft BKN	Broken at 3,500 ft AGL	VFR
1900Z to 2200Z	FM	030° at 10-18 kt	6+ SM	4,000 ft BKN	Broken at 4,000 ft AGL	VFR
2200Z to 0000Z	FM	040° at 8 kt	6+ SM	10,000 ft BKN	Scattered at 4,000 ft AGL, Broken at 10,000 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.
VFR: Visual flight rules — ceiling above 3,000 ft and visibility greater than 5 SM.

Frequently asked

What is the current TAF for KISP?

The forecast issued 21 Sep 2026 0239Z for Long Island Mac Arthur reads: TAF KISP 210239Z 2103/2124 01005KT P6SM -DZ SCT012 BKN025 FM210900 01011KT P6SM BKN030 FM211200 01016G24KT P6SM BKN035 FM211600 02012G20KT P6SM BKN035 FM211900 03010G18KT P6SM BKN040 FM212200 04008KT P6SM SCT040 BKN100

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 KISP

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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