Severe Thunderstorm and Flash Flooding Threats in the South

Organized severe thunderstorms capable of producing mainly large hail and perhaps damaging winds are expected across portions of Louisiana this afternoon with a second round further west tonight. Heavy thunderstorms may lead to flash flooding over portions of the northern Gulf Coast today through Saturday. Several inches of excessive rainfall are possible with Flash Flood Watches in effect.
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Last Update: 1215 PM EDT Tue Apr 13 2021

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New York, NY Local Forecast Office

17NM SE Islip NY

Marine Zone Forecast

Synopsis: ANZ300-140515- 1215 PM EDT Tue Apr 13 2021 .Synopsis for the Long Island Waters and New York Harbor... High pressure builds over the region today and then offshore into Wednesday. Strong low pressure is expected to impact the waters Thursday and Friday followed by high pressure returning on Saturday. $$

This Afternoon

N winds 5 to 10 kt with gusts up to 20 kt, becoming W late. Seas around 4 ft.

Tonight

S winds 5 to 10 kt. Seas around 3 ft.

Wed

SW winds 5 to 10 kt. Seas around 3 ft.

Wed Night

S winds 10 to 15 kt. Seas around 3 ft. Chance of showers in the evening, then showers likely after midnight.

Thu

E winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Seas 3 to 5 ft, building to 4 to 7 ft in the afternoon. Showers likely. Vsby 1 to 3 nm.

Thu Night

NE winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Seas 5 to 7 ft. Rain likely.

Fri

N winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. Chance of rain.

Fri Night

N winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Chance of rain.

Sat

NW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft.

Sat Night

SW winds 5 to 10 kt. Seas 2 to 4 ft.