Long Island Weather: Numerous Thunderstorms To Produce Flooding Rains, Damaging Winds

Strong, potentially severe, thunderstorms are expected to lash Long Island on Monday. A hazardous weather outlook is in effect for the entire island. A flash flood watch for Nassau County will begin at noon and last until 4 a.m. Tuesday.

Things will likely remain dry through Monday afternoon, according to the National Weather Service. There's a chance of rain and thunderstorms during the evening commute, but the window of 8 p.m. until around midnight is when the risk of severe weather will be at its highest.

"The main threat is from strong gusty winds, but an isolated weak tornado is also possible," the NWS says.

A weak tornado touched down on the North Fork last year.

Rain is likely to continue into early Tuesday but should end by sunrise.

The full forecast:

Monday- A slight chance of showers between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 78. Breezy, with a south wind 16 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 30%.

Monday Night- Showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then a chance of showers and thunderstorms after 4am. Some storms could be severe, with damaging winds and heavy rain. Low around 68. Breezy, with a south wind 17 to 22 mph decreasing to 11 to 16 mph after midnight. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

Tuesday- Cloudy, then gradually becoming mostly sunny, with a high near 81. Southwest wind 11 to 14 mph.

Tuesday Night- Partly cloudy, with a low around 66. Southwest wind 8 to 15 mph.

Wednesday- A 20 percent chance of showers after noon. Mostly sunny, with a high near 80. West wind 10 to 14 mph.

Wednesday Night- Partly cloudy, with a low around 65.

Thursday- Mostly sunny, with a high near 80.

Photo: Flickr/CreativeCommons/CGP Grey