Flash Flood Watch Issued For Long Island

The National Weather Service has issued a flash flood watch for Long Island. It will be in effect until 5 p.m. Saturday.

Showers and thunderstorms will become widespread across western Long Island early Saturday morning and move eastward through the afternoon. Areas of urban and poor drainage flooding are likely, with localized flash flooding possible.

Flash flooding can be expected in locations that experience successive thunderstorms moving through.

A flash flood watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should flash flood warnings be issued.

The rain should end by Saturday evening, the NWS says.

The full forecast:

Friday Night- A 20 percent chance of showers and thunderstorms after 3am. Mostly cloudy, with a steady temperature around 77. South wind 10 to 14 mph.

Saturday- Showers and possibly a thunderstorm. Some of the storms could produce gusty winds and heavy rain. High near 81. South wind 9 to 11 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Saturday Night- A 30 percent chance of showers and thunderstorms, mainly before 8pm. Patchy fog after midnight. Otherwise, mostly clear, with a low around 73. South wind 3 to 8 mph.

Sunday- Sunny, with a high near 87. Light and variable wind becoming southwest around 6 mph in the afternoon.

Sunday Night- Mostly clear, with a low around 73. Southwest wind 3 to 6 mph.

Monday- Sunny, with a high near 90.