The National Weather Service has issued a high-wind watch for Long Island, in effect this afternoon through 6 a.m. Wednesday, as a storm front moves in, bringing heavy rain and a small chance of a tornado.

Winds will be sustained at 15-25 mph with gusts of 50-60 mph possible, the weather service said. Potential effects include downed tree limbs and power lines, as well as power outages, forecasters said.

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Severe thunderstorms will continue through Wednesday morning, the Upton-based agency said.

Long Island rainfall amounts could range between 1 and 2 inches, the agency said. Chance for precipitation Tuesday is 60 percent during the day and 100 percent Tuesday night, the service said.

Meteorologist David Stark said the clash between a north-moving warm front and an east-moving cold front could set up conditions for a tornado.

With high winds and heavy rain ahead, there also is a high risk for rip currents on Atlantic beaches off Long Island, Queens and Brooklyn, the National Weather Service said. The high risk advisory for rip currents runs to 8 p.m. and includes surf heights of 4 feet to 6 feet.