An area of low pressure is moving up the East Coast, prompting meteorologists — as of late Monday afternoon — to predict that the main threat to Long Island will probably be high surf and rip currents.

The system was “forecast to intensify as it moves northeast, passing around 250 miles southeast of Montauk Point Wednesday morning,” according to a briefing from the National Weather Service’s Upton office.

Confidence was increasing in a track that would mean no dire, widespread impact on Long Island, according to Tim Morrin, weather service meteorologist in Upton.

There is potential for a high risk of rip currents at Atlantic beaches through Wednesday, the weather service said. That and high surf, with possible minor beach erosion Tuesday night into Wednesday.

“The big story here” is for rough surf, with likely rip current warnings for Long Island, said Rich Von Ohlen, executive weather producer, News 12 Traffic and Weather. “Area beaches should be on high alert, as swimming will be dangerous through Wednesday,” he said.

The good news is that the latest track takes it well to the southeast of the Island, he said.

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Winds from the northeast of 20 to 25 mph were forecast mostly for overnight Tuesday night, with gusts of 30 to 35 mph, the weather service said. The South Shore could see isolated gusts of 40 mph.

Rainfall of less than half an inch was expected, starting Tuesday afternoon and lasting into early Wednesday, Morrin said.