A coastal flood advisory is effect for Thursday morning, from 7 a.m. to 11 a.m., for the southern portions of Nassau and Suffolk counties, forecasters said.

"Widespread minor coastal flooding is expected during the times of high tide," the National Weather Service said in its advisory.

Tides will be 0.30 to 0.60 feet above astronomical tide, the weather service said.

Low-lying areas along the coastline are the most vulnerable to flooding.

Periods of rain and patchy fog are expected Thursday on Long Island, with a high near 56 degrees. The chance of rain is 100 percent, forecasters said.

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