Long Island weather: Clearing skies forecast across region as morning storms pass

Clearing skies and warm temperatures were forecast after heavy storms crossed Long Island early Sunday.

The storm, which caused delays at area airports and localized flooding, passed through the island's East End and out to sea, radar images indicated at 11 a.m.

The National Weather Service had issued a special marine warning for Eastern Suffolk County from Moriches Inlet to Montauk Point, warning of severe thunderstorms capable of producing waterspouts.

The warning expired at 10:45 a.m. There were no immediate reports of damage or injuries.

The service said the line of storms was visible on radar moving east across Great Peconic Bay at 25 knots, or 29 mph. Waterspouts are capable of overturning boats and create locally hazardous seas, the weather service said.

A flood advisory was issued for eastern Nassau and Suffolk counties that expired at 10 a.m. as heavy storms passed through the region Sunday. Clouds were expected to give way to sun with temperatures in the low 80s and overnight in the mid 60s.

A flash flood warning was issued for Nassau County Sunday morning as a heavy storm passed west to east across the region and caused delays at the major New York airports, authorities said.

The storm traveled east Sunday morning from New York City into Nassau County, according to Joe Pollina, a meteorologist at the National Weather Service.

Brief periods of heavy rain disrupted flights at Kennedy Airport, and there were reports of some flash flooding in New Jersey, Pollina said. 

One flight departing JFK was canceled and 15 were delayed; one arriving at JFK was canceled and 38 delayed (5% of the arriving flights), according to FlightAware's tracker.

At LaGuardia, six departing flights and 13 arriving flights were delayed; none were canceled.

Nassau police had several reports of flooded roads, including at New Hyde Park Road in North Hills, where a vehicle stuck in water, and Port Washington Boulevard in Flower Hill was closed briefly between Crabapple Road and Bayberry Ridge due to flooding. The road has since been reopened, police said.

A manhole cover near Great Neck Road and Northern Boulevard in Great Neck had been pushed off, which police said can happen when the sewers are overwhelmed by water.

Half an inch to 1.5 inches of rain had already fallen in parts of Long Island, and additional rainfall from half and inch to 1.5 inches was expected in some areas as the storm moves through.

Monday will be sunny with a high of 80 and a small chance of rain in the afternoon after 2 p.m. Tuesday and Wednesday will bring the same: clear skies and temperatures around 80 during the day and in the low to mid 60s at night.