Forecast: A stormy overnight on Long Island with more to come Thursday

Remnants of Ida lashed Long Island late Wednesday and early Thursday, dumping sheets of rain, spurring flash flood and tornado warnings, power outages and suspension of all LIRR service.

The storm, a category 4 hurricane when it hit New Orleans this past weekend, is forecast to continue through late Thursday morning with clouds and light rain possible after that before the skies begin to clear at night, according to the National Weather Service. The high Thursday should top out about 70 degrees with gusts of up to 17 mph with some hitting 32 mph.

About 2:15 a.m. Thursday, more than 13,200 PSEG Long Island customers were without power, and crews had been dispatched to the trouble areas, according to the utility's website.

Satellite radar images online told the weather story in real time with deep orange blotches crisscrossing Nassau and Suffolk, signifying the heaviest downpours. Patches of green mixed to the east and west, denoted lighter rain.

A tornado warning from the National Weather Service buzzed on Long Island cellphones about 10:40 p.m. with an ominous alert.

"Take shelter now in a basement or an interior room on the lowest floor of a sturdy building," read the text. The warning ended at 11:15 p.m. but the stormy conditions continued.

A tornado watch expired at 1 a.m. Thursday for Long Island.

The Long Island Rail Road suspended systemwide service "due to severe weather conditions, including flash flooding," the railroad tweeted. "Customers are advised not to travel at this time. We will provide further updates as they become available."

Gov. Kathy Hochul declared a state of emergency early Thursday for Nassau, Suffolk and other counties, including Bronx, Dutchess, Kings, New York, Orange, Putnam, Queens, Richmond, Rockland, Sullivan, Ulster and Westchester.

Mayor Bill de Blasio declared one for New York City.

"We’re enduring a historic weather event tonight with record breaking rain across the city," the mayor tweeted, "brutal flooding and dangerous conditions on our roads."

The weather service recorded 3.15 inches of rain at Central Park in one hour, far surpassing the 1.94 inches that fell in one hour during Tropical Storm Henri on the night of Aug. 21, which was believed at the time to be the most ever recorded in the iconic park.

A flash flood warning is in effect for most of Long Island until 6:30 a.m. Thursday, the weather service said.

The storm dumped rain Wednesday night on Long Island at a rate of about 1 to 2 inches an hour at some points, the weather service said, with up to 2 inches more possible before the remnants of Ida clear out Thursday.

Kennedy Airport's Twitter page said high winds had led to arrival and departure delays Wednesday night. The rain had also "caused flight disruptions" at LaGuardia Airport," said a tweet on its page.

In New York City, "train service is extremely limited, if not suspended, because of heavy rainfall across the region," said an alert about 10:45 p.m. Wednesday from the city emergency management department.

A gale warning for mariners remains in effect until 10 a.m. Thursday and a flash flood watch remains through 2 p.m.

"The rainfall should begin to taper off Thursday morning into the early afternoon from west to east," the weather service said.

Clear, sunny skies are predicted for Friday and Saturday.

With Matthew Chayes, Joan Gralla, Keldy Ortiz and AP