Forecasters said they were watching the duration of the storm, which could linger into Monday.

The storm is expected to ease slightly Sunday, but could bring steady rain and winds still consistently at 25 mph, according to the weather service.

The rate of rainfall could be lighter, at less than a half inch per hour, but the duration could mean a total of six inches over three days, National Weather Service Meteorologist Dominick Ramunni said.

“The wind and coastal flooding could be most impactful Saturday, but we could end up with more rain on Sunday,” Ramunni said. “It will be windier Saturday and by Sunday afternoon, things will gradually start to lighten and weaken by Monday.”

Wind gusts of about 40 mph were expected to increase overnight Friday and ramp up more Saturday, which will be the height of the storm, said Ramunni.

The storm could bring ocean waves between 7 to 15 feet on Western Long Island, and between 15 to 22 feet tall on Eastern Long Island, where the twin forks are expected to be battered with winds possibly up to 60 mph, state officials and meteorologists said.

“The biggest hazard from this system, on top of the wind, is the coastal flooding,” Ramunni said. “It will be most significant with the morning high tide cycle Saturday and Sunday morning as well.”

PLUS: Home heating oil prices rise and deer population explodes Credit: Newsday

Hochul, Blakeman poll, home heating oil prices rise, and deer population explodes. Here's a look at some of the exclusive stories you may have missed this week on NewsdayTV.

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