Winter Storm Warning Issued For LI: Town-By-Town Snow Estimates

LONG ISLAND, NY — The National Weather Service has issued a winter storm warning for Long Island. It's in effect from 7 p.m. Friday until 7 p.m. Saturday.

If you have plans for Saturday, they aren't happening. Snow will be falling at rate of 1-2 inches per hour for much of the day. Wind gusts as high as 50 mph will cause near-blizzard conditions.

At least a foot of snow is expected to accumulate in Suffolk County and Nassau County totals won't be far behind. There's about a 30 percent chance of more than 18 inches of snow across the island, according to weather service snow total maps.

Blizzard warnings may be issued, especially for eastern Suffolk.

Travel will become very difficult to impossible, the weather service says.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency, the weather service says.

Gusty winds could bring down tree branches and power lines. PSEG Long Island says it's ready for the storm.

“We have performed system and logistic checks, and have additional personnel at the ready," said Michael Sullivan, vice president of transmission & distribution for PSEG." However the storm tracks, our crews will safely restore any outages as quickly as these wintry conditions allow.”

Some light snow is possible through the day Friday. About an inch could fall before midnight, but the brunt of the storm arrives early Saturday.

The full forecast:

Friday- A 30 percent chance of snow, mainly after 1pm. Cloudy, with a high near 35. Wind chill values between 25 and 30. West wind around 6 mph becoming north in the afternoon.

Friday Night- Snow, mainly after 10pm. Low around 19. Wind chill values between 10 and 15. Blustery, with a north wind 8 to 13 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Saturday- Snow. The snow could be heavy at times. Temperature falling to around 19 by 4pm. Wind chill values between zero and 5. Windy, with a north wind 30 to 32 mph, with gusts as high as 48 mph. Chance of precipitation is 100%. New snow accumulation of 7 to 11 inches possible.

Saturday Night- A 40 percent chance of snow, mainly before 9pm. Cloudy during the early evening, then gradual clearing, with a low around 12. Wind chill values between -5 and zero. Windy, with a northwest wind 18 to 28 mph, with gusts as high as 39 mph.

Sunday- Sunny, with a high near 27. Northwest wind 11 to 17 mph.

Sunday Night- Mostly cloudy, with a low around 18.

Monday- Mostly sunny, with a high near 34.