Snow Squall Warning Expanded To All Of Long Island

The National Weather Service has expanded a snow squall warning to all of Long Island. It's in effect until 5:30 p.m.

The squall could cause whiteout conditions with zero visibility in heavy, blowing snow. Wind gusts up to 40 mph are possible. Traveling through a squall can be "dangerous" and "life-threatening."

Consider avoiding or delaying travel until the snow squall passes your location. If you must travel, use extra caution and allow extra time. Rapid changes in visibility and slick road conditions may lead to accidents. A quick half-inch to an inch of snow accumulation is possible.

A wind advisory will be in effect from 6 p.m. Wednesday until 6 a.m Thursday for the East End where the winds are expected to be the strongest. Gusty winds up to 50 mph could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

The full forecast:

Wednesday Afternoon- Scattered snow showers, mainly after 3pm. Increasing clouds, with a temperature falling to around 35 by 5pm. Wind chill values between 25 and 30. West wind 13 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

Wednesday Night- Scattered snow showers, mainly before 9pm. Mostly cloudy, then gradually becoming clear, with a low around 17. Wind chill values between zero and 10. Blustery, with a northwest wind 20 to 23 mph, with gusts as high as 40 mph. Chance of precipitation is 40%.

Thursday- Sunny, with a high near 29. Wind chill values between zero and 10. Northwest wind 14 to 17 mph, with gusts as high as 29 mph.

Thursday Night- Mostly clear, with a low around 19. Wind chill values between 10 and 15. Northwest wind 10 to 14 mph.

Friday- Sunny, with a high near 33. Northwest wind 9 to 13 mph.

Friday Night- Mostly clear, with a steady temperature around 27.

Saturday- Mostly sunny, with a high near 37.

Saturday Night- Partly cloudy, with a low around 29.

Sunday- Mostly sunny, with a high near 44.