Snow Blindsides Long Island; Winter Weather Advisory In Effect

Long Islanders are waking up Tuesday morning to a surprise sight out their windows. Just hours after forecasters were predicting just a dusting of snow for much of the region, things have changed big time.

A winter weather advisory is now in effect until 10 a.m. for the island. A total of 2-6 inches of snow is likely across the island. In Suffolk County, where many school districts have announced delayed openings, eight inches of snow is possible.

"Plan on slippery road conditions, including during the morning commute," the winter weather advisory says.

The full forecast:

Tuesday- Snow, mainly before 10am. High near 33. Wind chill values between 15 and 25. Northwest wind 8 to 17 mph. Chance of precipitation is 100%. Total daytime snow accumulation of less than one inch possible.

Tuesday Night- Mostly cloudy, then gradually becoming mostly clear, with a low around 19. Wind chill values between 10 and 15. Northwest wind 7 to 13 mph, with gusts as high as 23 mph.

Wednesday- Mostly sunny, with a high near 34. Wind chill values between 10 and 20. North wind around 8 mph becoming southwest in the afternoon.

Wednesday Night- Mostly cloudy, with a temperature rising to around 34 by 4am. Wind chill values between 20 and 25. Southwest wind around 9 mph, with gusts as high as 21 mph.

Thursday- A 20 percent chance of rain after 1pm. Mostly cloudy, with a high near 42. Southwest wind 9 to 13 mph.

Thursday Night- Rain likely before 3am, then rain and snow likely. Cloudy, with a low around 30. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

Friday- A 40 percent chance of snow before noon. Cloudy, then gradually becoming mostly sunny, with a high near 35.

Friday Night- Partly cloudy, with a low around 13.