Long Island is now looking at a possible 4 to 6 inches of snow, starting during the Friday morning commute, the National Weather Service said Thursday afternoon.
The heaviest snowfall, though, is expected from 2 to 8 p.m., so there could be "significant impacts" to the evening ride home, the weather service said. And, there could be a period of freezing drizzle Saturday morning, as the snow ends.
The service has issued a winter weather advisory from 6 a.m. Friday to 2 a.m. Saturday.
News 12 Long Island meteorologist Rich Hoffman expects the storm to push Long Island snow totals for the season to more than 60 inches.
Hoffman said Thursday the season's snowfall total at Long Island MacArthur Airport is 56.6 inches, more than 30 inches above normal for this time of the year.
"The normal value to this point in the year is 23 inches," Hoffman said. "At this point last year, we had 58.9 inches."
Snow could fall as early as 9 a.m., Hoffman said; the weather service earlier had been calling for snow mostly after 1 p.m.
Daily highs Friday are likely to be in the low to mid-30s, with windchill values making it feel like it's between 20 and 25 degrees, the service said.
Chance of precipitation ranges from 80 percent to 90 percent.
Before the storm, temperatures Thursday are expected to be crisp and cold, with daily highs in the upper 30s. Skies were mostly sunny with a chilly northwest wind from 8 mph to 14 mph.
Overnight lows into Friday morning are expected to be in the low 20s, with winds calming to 5 mph to 7 mph.