New Snow Total Estimates, Storm Timing, For Long Island

LONG ISLAND, NY — Snow is expected to begin falling across Long Island by noon and it could lead to a messy Monday evening commute.

Snow total estimates have increased slightly to 1-4 inches, with the highest amounts likely along the South Shore in Suffolk County. A winter weather advisory will be in effect from 9 a.m. to 7 p.m. for most of Suffolk.

"There will be a sharp cutoff of precipitation just over or immediately south of the area," the weather service said. "Guidance has shown this sharp gradient consistently but has struggled with both the snowfall amounts and the exact placement of the gradient."

Plan on slippery road conditions, the National Weather Service urged. Slow down and use caution while traveling.

Any snow should end by the evening. Tuesday looks dry, but freezing with wind chill temperatures dipping close to single digits early in the day.

The maps below show the odds of various amounts of snow across the island.