Updated LI Snow Timeline: What To Expect, When, And How Much

LONG ISLAND, NY — With snow headed for Long Island Saturday, here's a timeline of what to expect.

According to the National Weather Service, a winter weather advisory remains in effect across Long Island from 5 p.m. Saturday through 11 a.m. Sunday.

James Tomasini, meteorologist with the NWS office in Upton, told Patch that the snow is expected to start as early as 4 p.m. or 5 p.m., becoming moderate to heavy at around 7 p.m. to 8 p.m. Sometime around midnight, the snow will become mixed with sleet, he said.

Sunday morning, Long Islanders can expect a mix of freezing rain, tapering off from west to east at about 7 a.m., with the precipitation ending by about 10 a.m., Tomasini said.

Snow accumulation is expected to total 2 to 5 inches and, because of the chance of freezing rain, a glaze of ice accumulation is expected, Tomasini said.

Temperatures Saturday are expected to rise to the mid-30s, dropping overnight to the upper 20s, then climbing again Sunday to the upper 30s, with the potential to reach the low 40s, Tomasini said.

Motorists should slow down and use caution while driving, the NWS said.