Deep freeze to follow storm's soaking rains

EDISON -

The winter storm that started out with a burst of snow is bringing soaking rains to much of New Jersey that could lead to flooding, and plunging temperatures later Sunday could bring dangerous, icy conditions.

A winter storm warning was issued for northwestern counties, and flood watches, flash flood watches and coastal flood advisories were also posted for parts of the state.

News 12 meteorologists say heavy rain overnight will continue into Sunday morning, with northern areas seeing a gradual transition from snow to ice and rain. Winds will pick up E/SE 10-15 mph with gusts 30 mph down the shore.

MORE: Weather Center | Traffic Center

For Sunday, expect heavy rain in the morning. Ice is possible in the northwestern most areas as colder air comes back in. Temperatures before noontime will peak in the upper-30s in the north through the upper-40s south, but will then plunge into the 20s during the afternoon. Any lingering showers in the afternoon could change back to some snow or a wintry mix as they move out of the area.

Winds will be gusty, at SW/NW 10-20 mph  and gusting to 35-40 mph, which could lead to power outages. Tidal flooding is a concern, as well as some regular flooding from the heavy rain.

For Sunday night, skies will gradually clear as brutally cold air settles in. The rapid drop in temperatures could lead to a "flash freeze," leading to glazing on roadways and surfaces. Drivers are urged to use caution Sunday afternoon into Monday morning.

Temperatures Sunday night will range from 1-10 degrees, but feel like 7 to 14 degrees below zero due to the winds.

For Martin Luther King Jr. Day on Monday, it will be partly sunny and breezy but still frigid. The high will be 16 degrees.

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