Wind chill advisory in effect through 6 p.m.

FI-snow-flakeToday could feel like one of the coldest days in decades, with highs not expected to surpass 11 degrees in southwestern Connecticut.

A wind chill advisory remains in effect for Greenwich and the rest of southwestern Connecticut through 6 p.m. Tuesday, Jan. 7.

The wind chill could make it feel 15 below zero on Tuesday — after Monday’s high of 55. Winds are expected to be 20 to 30 mph with gusts up to 45 mph.

“Prolonged exposure to the bitter cold and wind could lead to frostbite and hypothermia,” according to the National Weather Service.

Along with the wind child advisory Tuesday is a wind advisory. The high winds of 20 to 30 mph are expected to diminish by the afternoon. The high winds could impact driving conditions, according to the weather service. At 6:30 a.m., winds were blowing at 7 mph but a gust of 30 mph was recorded this morning.

The rapidly falling temperatures over the past 24 hours — drops of one to four degrees an hour since 8 a.m. Monday — have caused moisture on roadways and sidewalks to freeze and create black ice.

“This will mainly be an issue on secondary roads,” according to the weather service.

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