The region woke up to an eerily thick fog this morning – enough for the National Weather Service to extend a dense fog advisory into this evening.
“We have warm temperatures containing a lot of moisture moving over colder ground, and warm air moving over snow creates fog,” said weather service meteorologist Charlie Foley.
Visibility will be a quarter-mile or less at times through mid-morning, and motorists are advised to slow down as objects on roadways will only be seen at close range, forecasters said.
Highs today will reach the relatively balmy mid-50s, in a sharp contrast to the subzero temperatures of just a few days ago. Rain showers, some with rumbles of thunder, will persist until about 8 p.m.
A cold front will work its way into the state this evening, dropping temperatures into the upper 20s and 30s. Some flurries are possible throughout the region. Wind chills values could drop as low as zero degrees by daybreak.
“There may be some scattered, light flurries, but nothing of great consequence,” Foley said.
The arctic air will stay in the region until Thursday morning. Temperatures will begin moderating Thursday afternoon, reaching the low 30s and then the mid-30s Friday.