Warmer air from the south will begin to pattern overspreads the northeastern states as surface high spreads east and off the coast. Tapping into Gulf of Mexico moisture, snow breaks out in response late Friday night, well after dark. A chance of scattered snow in the morning and a slight chance of snow late in the evening are also in the forecast.
Temperatures Thursday night into Friday morning are expected to feel as if they are well below zero due to the wind chill. Low temperatures will be in the upper 20s and lower 30s. As cold winds blow from the northwest, we've already seen the daytime high temperatures, which generally came in the upper teens and low 20s around 11 a.m. Temperatures will continue to slowly fall throughout the afternoon, until the bottom falls out of the thermometer with nightfall.
The coldest of the air will be here on Friday. The wind chill Friday morning could be below 9 degrees in Boston, and perhaps below 20 degrees in the western part of the state.
Bitterly cold Friday morning with continued low wind chills ranging from -5 to 30 below this morning.
Temperatures in Chicago were expected to plummet below 2F (-17C) on Sunday, possibly breaking the 1983 record for the coldest game ever played in that city's Soldier Field NFL stadium. The temperatures will increase on Saturday to the 50s; however, while the air mass transitions from cold to warm air we could be dealing with snow or worse: ice. On Saturday, the region will get several inches of snow. Eight to 16 inches of snow is predicted along with howling winds, gusting over 40 miles per hour at times Thursday and Thursday night. A frontal system to our west will move into the viewing area overnight into Saturday.
For the next 36 hours, a swarm of arctic air will plunge temperatures into the teens, giving the region its first true taste of winter-which is still officially a week away. A period of snow and or a combination of sleet and freezing rain is possible early Friday night before changing to light rain around 12 a.m.
A wintry mix is likely into Saturday from the Middle Atlantic to southern new England with another blast of cold weather coming next week.