Snowflakes fell in Boston on Tuesday afternoon as unseasonably frigid air flowed in from the northwest and temperatures began to fall ahead of a cold, windy night. The rain is predicted to change to snow Tuesday morning in interior parts of the state and during the afternoon in eastern MA.
Snow accumulations of a coating to 1 inch are expected, with up to 2 inches possible in parts of Central and Western Massachusetts.
"Temperatures that are well below normal will plunge into much of the nation beginning in the Northern Plains, and pushing all the way into Florida by mid-week", it added.
If we only get down into the low 40s, the last time we hit those temperatures was pretty recent, on Sunday (Nov10th)- when we woke up to 40°. St. Louis metro will likely see rain ongoing for the morning commute. Worcester and Boston likely break the coldest high on record with highs in the low 30s.
"We're expecting some heavy snow from around Lake Erie into western NY and northern New England, where they could see between 6 and 12 inches", he said. There remains some uncertainty with exactly how long we will see the wintry weather because of how quickly dry air filter in behind the front.
MONDAY NOON: Rain will be mixing with snow in NW Arkansas with temperatures near freezing. The NWS warns of slippery road conditions. The system snow moves out later in the afternoon, about the time the lake-effect snow starts kicking in. As of now, temperatures sit in the middle 20s for most. Lake effect snow may be heavy at times and will continue into Wednesday morning before flow shifts any lingering bands out over Lake Erie. Temperatures will be staying a good 10-15 degrees below average through the next 7 days.
According to Birk, the lows on Tuesday could drop into the single digits or low teens in Illinois, Wisconsin and Iowa, with highs climbing no further than the low 20s.