Biting cold greets us Tuesday morning as temperatures start out in the single digits to around 10 degrees throughout the Pioneer Valley. Those readings will represent temperatures some 20 degrees below normal for mid December. On top of that more snow is in the forecast and is due to arrive during the morning, continue through the afternoon and come to and end in the evening hours. Unfortunately, the heaviest period of snow is likely during the mid to late afternoon making for a slippery and slow commute home. The National Weather Service has a Winter Weather Advisory in effect from 7 am Tuesday until 6 pm Tuesday evening.
Low pressure moves out of the Ohio Valley and then tracks just south of Long Island and the New England south coast during Tuesday. The low will then track northeastward toward Nova Scotia Wednesday. With the bitter cold air in place we are once again set up for snow. This is not looking to be a significant storm but accumulating snow will occur and a few inches is likely. Early estimates of 1 to 3 inches have been upgraded to 2 to 5 inches, possibly up to 6 inches in the hilly terrain. Certainly enough snow to make for headaches on the roadways and as mentioned above the timing is not good as the evening commute will be a messy one.
The good news is that once the storm moves away we will see vast improvement in our weather Wednesday and Thursday as high pressure returns. Temperatures will begin to moderate some making it much more pleasant to be outdoors.
Another system brings unsettled conditions, possibly as early as midday Friday, likely into the weekend as well. Milder temperatures will be in place by then and any precipitation we do get will be rain initially, although what type of precipitation falls later in the weekend could be of the frozen variety as temperatures begin to cool off. More on that later in the week.
72 Hour Outlook:
Tonight: Fair skies and very cold. Increasing clouds. Lows in the single digits to 10 degrees. Diminishing northwest winds under 10 mph.
Tuesday: Cloudy, light snow breaks out during mid morning, becoming steadier and heavier by mid afternoon. Very cold early morning temperatures will only recover into the upper teens to low 20s in the afternoon. Northeast winds 5 to 15 mph.
Tuesday night: Snow tapers down during the evening hours and ends well before midnight. Cold, lows in the mid to upper teens. Northwest winds 5 to 15 mph.
Wednesday: Partly cloudy, windy and cold. Highs in the upper 20s to 30 degrees, feeling more like the upper teens and low 20s with the gusty northwest winds to 30 mph.
Wednesday night. Partly cloudy and continued cold. Lows in the upper teens to 20 degrees. West to northwest winds become southwest around 5 mph.
Thursday: Increasing clouds, becoming mostly cloudy into the overnight. Milder, highs in the mid 30s. Overnight lows in the low to mid 20s.