Light Wintry Mix Tuesday-Wednesday Ushers in Milder Week: Next Major Threat Looms End of Month
Messy Mid Week On Tap
Synoptic Overview
As is often the case, there will be a price to pay in order to transition the pattern from the very cold conditions of this past week. Indeed, the retreating arctic cold will remain in place long enough to ensure a wintery start to mid week precipitation, as implied last week. A modest parcel of energy will be weakening on approach as it breaks off from the amplifying western trough and around the periphery of the building Western Atlantic ridge in response to the deep Western trough.
Note the compressed flow between the departing polar vortex lobe that supplies the cold this weekend and the building western Atlantic ridge that triggers the warm up next week, which will act to shear the approaching wave apart. However, it may deposit a light snowfall over the northern half of the region and thus cause some slight travel delays from Tuesday into Wednesday before it dissipates and warmer air moves in.
Anticipated Storm Evolution
Mixed precipitation should enter the forecast area late Tuesday afternoon and evening.
And continues as occasional light snow north of the Mass pike and mixed precipitation south of the Mass pike overnight into Wednesday morning.
Before ending as rain showers Wednesday afternoon.
And resuming as rainfall across the entire region with the next more potent wave on Thursday.
FIRST CALL:
A final update will be issued on Tuesday.
Looking Ahead to Major Late Month Storm Potential
The first of two potential major storm windows this winter was identified last fall as the period between January 23 and February 6. And while it is far from certain that this potential will be realized, there is strong agreement amongst the three main ensemble suites that a potent western ridge will amplify right in the the middle of the identified window of opportunity, on approximately January 30.
More updates will be provided as needed with respect to this potential over the course of the next week.