Final Call for Snow to Rain Wednesday Night Into Thursday
No major Changes; Minor Snowfall Accumulations Expected
Synoptic Situation:
There are no significant changes for the forecasting rationale expressed in the First Call on Monday. In what has been a common theme during the boreal 2022-2023 winter season, energy is currently amplifying well to the west, which coupled with a rather mild antecedent airmass, causes any snowfall to rapidly transition to rain as the high pressure slides off of the coast and even milder air floods the region.
Expected storm evolution for Wednesday Night & Thursday:
Snowfall should begin to breakout over far southwestern portions of New England by early afternoon on Wednesday.
Snowfall will overspread the rest of the region over the course of the afternoon and begin to transition to rainfall across much of Connecticut, Rhode Island and south eastern Mass by the evening hours
And then rapidly mix with and change to rain across the remainder of the region by midnight.
Temperatures will rise overnight as the low moves inland and heavy rain continues with potential ponding in poor drainage areas, especially in locations to the north with relatively deep snowpack.
Then the rain tapers off amidst blustery conditions Thursday morning.
Final Call:
First Call, issued Monday, January 23 at 11am: