A wave of low pressure will be sliding southeast of Cape Cod early Wednesday bringing a period of snow and mixed precipitation to the area. Interior northeast Massachusetts and the western suburbs will most likely see several inches of snow accumulation before this event winds down. The immediate coast and inside of Route 128/95 will have less snow as rain mixes in and then takes over by midday.
The onset of snow is expected in the early morning hours, with the intensity picking up around the morning commute through midday. You may be greeted with an inch or so of snow when you depart for your destination as temperatures hover in the upper 20s to 30 degrees early in the day. It will likely be a sloppy mess as we try to get to work or school. The precipitation winds down during the afternoon hours and ends Wednesday evening. After mixing with and changing to rain along the coast, precipitation may change back to all snow there before it ends.
As happens so often in these scenarios the areas inland that see very little mixing, or none at all, will have the highest snowfall totals. Meanwhile, those near the coast will see very little snow from this system, although some accumulation cannot be ruled out before the changeover occurs. Inside of Route 128/95 we expect 2 inches or less, perhaps washing away from rain. Areas between Routes 95 and 495 may see 2 to 4 inches of accumulation and beyond Route 495 perhaps 5 or 6 inches there. The mixing is expected to penetrate west of Route 128/95, possibly to the Route 495 belt by late in the event, before the cold air collapses back toward the coastline. Temperatures on Wednesday will climb to near 40 degrees along the coast to the low and mid 30s inland. Winds will not be a factor as they remain under 10 mph for the most part.
Partial clearing sets in overnight Wednesday, with lows tapering back to the upper 20s inland to low 30s on the shore. Winds do pick up on the backside of the departing low, reaching speeds of up to 15 to 20 mph from the west.
Partial sunshine returns Thursday and it will be chilly with brisk northwest winds gusting to near 30 mph. Highs in the upper 30s will feel more like the upper teens or 20s, depending on the gusty winds. There is a chance of a flurry or snow shower, especially inland, late in the day or evening as a cold front slides across the region. Behind the front we get a decent shot of cold air on Friday, with highs struggling to reach 30 degrees.