Here is the latest on the storm. Apologies for the brevity, I have been studying for physics and math midterm exams taking place tomorrow.
Precipitation Types and Timing
Mix of snow, sleet, rain, and freezing rain; most of the snow and sleet stuff falls as sleet. Freezing rain is going to stay well inland; while other areas go from snow/sleet to a period of heavy rain. The heaviest precipitation is overnight tonight into tomorrow’s morning commute, tapering late morning; there will be rain at times throughout Tuesday into Tuesday night.
Snow and sleet: I have gone up a bit here. Most of this is sleet.
Freezing rain: A bit of a wild card factor; this has a chance at going up or down.
Wintry precipitation will cause travel problems such as slick roads and sidewalks. In areas with freezing rain, scattered power outages are also possible.
A flood watch is also in effect for eastern MA, for possible flooding of urban areas. Do not drive your vehicle where water covers the road; heavy rain will impact tomorrow’s commute.
Strong winds – northeast 20-40 mph with gusts of 45-65 mph – may cause difficulties as well, including perhaps some tree damage and isolated power outages. Wind advisories are in effect (with high wind warnings for Cape Ann as well as coastal southeast MA).
Precipitation type across north-central and western MA is still a question, and slight temperature differences at various atmospheric levels – mainly the low levels – could make a major difference in precip type and associated impacts.
Also for precip type, the HRRR depicts mixed sleet and rain well into the rush hour north and west of Route 95/128 in Massachusetts. If a similar scenario verifies, the sleet would be an added mess to already heavy rain. Nonetheless, school delays in northeast MA are still highly unlikely, but this is the wild card factor for northeast MA.
School impacts appear likely well inland, in the 3-6″ snow/sleet area as well as the freezing rain area. Impacts appear unlikely for central MA, and very unlikely for northeast MA, with Boston and points south having practically zero chance of anything. Everyone please do your homework, though, even if it seems likely.
All in all, use caution and stay safe!