For today, expect mostly sunny skies and highs in the low to mid 20s, along with northwest winds at 5-15 mph gusting to 20-35 mph.
Now to our next significant subject: a major snowstorm is expected for Tuesday. I’ll elaborate further on a blog update this evening, but here’s the scoop briefly:
Timing: Snow begins and intensifies early Tuesday morning, continuing heavily through the day, before tapering off early Wednesday morning.
Impact: Heavy snow and strong winds will create poor visibility and whiteout conditions at times. Heavy snow will cause significant travel problems, especially at significant rates.
Uncertainty: There are a few keys to uncertainty here. If you’re in MetroWest to the Merrimack Valley and up into interior southeast New Hampshire, the highest certainty of amounts greater than a foot is there (hint: very likely, and still quite likely elsewhere in the 12-18″ zone). The western end is a bit more questionable. If the storm takes a track close to Nantucket, the 12-18″ zone may have to be nudged west a bit, and if it takes a track a bit more to the east, the 12-18″ zone may have to be nudged east a bit (this wouldn’t change amounts all that much, still more than a foot for MetroWest-Merrimack Valley-interior southeast NH). Speaking of the track, that’s going to be an issue to our south and east with mixing concerns for the south coast of RI and MA and especially Cape Cod and the Islands. If it takes a track closer to Nantucket, those areas will see mixing and thus less snow; if the track is more to the east, they could see a little bit of mixing – primarily Cape/Islands – while the rest of that area would likely be in for the snow. There is also a level of uncertainty about the upper limit of snow with this one – most spots are going to see a foot or more, but how high will it go and how localized or widespread will the highest amounts be? That’ll be refined in later forecasts.
Have a good day!