Starts As Snow, Ends As Rain
The National Weather Service has issued a winter weather advisory for a messy storm that is coming our way tomorrow.
It's a hard one to forecast, because rain/snow lines are tough to call in advance. I think the WWA is more for me in Buzzards Bay than for you in, say, Orleans. The good stuff is forecast for North Massachusetts, and the weakest will be Cape Cod. We get jobbed on that sort of stuff now and then.
A day away, I see northern Plymouth County getting 2 inches, Buzzards Bay getting an inch, maybe Hyannis getting a half/quarter inch, and Chatham getting a coating. Whatever snow you're looking at should turn to rain after dark, as warm air is pulled up into the storm. Any gains in the snowpack (just kidding) should be erased by the rain.
The fun should start Wednesday afternoon. We could still be getting rained on Thursday, and- if we're lucky, we can get some flurries as the storm pulls away.
If you have to go up into the mainland, you could see some messiness Wednesday night and Thursday morning. They'll be more along the 4 inches the advisory I linked to speaks of. The jackpot will be North MA/Southern NH, who may score 10" of snow and a nasty ice coating. They actually have a winter STORM watch.
The roads could be messy at any point during this storm, especially during the snow/ice part. No crazy winds are forecast, so don't flee from the coastline or anything. I wouldn't waste this many words on a weak storm in a real winter.
We'll be back tomorrow with an update and some radar shots. We're good like that.