A tornado watch has been issued for Berkshire County by the National Weather Service, effective until 11 p.m. Tuesday night.
The watch, issued by the Storm Prediction Center in Norman, Okla., comes as heavy rain and wind gusts up to 60 miles per hour are expected to lash the Bay State later on Tuesday and overnight.
Thunderstorms - and even a tornado - are possible in the western part of the state, said meteorologist Alan Dunham.
"We can't rule them out," he said. "There is going to be a lot of instability."
The weather service issued a high wind warning for Berkshire County, saying winds could gust up to 60 miles per hour, and a wind advisory for the rest of Massachusetts, saying winds could gust to 45 to 55 miles per hour.
The service warned of the possibility of fallen trees and tree limbs and power outages.
The advisory is in effect from 4 p.m. until midnight in Western New England and from 8 p.m. to 6 a.m. Wednesday near the Worcester hills and along the coast.
Winds were whipping across the Blue Hills at up to 42 miles per hour by mid afternoon, while winds in Boston gusted up to 37 miles per hour.
A cold front moving into the region will also bring buckets of rain. boston.com