Forecasters say some of today's thunderstorms may pack a big punch, with winds strong enough to damage trees and power lines.

On Thursday at 1:30 p.m. a severe thunderstorm watch was issued by the National Weather Service in effect until 10 p.m. for Carbon, Lehigh, Monroe and Northampton counties.

A severe thunderstorm watch was issued by the National Weather Service on Thursday at 1:31 p.m. in effect until 10 p.m. for Bristol, Essex, Franklin, Hampden, Hampshire, Middlesex, Norfolk, Plymouth,