Active Weather Alerts
Severe Thunderstorm Warning
Issued: 8:37 PM Aug. 13, 2025 – National Weather Service
The National Weather Service in Boston/Norton has issued a * Severe Thunderstorm Warning for... West central Essex County in northeastern Massachusetts... Northeastern Worcester County in central Massachusetts... Northeastern Middlesex County in northeastern Massachusetts... * Until 530 PM EDT. * At 436 PM EDT, a severe thunderstorm was located over Groton, or 7 miles south of Nashua, moving northeast at 10 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to trees and power lines. * Locations impacted include... Lowell, Methuen, Billerica, Chelmsford, Andover, Dracut, Tewksbury, Westford, Pepperell, Tyngsborough, Groton, Lunenburg, Townsend, Littleton, Lancaster, Ayer, Shirley, Harvard, and Dunstable. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Large hail and damaging winds and continuous cloud to ground lightning is occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && HAIL THREAT...RADAR INDICATED; MAX HAIL SIZE...1.00 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...60 MPH
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