Severe Thunderstorm Warning Issued for Southern New Hampshire – Strong Winds, Hail Possible
Manchester, NH – August 13, 2025 –
The National Weather Service (NWS) has issued a severe thunderstorm warning for parts of southern New Hampshire, including east-central Hillsborough County and southwestern Rockingham County, in effect until 5:45 p.m. EDT.
Storm Hazards and Potential Impacts
The NWS warns of:
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Wind gusts up to 60 mph
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Quarter-size hail capable of damaging vehicles
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Potential damage to roofs, siding, and trees from high winds
Towns at risk include:
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Litchfield
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Auburn
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Londonderry
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Amherst
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Derry
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Manchester
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Merrimack
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Bedford
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Chester
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Mount Vernon
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Windham
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Salem
Residents in these areas should seek shelter immediately in an interior room on the lowest floor of a sturdy building.
Heat Wave Continues
This severe weather comes during New Hampshire’s fourth heat wave of 2025, with temperatures reaching into the 90s across most locations.
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Heat Advisory: In effect until 8 p.m. for parts of Strafford, Rockingham, and Hillsborough counties.
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Concord recorded its fourth straight day above 90°F, with 23 days at or above 90°F so far this year — already exceeding last year’s total.
Evening Storm Outlook
According to meteorologists:
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Scattered thunderstorms will continue through the early to mid-evening before clearing overnight.
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Marginal risk for severe weather across much of the state.
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Not all locations will receive rain, and fire danger remains high due to recent dry conditions.
Looking Ahead
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Thursday: Partly cloudy, warm, and humid with a few afternoon thunderstorms.
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Friday: Drier and more comfortable.
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Weekend: Sunny Saturday with highs in the 80s. Sunday could near 90°F before a cold front brings a chance of storms late in the day.
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