A hot and unstable airmass was firmly in place across the Seacoast on the afternoon of August 14th. A weak frontal boundary triggered a few isolated thunderstorms, with one of the storms becoming severe across coastal Rockingham County.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS GYX wrote it up.
A hot and unstable airmass was firmly in place across the Seacoast on the afternoon of August 14th. A weak frontal boundary triggered a few isolated thunderstorms, with one of the storms becoming severe across coastal Rockingham County.
The Portland,ME radar (KGYX), 99 km away, was scanning. The volume nearest the first event began at 20:43 UTC.
3 thunderstorm wind. Local standard time, as filed.
Personal weather station KNHNEWHA17 gusted to 58 mph in New Castle.
A severe thunderstorm outflow boundary snapped a tree in half and downed others near Watsons Ln. on Mill Rd. partially blocking traffic in Hampton.
A severe thunderstorm outflow boundary downed a tree onto a home on the 70-block of Kings Hwy. in Hampton Beach.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New Hampshire in 2025Every state in 2025This day in weather historyWarnings in New Hampshire, August 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-30. Each event’s entry at NCEI: 1292549, 1292547, 1292548.