NWS Gray MEFF.W 0004August 3, 2026
Flash Flood Warning: Hillsborough, Merrimack, Rockingham and 1 more, NH
The National Weather Service office in Gray issued a flash flood warning for Hillsborough, Merrimack, Rockingham and 1 more in New Hampshire, which was in force until 11:15 a.m. local time on August 3. It was the 4th flash flood warning the NWS office in Gray issued in 2026. New Hampshire had 2 flash flood warnings in August 2026, against 3 in an average August of 2008-2025 (New Hampshire's flash flood warnings by year).
ExpiredWarning
In force for 3.9 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Gray ME
- Area
- Hillsborough, Merrimack, Rockingham and 1 more
- State
- New Hampshire
- Level
- Warning
- Issued
- 7:21 a.m. EDT, August 3, 2026
- Expires
- 11:15 a.m. EDT, August 3, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KGYX FF.W 0004
- Official source
- National Weather Service: the notice at its source
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
FFWGYX The National Weather Service in Gray has issued a * Flash Flood Warning for... Southeastern Merrimack County in central New Hampshire... Southwestern Strafford County in central New Hampshire... Southern Hillsborough County in southern New Hampshire... Rockingham County in southern New Hampshire... * Until 1115 AM EDT. * At 721 AM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2.5 inches of rain have fallen. The expected rainfall rate is 1 to 3 inches in 1 hour. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Manchester, Nashua, Derry, Merrimack, Durham, Exeter, Salem, Northwood and Bedford. This includes the following highways... Interstate 93 between mile markers 1 and 30. Interstate 293 between mile markers 1 and 11.
What the agency told people to do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.