Merrimack County, NH — Severe Weather & Radar
No active severe-weather warnings for Merrimack County, NH right now. Live radar is below — set up alerts to get warned the moment one is issued.
One tap turns on push alerts for Tornado & Severe Thunderstorm Warnings that hit Merrimack County, NH — even when the app is closed. No account needed.
Or get them by email
No app or notifications: an email when a warning is issued for your town.
No account or app. You'll confirm by email first, and every email has a stop link.
Severe-weather outlook
No severe-weather risk is outlooked for Merrimack County, NH today.
3-day forecast
Forecast: NOAA National Blend of Models.
When is severe weather most likely near Merrimack?
In Merrimack County, severe thunderstorms are most common from June through August.
Damaging winds, hail, and localized flooding are the usual threats; tornadoes are less frequent than in the Plains or Southeast but do occur, often along summer cold fronts.
Based on long-term NOAA / NWS Storm Prediction Center climatology.
In Merrimack County, NH
Merrimack County, NH has an estimated 150,000 residents, plus 3 hospitals, 7 nursing homes, 62 schools, 7 mobile-home parks, 1 dialysis centers that could be in a storm's path. Atmostorm shows which of them fall inside an active warning polygon.
Emergency-management view: who & what is in the warned path →
Nearby areas
Live radar and active alerts for places near Merrimack:
Not an official source — always confirm with the National Weather Service at weather.gov. Data aggregated from NWS/SPC. Facility and population figures are decision-support estimates.