Thunderstorm Wind, Merrimack
- When
- May 12, 3:30 PM EST
- Where
- Merrimack County, Henniker
- Measured
- 50 kt (58 mph)
- Reported by
- TRAINED SPOTTER
- Coordinates
- 43.183, -71.833
Damaging Wind in New Hampshire, May 12, 2001
Thunderstorm winds blew down large branches in the town of Henniker causing a power outage. Scattered power outages were reported throughout the state.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
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.
What happened
The episode as NWS GYX wrote it up.
Thunderstorm winds blew down large branches in the town of Henniker causing a power outage. Scattered power outages were reported throughout the state.
What forecasters said that day
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Gray, ME wrote its last area forecast discussion before the first event at May 12, 1:40 PM EST, 1 hour 50 minutes earlier.
Area forecast discussion, May 12, 1:40 PM EST, 1 hour 50 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 240 PM EDT SAT MAY 12 2001 WRKZFP AVBL. UPR TROF MVG INTO NEW ENGLAND WITH CLSD LO FRMG OVR SRN NEW ENGLAND AND BCMG NRLY STATNRY THRFTR. AT SFC...LO PRES AND ASSCTD CDFNT MVG THRU FA TNGT AND INTO MARITIMES WHERE IT WILL STALL OVR NOVA SCOTIA SUN INTO MON...THEN RETROGRATE SLWLY THRFTR. FA WILL SEE UNSTTLED WX TNGT WELL INTO THE WEEK...TIMNG OF PCPN WILL BE PROB. THE END OF OUR IDEALISTIC EARLY SPRNG WX IS OVR. FCSTID = 5 .GYX... ME...NONE. NH...NONE.
The radar
The national radar mosaic for the moment the first event began.
Event by event
1 thunderstorm wind. Local standard time, as filed.
What these are
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Rip Current in California, May 12, 2001
- Lightning Strike in Louisiana, May 12, 2001
- Hail and Damaging Wind in Mississippi, May 12, 2001
- Lightning Strike in Texas, May 12, 2001
- Damaging Wind in Alabama, May 12, 2001
- Hail and Damaging Winds in North Carolina, May 12, 2001
- Damaging Wind in New York, May 12, 2001
- Damaging Winds and Lightning Strike in Massachusetts, May 12, 2001
- Tornadoes and Hail in Texas, May 12, 2001
- Hail in Florida, May 12, 2001
- Hail and Damaging Winds in South Carolina, May 12, 2001
- Excessive Heat in Massachusetts, May 12, 2001
More
Every storm in New Hampshire in 2001Every state in 2001This day in weather historyWarnings in New Hampshire, May 2001
Sources
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 2026-09-24. Each event’s entry at NCEI: 5245087.