58
Recorded events
2
Direct deaths
1
Direct injuries
$18.9M
Property damage
Flash Flood in Cheshire County, New Hampshire: 58 recorded events between 2003 and 2024. The strongest on record measured 0. That places the county #490 nationally and #3 statewide for this hazard.
Decade by decade
Flash Flood in Cheshire County, New Hampshire: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flash flood in Cheshire County is the 2020s, when 37 of the county's 58 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.
Within the Cheshire County archive, flash flood makes up 10.2% of all recorded severe weather across 7 hazard types. Nationally the county sits at #490 for this hazard and #3 within New Hampshire, putting it in the 84.0 percentile of all U.S. counties.
Seasonality
Events by month
Jul is the peak month for flash flood in Cheshire County with 37 recorded events, while Jan is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.
Significant events
Deadliest on record
| Date | Location | Scale | Deaths | Injuries | Damage |
|---|---|---|---|---|---|
| Oct 9, 2005 | ALSTEAD | 0 | 2 | 0 | $10.0M |
| Aug 10, 2003 | CHESTERFIELD | 0 | 0 | 1 | $500K |
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| May 21, 2024 | DREWSVILLE | 0 | $0 |
| Jul 29, 2023 | DOLE JCT | 0 | $0 |
| Jul 14, 2023 | WESTMORELAND DEPOT | 0 | $0 |
| Jul 11, 2023 | ALSTEAD CENTER | 0 | $0 |
| Jul 11, 2023 | EAST ALSTEAD | 0 | $0 |
| Jul 10, 2023 | WESTMORELAND | 0 | $0 |
| Jul 10, 2023 | FOREST LAKE | 0 | $0 |
| Jul 9, 2023 | SOUTH STODDARD | 0 | $0 |
| Jul 9, 2023 | SWANZEY | 0 | $0 |
| Jul 9, 2023 | SWANZEY | 0 | $0 |
Other hazards here
More from Cheshire County
- Thunderstorm Wind 357
- Hail 103
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Jaffrey airport reported 6.9 in 18 hours, measuring 6 to 8 inches of rain in 24 hours. More than 15 roads were washed out, one of which lost a major culvert. Damage figures were estimated over $1 million mainly for damage to roads and bridges. There was a voluntary evacuation for 39 homes on Letourneau Drive off Nutting Road after a bridge was flooded by a small stream.
Two rounds of heavy rain impacted Keene on the evening of the 17th. The first round came around 9 PM causing some localized flash flooding. Shortly after midnight another round of heavy rainfall moved over the area resulting in another surge of floodwaters into the city. In all, over 80 residential basements flooded along with several businesses. A large sinkhole developed on Roxbury Street with severe damage. There were at least 2 evacuations, one on Wetmore Street and another at Boston Place.
The town of Richmond sustained over $200,000 in verified damage. Flooding with washouts on following roads: Fish Hatchery Rd, Tully Brook Rd, Honey Hill Rd, and NH Route 32 north of four corners. No rain reports were located in Richmond, but neighboring gages reported between 4 and 6 inches of rainfall within a 12 hour period. The heaviest rain came shortly after midnight with rates over 3 inches an hour.
Quick answers
Frequently asked
How many flash flood events are on record in Cheshire County, New Hampshire?
58 flash flood events are recorded in Cheshire County between 2003 and 2024, causing 2 direct deaths.
What is the strongest flash flood recorded in Cheshire County?
The strongest flash flood on record in Cheshire County measured 0.
Where does the flash flood data for Cheshire County come from?
All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.
Cite this page
“Flash Flood in Cheshire County, New Hampshire.” Severe Weather History. severeweatherhistory.com/county/new-hampshire/cheshire-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.