51
Recorded events
0
Direct deaths
0
Direct injuries
$34.2M
Property damage
Flash Flood in Norfolk County, Massachusetts: 51 recorded events between 1996 and 2025. The strongest on record measured 0. That places the county #591 nationally and #6 statewide for this hazard.
Decade by decade
Flash Flood in Norfolk County, Massachusetts: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flash flood in Norfolk County is the 2020s, when 21 of the county's 51 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 Norfolk County archive, flash flood makes up 9.1% of all recorded severe weather across 8 hazard types. Nationally the county sits at #591 for this hazard and #6 within Massachusetts, putting it in the 80.7 percentile of all U.S. counties.
Seasonality
Events by month
Jul is the peak month for flash flood in Norfolk County with 18 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.
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Jul 10, 2025 | WEYMOUTH | 0 | $0 |
| Jul 10, 2025 | BRAINTREE | 0 | $0 |
| Jul 10, 2025 | WEYMOUTH | 0 | $0 |
| Jul 10, 2025 | QUINCY | 0 | $0 |
| Jul 10, 2025 | MILTON VLG | 0 | $0 |
| Jul 10, 2025 | MILTON | 0 | $0 |
| Jul 10, 2025 | NORTH RANDOLPH | 0 | $0 |
| Jul 10, 2025 | SHARON | 0 | $0 |
| Jul 10, 2025 | BRAINTREE | 0 | $0 |
| Jul 10, 2025 | WALPOLE | 0 | $0 |
Other hazards here
More from Norfolk County
- Thunderstorm Wind 250
- Flood 86
- Hail 82
- Lightning 56
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
A Flash Flood emergency occurred, with considerable damage in the vicinity of Norwood Hospital. Severe flooding, more than 4 feet deep, occurred in the basement of the hospital. The entire pharmacy inventory was destroyed. One hundred patients had to be evacuated. Numerous cars were submerged in the parking lot, which, albeit, is in a 'bowl' not designed with flooding in mind. Damage to the hospital was estimated at $20,000,000. In addition, emergency management officials said that approximately 250 homes suffered flood damage.
A complex of showers and thunderstorms developed over the Wellesley/Needham area. These storms moved very slowly, if at all, producing three to four inches of rain over the region in 1 to 2 hours time. This resulted in widespread flash flooding across both cities. Several streets, including a few major highways were closed due to flooding including: Washington Street, Route 9, Route 16, Route 128 at exit 19, Great Plain Avenue, and Weston Road. Many cars were stuck in flood waters on these roads and across intersections. Numerous basements also were flooded in this region.
A car was trapped in floodwaters on Independence Avenue in Quincy. In Weymouth, Fogg Street was flooded with several inches of water at the entrance to the South Shore Emergency Room entrance. Columbian Street at Nevin Road was flooded with four feet of water. Bodwell Drive in Avon was flooded with several cars stuck in flood waters. Several feet of water on Route 37 in Braintree near the Mutual gas station closed the road. A car was stuck in flood waters at the intersection of Union Street and Grossman Drive. In Stoughton, three to four inches of water flooded the travel lanes on Route 27.
Quick answers
Frequently asked
How many flash flood events are on record in Norfolk County, Massachusetts?
51 flash flood events are recorded in Norfolk County between 1996 and 2025, causing 0 direct deaths.
What is the strongest flash flood recorded in Norfolk County?
The strongest flash flood on record in Norfolk County measured 0.
Where does the flash flood data for Norfolk 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 Norfolk County, Massachusetts.” Severe Weather History. severeweatherhistory.com/county/massachusetts/norfolk-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.