169
Recorded events
2
Direct deaths
0
Direct injuries
$14.8M
Property damage
Flash Flood in Fairfield County, Connecticut: 169 recorded events between 1996 and 2025. The strongest on record measured 0. That places the county #58 nationally and #1 statewide for this hazard.
Decade by decade
Flash Flood in Fairfield County, Connecticut: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flash flood in Fairfield County is the 2020s, when 66 of the county's 169 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 Fairfield County archive, flash flood makes up 20.7% of all recorded severe weather across 9 hazard types. Nationally the county sits at #58 for this hazard and #1 within Connecticut, putting it in the 98.1 percentile of all U.S. counties.
Seasonality
Events by month
Sep is the peak month for flash flood in Fairfield County with 51 recorded events, while Feb 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 |
|---|---|---|---|---|---|
| Aug 18, 2024 | LYONS | 0 | 1 | 0 | $100K |
| Sep 6, 2008 | WINNIPAUK | 0 | 1 | 0 | $0 |
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Jul 9, 2025 | DARIEN | 0 | $0 |
| Aug 18, 2024 | REDDING | 0 | $0 |
| Aug 18, 2024 | SANDY HOOK | 0 | $100K |
| Aug 18, 2024 | STEVENSON | 0 | $50K |
| Aug 18, 2024 | SHELTON | 0 | $100K |
| Aug 18, 2024 | AGUA VISTA | 0 | $0 |
| Aug 18, 2024 | MONROE | 0 | $0 |
| Aug 18, 2024 | RIVERSIDE | 0 | $50K |
| Aug 18, 2024 | HAWLEYVILLE | 0 | $0 |
| Aug 18, 2024 | REDDING | 0 | $0 |
Other hazards here
More from Fairfield County
- Thunderstorm Wind 459
- Hail 78
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
A homeless man was swept down the Norwalk River from his home under the Cross Street Bridge. His body was found at 8:15 am Sunday morning off of Chimon Island, just outside Norwalk Harbor. The medical examiner determined the death was consistent with drowning with a boat propeller injury occurring after death.
Flash flooding of many streets and basements occurred in Stamford, Norwalk, and New Canaan. Damage occurred to several hundred homes in the Darien and Stamford areas.||Storm Total Rainfall amounts of 5.40 inches was measured at New Canaan and 5.10 inches at Stamford by the Automated Weather Station.|
Multiple roads were closed due to flooding in Bridgeport including the intersections of Bishop Avenue and Connecticut Avenue, Lincoln Avenue and Arlington Street, Gregory Street and Columbia Street, East Washington Street and East Main Street, and Seaview Avenue at the I-95 exit ramp.
Quick answers
Frequently asked
How many flash flood events are on record in Fairfield County, Connecticut?
169 flash flood events are recorded in Fairfield County between 1996 and 2025, causing 2 direct deaths.
What is the strongest flash flood recorded in Fairfield County?
The strongest flash flood on record in Fairfield County measured 0.
Where does the flash flood data for Fairfield 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 Fairfield County, Connecticut.” Severe Weather History. severeweatherhistory.com/county/connecticut/fairfield-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.