50
Recorded events
0
Direct deaths
0
Direct injuries
$106.4M
Property damage
Flash Flood in Cass County, North Dakota: 50 recorded events between 1996 and 2025. The strongest on record measured 0. That places the county #606 nationally and #2 statewide for this hazard.
Decade by decade
Flash Flood in Cass County, North Dakota: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flash flood in Cass County is the 2000s, when 26 of the county's 50 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 Cass County archive, flash flood makes up 4.4% of all recorded severe weather across 8 hazard types. Nationally the county sits at #606 for this hazard and #2 within North Dakota, putting it in the 80.3 percentile of all U.S. counties.
Seasonality
Events by month
Jun is the peak month for flash flood in Cass County with 15 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 |
|---|---|---|---|
| Aug 6, 2025 | (FAR)HECTOR INTL ARP | 0 | $0 |
| Aug 6, 2025 | (FAR)HECTOR INTL ARP | 0 | $0 |
| Aug 6, 2025 | COTTER | 0 | $0 |
| Jun 21, 2025 | WEST FARGO | 0 | $0 |
| Aug 6, 2023 | COTTER | 0 | $0 |
| Aug 6, 2023 | (FAR)HECTOR INTL ARP | 0 | $0 |
| Jul 9, 2019 | FARGO | 0 | $10K |
| Sep 4, 2014 | CASSELTON | 0 | $1K |
| Sep 4, 2014 | FARGO | 0 | $15K |
| Jun 26, 2013 | CASSELTON | 0 | $5K |
Other hazards here
More from Cass County
- Hail 494
- Thunderstorm Wind 418
- Tornado 109
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
After 5 to 7 inches of rain fell across the West Fargo area, flash flooding occurred in low lying neighborhoods. The Meadow Ridge area suffered quite a bit of damage, with numerous basements flooded. Many streets and cars were also flooded.
3 to 5 inches of rain fell in less than 3 hours across portions of Fargo. The Fargo airport reported 3.03 inches of rain. The western edge of the city was hit the hardest. The interchange between Interstates 29 and 94 was closed due to high water. Several garages in the basement levels of apartment buildings flooded. Major underpasses around the city also had to be closed.
3 to 5 inches of rain fell in less than three hours, resulting in rapid flooding problems across West Fargo. Several parking lots and low areas filled with water, covering some cars. Water also covered a few streets and filled several basements with 3 1/2 feet of water. Power went out for most of West Fargo, causing sewer and sump pump failure.
Quick answers
Frequently asked
How many flash flood events are on record in Cass County, North Dakota?
50 flash flood events are recorded in Cass County between 1996 and 2025, causing 0 direct deaths.
What is the strongest flash flood recorded in Cass County?
The strongest flash flood on record in Cass County measured 0.
Where does the flash flood data for Cass 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 Cass County, North Dakota.” Severe Weather History. severeweatherhistory.com/county/north-dakota/cass-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.