86
Recorded events
0
Direct deaths
0
Direct injuries
$109K
Property damage
Flash Flood in Laramie County, Wyoming: 86 recorded events between 2000 and 2025. The strongest on record measured 0. That places the county #235 nationally and #1 statewide for this hazard.
Decade by decade
Flash Flood in Laramie County, Wyoming: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flash flood in Laramie County is the 2010s, when 56 of the county's 86 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 Laramie County archive, flash flood makes up 5.4% of all recorded severe weather across 8 hazard types. Nationally the county sits at #235 for this hazard and #1 within Wyoming, putting it in the 92.4 percentile of all U.S. counties.
Seasonality
Events by month
Jul is the peak month for flash flood in Laramie County with 40 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 24, 2025 | ARCOLA | 0 | $0 |
| Jul 24, 2025 | CHEYENNE | 0 | $0 |
| Jul 23, 2025 | (CYS)CHEYENNE AIRPORT | 0 | $0 |
| Jul 23, 2025 | CHEYENNE | 0 | $0 |
| Jul 23, 2025 | CHEYENNE | 0 | $0 |
| Jun 20, 2024 | CARPENTER | 0 | $0 |
| Aug 3, 2023 | CHEYENNE | 0 | $0 |
| Aug 1, 2023 | CHEYENNE | 0 | $0 |
| Jul 20, 2023 | (CYS)CHEYENNE AIRPORT | 0 | $0 |
| Jul 20, 2023 | (CYS)CHEYENNE AIRPORT | 0 | $0 |
Other hazards here
More from Laramie County
- Hail 1,104
- Thunderstorm Wind 233
- Tornado 128
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Heavy rains fell over parts of western Laramie county west of Cheyenne, with estimatesof 4 to 6 inches over an area southwest of Federal, WY. Some flooding was reported onHappy Jack Road, with parts of county road 109 washed out.
A thunderstorm produced very heavy rain over far western Laramie county. Floodwaters producedsevere wash-away damage to county roads 110 and 110-A near Happy Jack Road with water reported to have flowed almost a foot deep over Happy Jack Road.
Flooding was reported at the Ames Underpass, the 2200 block of E 16th Street and Hynds Blvd and 2nd Ave. The Murdoch's parking lot along E Lincolnway was flooded. The public reported basement flooding in northwest Cheyenne.
Quick answers
Frequently asked
How many flash flood events are on record in Laramie County, Wyoming?
86 flash flood events are recorded in Laramie County between 2000 and 2025, causing 0 direct deaths.
What is the strongest flash flood recorded in Laramie County?
The strongest flash flood on record in Laramie County measured 0.
Where does the flash flood data for Laramie 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 Laramie County, Wyoming.” Severe Weather History. severeweatherhistory.com/county/wyoming/laramie-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.