55
Recorded events
0
Direct deaths
2
Direct injuries
$3.2M
Property damage
Flash Flood in Jefferson County, Kansas: 55 recorded events between 1996 and 2026. The strongest on record measured 0. That places the county #534 nationally and #12 statewide for this hazard.
Decade by decade
Flash Flood in Jefferson County, Kansas: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flash flood in Jefferson County is the 2000s, when 20 of the county's 55 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 Jefferson County archive, flash flood makes up 6.4% of all recorded severe weather across 8 hazard types. Nationally the county sits at #534 for this hazard and #12 within Kansas, putting it in the 82.5 percentile of all U.S. counties.
Seasonality
Events by month
May is the peak month for flash flood in Jefferson County with 12 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 2, 2005 | COUNTYWIDE | 0 | 0 | 2 | $2.0M |
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Apr 27, 2026 | BUCK CREEK | — | $10K |
| Apr 27, 2026 | WILLIAMSTOWN | — | $20K |
| Jul 14, 2023 | PERRY | 0 | $0 |
| May 18, 2022 | MC LOUTH ARPT | 0 | $0 |
| May 18, 2022 | THOMPSONVILLE | 0 | $0 |
| May 18, 2022 | MERIDEN | 0 | $0 |
| May 18, 2022 | BUCK CREEK | 0 | $0 |
| Jul 30, 2020 | HALF MOUND | 0 | $0 |
| Jul 30, 2020 | OZAWKIE | 0 | $0 |
| Jul 30, 2020 | HALF MOUND | 0 | $0 |
Other hazards here
More from Jefferson County
- Hail 378
- Thunderstorm Wind 353
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Heavy rains caused flash flooding . Two people were stranded by the flash flooding near McLouth and had to be rescued by boat. Three feet of water was in the Valley Falls High School gymnasium for a time. Eight homes had extensive flood damage.
Heavy rains produced flash flooding in southern Jefferson county. At Perry water was running over the street curbs. Many roads near Perry were covered by water. Near Williamstown the junction of highways 24 and 59 was barracaded due to rising water.
Water was reported over several roadways in the Valley Falls area. The cooperative observer located three miles southwest of Valley Falls reported 3.76 inches of rain as of 6:10am CST. The intersection of 142nd and K-4 had an estimated 6 inches of water over the roadway. Blue Mound Road north of K-16 was closed because of high water over the roadway. The Delaware River on the north side of Valley Falls was running two feet out of it's banks. A roadway near the intersection of Coal Creek Road and 170th was covered with one and a half feet of water.
Quick answers
Frequently asked
How many flash flood events are on record in Jefferson County, Kansas?
55 flash flood events are recorded in Jefferson County between 1996 and 2026, causing 0 direct deaths.
What is the strongest flash flood recorded in Jefferson County?
The strongest flash flood on record in Jefferson County measured 0.
Where does the flash flood data for Jefferson 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 Jefferson County, Kansas.” Severe Weather History. severeweatherhistory.com/county/kansas/jefferson-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.