95
Recorded events
8
Direct deaths
529
Direct injuries
$9.1M
Property damage
Flash Flood in Guadalupe County, Texas: 95 recorded events between 1997 and 2025. The strongest on record measured 0. That places the county #187 nationally and #38 statewide for this hazard.
Decade by decade
Flash Flood in Guadalupe County, Texas: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flash flood in Guadalupe County is the 2000s, when 60 of the county's 95 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 Guadalupe County archive, flash flood makes up 26.0% of all recorded severe weather across 7 hazard types. Nationally the county sits at #187 for this hazard and #38 within Texas, putting it in the 94.0 percentile of all U.S. counties.
Seasonality
Events by month
Jun is the peak month for flash flood in Guadalupe 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.
Significant events
Deadliest on record
| Date | Location | Scale | Deaths | Injuries | Damage |
|---|---|---|---|---|---|
| Oct 17, 1998 | COUNTYWIDE | 0 | 4 | 500 | $5.0M |
| Nov 15, 2001 | COUNTYWIDE | 0 | 1 | 5 | $80K |
| Mar 10, 2017 | MARION | 0 | 1 | 0 | $0 |
| May 25, 2013 | SENERTZ | 0 | 1 | 0 | $0 |
| Mar 12, 2007 | SEGUIN | 0 | 1 | 0 | $0 |
| Jun 22, 1997 | COUNTYWIDE | 0 | 0 | 20 | $300K |
| Sep 5, 2001 | NORTH PORTION | 0 | 0 | 4 | $80K |
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Jul 5, 2025 | SULLIVAN | 0 | $2.5M |
| Jun 12, 2025 | SCHERTZ | 0 | $0 |
| Jun 12, 2025 | SEGUIN GUADALUPE ARP | 0 | $0 |
| Oct 14, 2021 | SEGUIN | 0 | $0 |
| Oct 14, 2021 | MARLONE | 0 | $0 |
| Mar 28, 2018 | GERONIMO | 0 | $0 |
| Apr 11, 2017 | MC QUEENEY | 0 | $0 |
| Mar 10, 2017 | MARION | 0 | $0 |
| Aug 21, 2016 | DUGGER | 0 | $0 |
| Jun 2, 2016 | CIBOLO KARDYS ARPT | 0 | $0 |
Other hazards here
More from Guadalupe County
- Thunderstorm Wind 129
- Hail 110
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Rainfall through the late afternoon brought totals across the county to 2 to 3 inches, with isolated amounts in the Seguin area to near 6 inches. Widespread flash flooding swept cars into low water crossings across the county. The occupants of a mobile-home park were forced to evacuate when flood waters threatened their area. Some buildings of the Schertz-Cibolo-Universal City school district were flooded. A 19-year old woman was drowned after the car she was riding in became stranded at a low water crossing across Geronimo Creek. The driver was rescued. Another vehicle was stalled in the deep water at the same time, but all occupants of that vehicle were able to be rescued.
Thunderstorms across the northern half of Guadalupe County produced general 2 inch rainfall with up to 6 inches near Kingsbury. Flash flooding closed FM20 and FM621, among many other area roads through the early morning hours. Three men and a woman were attempting to drive through a low area on Laubach Road around 0120 am CST on Laubach Road that was experiencing flash flooding from nearby Geronimo Creek. Their car stalled and the three men attempted to push the car to safety while the woman steered. Unfamiliar with this area, and in the dark, they became confused and moved the car the wrong direction, causing it to be swept into Geronimo Creek. The men escaped the flash flooding safely but the young woman was swept downstream and drowned.
Thunderstorms produced heavy rain while slowly moving west across Guadalupe County. Rainfall totals of 4 to 7 inches were recorded with radar estimated totals as high as 9 inches in the Seguin area. The high rain rates caused flash flooding of low-lying and poor drainage areas, leading to at least a dozen water rescues and numerous road closures throughout the city and along I-10. Rapid rises were reported along Walnut and Geronimo Creek. 3 businesses and 2 homes were flooded with 6 to 12 inches of water. The worst flooding was experienced along US-90 Alternate where widespread inundation was observed. Several city parks and recreational facilities sustained damage. Flooding caused at least $2.5 million in damage to public infrastructure.
Quick answers
Frequently asked
How many flash flood events are on record in Guadalupe County, Texas?
95 flash flood events are recorded in Guadalupe County between 1997 and 2025, causing 8 direct deaths.
What is the strongest flash flood recorded in Guadalupe County?
The strongest flash flood on record in Guadalupe County measured 0.
Where does the flash flood data for Guadalupe 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 Guadalupe County, Texas.” Severe Weather History. severeweatherhistory.com/county/texas/guadalupe-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.