Severe Weather History


Hazard archive · 1950 — present

Flash Flood in Comal County, Texas

135

Recorded events

6

Direct deaths

820

Direct injuries

$63.8M

Property damage

Flash Flood in Comal County, Texas: 135 recorded events between 1997 and 2025. The strongest on record measured 0. That places the county #93 nationally and #15 statewide for this hazard.

Decade by decade

Flash Flood in Comal County, Texas: events per decade

Flash Flood in Comal County, Texas: recorded events per decade
Flash Flood in Comal County, Texas: recorded events per decade

Reporting practice changed over time — early decades are undercounted, not calmer.

The busiest decade for flash flood in Comal County is the 2000s, when 66 of the county's 135 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 Comal County archive, flash flood makes up 32.6% of all recorded severe weather across 6 hazard types. Nationally the county sits at #93 for this hazard and #15 within Texas, putting it in the 97.0 percentile of all U.S. counties.

Seasonality

Events by month

2Jan
1Feb
5Mar
6Apr
23May
27Jun
20Jul
11Aug
16Sep
14Oct
10Nov
0Dec

Jun is the peak month for flash flood in Comal County with 27 recorded events, while Dec 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

DateLocationScaleDeathsInjuriesDamage
Oct 17, 1998COUNTYWIDE02800$50.0M
Oct 30, 2015SPRING BRANCH010$0
Oct 31, 2013NEW BRAUNFELS010$100K
Jun 9, 2010NEW BRAUNFELS010$10.0M
Mar 12, 2007BULVERDE010$0
Nov 15, 2001COUNTYWIDE0010$80K
Jun 22, 1997COUNTYWIDE0010$2.0M
Source: NOAA/NCEI Storm Events · dates UTC

Most recent

Latest recorded events

DateLocationMagnitudeDamage
Jul 5, 2025SPRING BRANCH0$0
Jul 1, 2025BULVERDE0$0
Jun 12, 2025BRACKEN0$0
Jun 12, 2025FISCHER0$0
May 28, 2025HONEY CREEK0$0
May 28, 2025ANHOLT0$0
May 28, 2025ANHOLT0$0
Oct 14, 2021NEW BRAUNFELS0$50K
Oct 14, 2021SPRING BRANCH0$0
Aug 2, 2021SPRING BRANCH0$0
Source: NOAA/NCEI Storm Events · dates UTC · recent entries may be preliminary

Other hazards here

More from Comal County

County overview →

From the record

What the reports say

Written by National Weather Service staff at the time of the event · public domain

Quick answers

Frequently asked

How many flash flood events are on record in Comal County, Texas?

135 flash flood events are recorded in Comal County between 1997 and 2025, causing 6 direct deaths.

What is the strongest flash flood recorded in Comal County?

The strongest flash flood on record in Comal County measured 0.

Where does the flash flood data for Comal 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 Comal County, Texas.” Severe Weather History. severeweatherhistory.com/county/texas/comal-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.


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