73
Recorded events
5
Direct deaths
10
Direct injuries
$21.6M
Property damage
Flash Flood in Blanco County, Texas: 73 recorded events between 1997 and 2024. The strongest on record measured 0. That places the county #316 nationally and #62 statewide for this hazard.
Decade by decade
Flash Flood in Blanco County, Texas: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flash flood in Blanco County is the 2000s, when 43 of the county's 73 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 Blanco County archive, flash flood makes up 29.3% of all recorded severe weather across 6 hazard types. Nationally the county sits at #316 for this hazard and #62 within Texas, putting it in the 89.8 percentile of all U.S. counties.
Seasonality
Events by month
Jun is the peak month for flash flood in Blanco County with 16 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
| Date | Location | Scale | Deaths | Injuries | Damage |
|---|---|---|---|---|---|
| Nov 15, 2001 | COUNTYWIDE | 0 | 1 | 10 | $100K |
| May 4, 2019 | BLANCO | 0 | 1 | 0 | $0 |
| May 24, 2015 | TWIN SISTERS | 0 | 1 | 0 | $0 |
| May 23, 2015 | BLANCO | 0 | 1 | 0 | $20.0M |
| May 3, 2007 | JOHNSON CITY | 0 | 1 | 0 | $0 |
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Nov 5, 2024 | TWIN SISTERS | 0 | $0 |
| May 2, 2024 | JOHNSON CITY | 0 | $0 |
| Oct 14, 2021 | TWIN SISTERS | 0 | $0 |
| May 8, 2019 | TWIN SISTERS | 0 | $0 |
| May 4, 2019 | BLANCO | 0 | $0 |
| May 4, 2019 | BLANCO | 0 | $0 |
| Jun 4, 2018 | CYPRESS MILL | 0 | $0 |
| Jun 4, 2018 | ROUND MTN | 0 | $0 |
| Jun 2, 2016 | JOHNSON CITY | 0 | $0 |
| May 27, 2016 | JOHNSON CITY | 0 | $0 |
Other hazards here
More from Blanco County
- Hail 124
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Thunderstorms produced heavy rain that caused flash flooding closing FM 1623 along the Blanco River. A 42 year old man died in his vehicle along the Blanco River near downtown Blanco. Flooding along the Blanco River in the town of Blanco was substantial. Water came up to the bottom of the Highway 281 bridge in Blanco. Water overtopped the Loop 163 bridge east of Blanco. The Blanco River overtopped County Road 165 and destroyed that bridge. Portions of the Blanco State Park were heavily damaged with cabins flooded. There were a total of 22 homes either destroyed or heavily damaged. Monetary losses were unavailable at the time of this writing but estimated to be more than several million dollars with losses to homes/structures and road infrastructure.
Rainfall redeveloped in the early morning hours over Blanco County, with amounts approaching 4 inches by 0500 CST and approaching 6 inches near 0700 CST. Heavy rainfall continued into the mid morning on the 15th, then began to diminish. By that time, general 5 to 6 inch rainfall was reported across the county, with isolated totals of up to 10 inches over much of the central part of the county and maximum amounts just over 12 inches near Twin Sisters. A 64-year old man was drowned when he tried to drive across a low water crossing over CR102. One other passenger in the vehicle was rescued when a passing motorist was able to throw him a rope. The victim was unable to hold onto the rope and was swept away.
Thunderstorms produced heavy rain that led to flash flooding. At approximately 8:07 PM local time, Blanco County Fire/EMS responded to a call about a vehicle that had been swept away due to flood waters on the Blanco River just east of the City of Blanco. One passenger was found downstream 800 yards of where the vehicle went into the water. She was rescued successfully but a second passenger, a 74 year old woman, was found deceased about 60 yards from the vehicle at approximately 10:56 PM.
Quick answers
Frequently asked
How many flash flood events are on record in Blanco County, Texas?
73 flash flood events are recorded in Blanco County between 1997 and 2024, causing 5 direct deaths.
What is the strongest flash flood recorded in Blanco County?
The strongest flash flood on record in Blanco County measured 0.
Where does the flash flood data for Blanco 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 Blanco County, Texas.” Severe Weather History. severeweatherhistory.com/county/texas/blanco-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.