Alert archive / Texas / Flash Flood Warnings in 2026
Flash Flood Warning 24, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at May 26, 2026, 10:02 PM CDT for Bexar County, Texas. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 26, 2026, 10:02 PM CDT (03:02 UTC)
- Expired
- May 27, 2026, 1:15 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Bexar County, TX
The radar
The Austin/San Antonio radar (KEWX), 42 km from the middle of the area, began a volume at 03:02 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 26, 11:30 PM CDT | FLASH FLOOD | San Antonio, TX | Reports of numerous low water crossings closed across Bexar County. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this flash flood warning; the first came 88 minutes after it went out.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 3.0 hours before the alert went out and 222 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1734 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 877 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 11.2
The text
As transmitted.
713
WGUS54 KEWX 270302
FFWEWX
TXC029-270615-
/O.NEW.KEWX.FF.W.0024.260527T0302Z-260527T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
1002 PM CDT Tue May 26 2026
The National Weather Service in Austin/San Antonio has issued a
* Flash Flood Warning for...
Central Bexar County in south central Texas...
* Until 115 AM CDT.
* At 1002 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. Additional rainfall amounts up to 1 inch are possible
in the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
San Antonio, Schertz, Converse, Universal City, Live Oak, Selma,
San Antonio Int Airport, Stinson Municipal Airport, Randolph AFB,
Leon Valley, Helotes, Kirby, Alamo Heights, Windcrest, Terrell
Hills, Shavano Park, Hollywood Park, Cross Mountain, Olmos Park
and St. Hedwig.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Move to higher ground now. Act quickly to protect your life.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 2956 9830 2955 9827 2945 9817 2917 9841
2932 9871 2961 9871 2968 9841 2958 9830
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
05What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Austin/San Antonio, TX wrote its last area forecast discussion before this flash flood warning went out at May 26, 8:42 PM CDT, 1 hour 20 minutes earlier. Its key messages:
- Active and unsettled weather pattern this afternoon through Wednesday with localized flooding issues possible.
- Warmer and drier weather forecast for latter part of the work week
- Rain chances return over the weekend and early next week as we turn the calendar to June.
Area forecast discussion, May 26, 8:42 PM CDT, 1 hour 20 minutes before
Area Forecast Discussion National Weather Service Austin/San Antonio TX 842 PM CDT Tue May 26 2026 ...New UPDATE... .KEY MESSAGES... - Active and unsettled weather pattern this afternoon through Wednesday with localized flooding issues possible. - Warmer and drier weather forecast for latter part of the work week - Rain chances return over the weekend and early next week as we turn the calendar to June. && .UPDATE... Issued at 837 PM CDT Tue May 26 2026 We adjusted/expanded/extended the Severe Thunderstorm Watch. We cancelled the northern and western portions. We expanded it to the east from Bexar to Lavaca and extended it until 6 AM. This will likely be canceled before then, but the watch extends to the coast into the Corpus Christi CWA. A line of thunderstorms is moving toward the east through Medina and Frio Counties and will continue for the next few hours. && .SHORT TERM... (Tonight through Wednesday night) Issued at 1256 PM CDT Tue May 26 2026 As of 1 PM CDT, the line of storms that extends from the San Angelo's area to the southwest into the Midland's area is producing heavy rain with rain rates of 1 to 2 inches per hour. This trend is forecast to continue as the line pushes eastward this afternoon and evening. This activity is taking advantage of a mid to upper level trough axis moving across the Southern Plains/central Texas. As the day progresses, instability increases to help storms grow to strong and severe weather levels. All severe weather hazards are possible including very large hail of 2+ inches. Can't rule out an isolated tornado or two. A Level 2 of 5 (Storm Prediction Center) risk of severe thunderstorms highlights areas west of Highway 281 and Level 1 of 5 risk for severe thunderstorms east of Highway 281 through Wednesday morning. Also, WPC ERO Day 1 highlights all of South Central Texas at a Level 1 of 4 risk of excessive rainfall through Wednesday morning. As a matter of fact, we are expecting rainfall rates to be elevated as the convective line of storms moves across most of the local area through the period. Due to saturated soils or very wet grounds per last several days, a quick 1 to 3 inches could cause some sort of flooding issues across the area, especially over the Flood Watch area. The big concern with this line is that if slows down as it pushes through Rio Grande Plains, Southern Edwards Plateau, and Hill Country, then probabilities go up for isolated spots to get up to 5 inches of rainfall. Can't pinpoint the locations and therefore, anyone under the Flood Watch has equal opportunities. The Flood Watch is in effect from 4 PM through 8 AM Wednesday and takes all uncertainties into account. The most likely storm timing is mid/late afternoon and evening along the Rio Grande Plains, late evening through early overnight over the Hill Country and parts of the I-35 corridor, and overnight east of I-35 corridor and Coastal Plains. By noon Wednesday, most of the shower and thunderstorm activity should be concentrated east of I-35 corridor with rain chances diminishing and coming to an end during the evening. && .LONG TERM... (Thursday through next Tuesday) Issued at 1256 PM CDT Tue May 26 2026 Dry weather conditions are in store for Thursday and Friday for the most part. Can't rule out a few showers or even an isolated thunderstorms along and east of Highway 77 both afternoons. After a cooler day on Wednesday due to cloud cover and wet grounds, a warming trend starts for the latter portion of the week with highs in the upper 80s and lower 90s over most places with mid 90s along the Rio Grande Plains. Rain chances return over parts of South Central Texas especially areas along the Rio Grande Plains and Hill Country per latest guidance. The somewhat weather pattern continues into early next week with highs in the 80s and 90s. && .AVIATION... (00Z TAFS) Issued at 622 PM CDT Tue May 26 2026 Showers and thunderstorms will be the main concern for the next 6-12 hours. Storms have moved east of DRT and they should be free of convection for the rest of the night. The best timing in the Austin and San Antonio areas looks between 03Z and 07Z. Any storms will lower visibility. After 07Z there will be a continued low chance for showers until around sunrise. Any showers overnight will lower ceiling. All airports will be VFR Wednesday. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 70 84 70 88 / 80 50 30 20 Austin Bergstrom Intl Airport 71 84 71 88 / 90 60 30 20 New Braunfels Muni Airport 70 84 69 88 / 90 50 10 20 Burnet Muni Airport 68 81 68 85 / 80 50 20 10 Del Rio Intl Airport 69 89 71 91 / 70 10 10 0 Georgetown Muni Airport 69 82 69 86 / 80 50 30 20 Hondo Muni Airport 69 83 69 87 / 80 50 10 10 San Marcos Muni Airport 70 84 70 88 / 90 50 20 20 La Grange - Fayette Regional 72 82 70 87 / 80 60 20 40 San Antonio Intl Airport 71 84 71 88 / 90 40 20 10 Stinson Muni Airport 71 84 71 88 / 90 40 10 10 && .EWX WATCHES/WARNINGS/ADVISORIES... Flood Watch until 8 AM CDT Wednesday for TXZ171>173-183>192- 202>206. && SHORT TERM...17 LONG TERM....17 AVIATION...05
In the hours before
Local storm report, May 26, 9:00 PM CDT, 1 hour 2 minutes before
Preliminary Local Storm Report
National Weather Service Austin/San Antonio TX
900 PM CDT Tue May 26 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0845 PM Tstm Wnd Gst 9 N Pipe Creek 29.84N 98.95W
05/26/2026 M55 MPH Kerr TX Mesonet
Texas Tech Mesonet 9 SSW Comfort.
&&
MBLocal storm report, May 26, 9:06 PM CDT, 56 minutes before
Preliminary Local Storm Report
National Weather Service Austin/San Antonio TX
906 PM CDT Tue May 26 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0738 PM Tstm Wnd Gst 2 NW Batesville 28.97N 99.63W
05/26/2026 M79 MPH Zavala TX Storm Chaser
79 mph wind gust with a handheld anemometer.
&&
MBLocal storm report, May 26, 9:11 PM CDT, 51 minutes before
Preliminary Local Storm Report
National Weather Service Austin/San Antonio TX
911 PM CDT Tue May 26 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0900 PM Flash Flood 3 ENE Burnet 30.78N 98.19W
05/26/2026 Burnet TX Emergency Mngr
EM reports all low water crossings on CR 200
overtopped and impassable.
&&
CJMLocal storm report, May 26, 9:19 PM CDT, 43 minutes before
Preliminary Local Storm Report
National Weather Service Austin/San Antonio TX
919 PM CDT Tue May 26 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0840 PM Tstm Wnd Gst 2 ESE Hondo 29.34N 99.12W
05/26/2026 M51 MPH Medina TX Public
Personal weather station measured.
&&
MBSpecial weather statement, May 26, 9:29 PM CDT, 33 minutes before
Special Weather Statement
National Weather Service Austin/San Antonio TX
929 PM CDT Tue May 26 2026
TXZ187-204>207-219>222-224-270400-
Frio TX-Guadalupe TX-Karnes TX-Comal TX-Atascosa TX-Bexar TX-
De Witt TX-Medina TX-Bandera TX-Wilson TX-
929 PM CDT Tue May 26 2026
...Strong thunderstorms will impact portions of east central Medina,
southeastern Bandera, southwestern DeWitt, southwestern Guadalupe,
Karnes, southeastern Frio, Atascosa, Wilson, Bexar and southeastern
Comal Counties through 1100 PM CDT...
At 928 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Lakehills to Leming to 9 miles north of
Fort Ewell Site. Movement was east at 30 mph.
HAZARD...Wind gusts of 50 to 55 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
San Antonio, New Braunfels, Schertz, Seguin, Cibolo, Converse,
Universal City, Live Oak, Pleasanton, Selma, Floresville, Jourdanton,
Poteet, Kenedy, Karnes City, Poth, Yorktown, Charlotte, Stockdale,
and Christine.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
A Severe Thunderstorm Watch remains in effect until 600 AM CDT for
south central Texas.
&&
LAT...LON 2864 9834 2865 9897 2909 9869 2969 9898
2968 9810 2937 9784 2935 9786 2892 9742
2867 9778 2872 9792 2869 9801 2879 9810
2862 9833
TIME...MOT...LOC 0228Z 273DEG 25KT 2963 9888 2907 9846 2828 9907
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...55 MPH
62Special weather statement, May 26, 9:31 PM CDT, 31 minutes before
Special Weather Statement
National Weather Service Austin/San Antonio TX
931 PM CDT Tue May 26 2026
TXZ172-173-187-189>194-205>208-223-270400-
Bexar TX-Blanco TX-Caldwell TX-Williamson TX-Gonzales TX-Bandera TX-
Burnet TX-Lee TX-Guadalupe TX-Comal TX-Bastrop TX-Hays TX-Kendall TX-
Travis TX-
931 PM CDT Tue May 26 2026
...Strong thunderstorms will impact portions of east central Bandera,
eastern Guadalupe, Travis, central Kendall, southeastern Burnet,
Williamson, Caldwell, Hays, Blanco, Bastrop, northwestern Gonzales,
Lee, northwestern Bexar and Comal Counties through 1100 PM CDT...
At 931 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Holland to Timberwood Park. Movement was
east at 40 mph.
HAZARD...Wind gusts of 50 to 55 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Austin, Round Rock, New Braunfels, Cedar Park, Georgetown, San
Marcos, Pflugerville, Kyle, Seguin, Taylor, Buda, Boerne, Lockhart,
Elgin, Bastrop, Luling, Giddings, Smithville, Dripping Springs, and
Wimberley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
A Severe Thunderstorm Watch remains in effect until 600 AM CDT for
south central Texas.
&&
LAT...LON 3091 9783 3074 9727 3046 9715 3056 9696
3054 9692 3046 9690 3039 9679 3032 9674
3030 9667 3025 9668 3024 9674 3019 9676
3004 9702 3005 9703 2979 9732 2977 9730
2937 9783 2969 9809 2970 9893 3095 9790
TIME...MOT...LOC 0231Z 270DEG 36KT 3087 9748 2969 9849
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH
62The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 7:00 PM CDT | Severe Thunderstorm Warning | EWX | Kinney, Uvalde, Zavala | 60 min |
| May 26, 7:04 PM CDT | Special Weather Statement | EWX | Burnet | 41 min |
| May 26, 7:21 PM CDT | Special Weather Statement | EWX | Bandera, Blanco, Gillespie, Kendall | 54 min |
| May 26, 7:35 PM CDT | Areal Flood Advisory | EWX | Uvalde, Zavala | 3 hr |
| May 26, 7:35 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Williamson | 40 min |
| May 26, 7:37 PM CDT | Severe Thunderstorm Warning | EWX | Atascosa | 30 min |
| May 26, 7:42 PM CDT | Tornado Warning | EWX | Atascosa | 12 min |
| May 26, 7:46 PM CDT | Severe Thunderstorm Warning | EWX | Dimmit, Frio, Medina, Uvalde, Zavala | 59 min |
| May 26, 7:49 PM CDT | Flash Flood Warning | EWX | Burnet, Llano | 3 hr |
| May 26, 7:55 PM CDT | Flash Flood Warning | EWX | Atascosa | 3 hr |
| May 26, 8:03 PM CDT | Severe Thunderstorm Warning | EWX | Kendall, Kerr | 16 min |
| May 26, 8:08 PM CDT | Severe Thunderstorm Warning | EWX | Williamson | 17 min |
| May 26, 8:09 PM CDT | Areal Flood Advisory | EWX | Bandera, Gillespie, Kendall, Kerr, Llano | 3 hr |
| May 26, 8:15 PM CDT | Special Weather Statement | EWX | Bandera, Bexar, Blanco, Comal, Hays, Kendall and 2 more | 90 min |
| May 26, 8:25 PM CDT | Flash Flood Warning | EWX | Kendall, Kerr | 3 hr |
| May 26, 8:26 PM CDT | Special Weather Statement | EWX | Williamson | 79 min |
| May 26, 8:37 PM CDT | Severe Thunderstorm Warning | EWX | Atascosa, Bexar, Frio, Medina | 68 min |
| May 26, 8:47 PM CDT | Severe Thunderstorm Warning | EWX | Bandera, Bexar, Comal, Kendall, Kerr | 58 min |
| May 26, 8:53 PM CDT | Flash Flood Warning | EWX | Burnet, Williamson | 5 hr |
| May 26, 8:58 PM CDT | Flash Flood Warning | EWX | Blanco, Burnet | 3 hr |
| May 26, 9:22 PM CDT | Areal Flood Advisory | EWX | Bandera, Kendall | 3 hr |
| May 26, 9:29 PM CDT | Special Weather Statement | EWX | Atascosa, Bexar, Karnes, Wilson | 91 min |
| May 26, 9:31 PM CDT | Special Weather Statement | EWX | Bastrop, Blanco, Caldwell, Comal, Guadalupe, Hays and 4 more | 89 min |
| May 26, 9:39 PM CDT | Areal Flood Advisory | EWX | Atascosa, Bexar, Comal, Frio, Kendall, Medina | 3 hr |
| May 26, 9:48 PM CDT | Tornado Warning | EWX | Bexar, Comal, Guadalupe | 42 min |
| May 26, 10:21 PM CDT | Tornado Warning | EWX | Gonzales, Guadalupe | 28 min |
| May 26, 10:49 PM CDT | Flash Flood Warning | EWX | Comal, Guadalupe | 3 hr |
| May 26, 10:49 PM CDT | Severe Thunderstorm Warning | EWX | Caldwell, DeWitt, Fayette, Gonzales, Guadalupe, Lavaca | 56 min |
| May 26, 11:16 PM CDT | Tornado Warning | EWX | Fayette, Gonzales, Lavaca | 13 min |
| May 26, 11:28 PM CDT | Severe Thunderstorm Warning | EWX | Bastrop, Fayette, Lee | 77 min |
| May 26, 11:34 PM CDT | Special Weather Statement | EWX | DeWitt | 41 min |
| May 26, 11:37 PM CDT | Severe Thunderstorm Warning | EWX | DeWitt, Fayette, Gonzales, Lavaca | 68 min |
| May 27, 12:00 AM CDT | Severe Thunderstorm Warning | EWX | DeWitt, Lavaca | 45 min |
| May 27, 3:10 AM CDT | River Flood Warning | EWX | Williamson | 6 hr |
| May 27, 3:18 AM CDT | Special Weather Statement | EWX | Maverick | 42 min |
| May 27, 7:02 AM CDT | Areal Flood Advisory | EWX | Karnes | 118 min |
Nearby
Flash Flood Warnings in Texas, 2026Every flash flood warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.