Alert archive / Texas / Flash Flood Warnings in 2025

Flash Flood Warning 48, NWS Austin/San Antonio, TX

July 4, 2025Comal County, Kendall County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jul 4, 2025, 12:02 PM CDT for Comal County, Kendall County, Texas. It was in force for 18 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 4, 2025, 12:02 PM CDT (17:02 UTC)
Expired: Jul 5, 2025, 6:00 AM CDT
In force: 18 hr
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

Counties Comal County, TX, Kendall County, TX

The radar

The Austin/San Antonio radar (KEWX), 55 km from the middle of the area, began a volume at 17:03 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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

Del Rio, TX (KDRT), launched 12:00Z, 5.0 hours before the alert went out and 229 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1848 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 560 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 103 m²/s²
0-3 km storm-relative helicity: 172 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.4

Open this sounding in Storm Lab

The text

As transmitted.

515 
WGUS54 KEWX 041702
FFWEWX
TXC091-259-050100-
/O.NEW.KEWX.FF.W.0048.250704T1702Z-250705T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
1202 PM CDT Fri Jul 4 2025

The National Weather Service in Austin/San Antonio has issued a

* Flash Flood Warning for...
  Central Comal County in south central Texas...
  Central Kendall County in south central Texas...

* Until 800 PM CDT Friday.

* At 1202 PM CDT, Automated rain gauges indicate a large and deadly 
  flood wave is moving down the Guadalupe River. Flash flooding is 
  already occurring or expected to occur through late tonight along 
  the Guadalupe River.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Radar and automated gauges.

  IMPACT...Life threatening flash flooding of low water
           crossings, small creeks and streams, and the Guadalupe
           River.

* Some locations that will experience flash flooding include...
  Sisterdale to Spring Branch to Canyon Lake.

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.

Stay away or be swept away. River banks and culverts can become 
unstable and unsafe.

Flooding is occurring or is imminent. It is important to know where 
you are relative to streams, rivers, or creeks which can become 
killers in heavy rains. Campers and hikers should avoid streams or 
creeks.

&&

LAT...LON 2992 9865 2994 9862 2993 9857 2991 9856
      2989 9849 2990 9838 2993 9833 2990 9830
      2987 9833 2984 9839 2986 9846 2985 9850
      2987 9855 2986 9859 2989 9870 2992 9869
      2995 9871 2997 9872 2997 9868 2995 9866

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

MM

2 follow-up statements

500 
WGUS54 KEWX 050057
FFWEWX
TXC091-259-050500-
/O.EXT.KEWX.FF.W.0048.000000T0000Z-250705T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
757 PM CDT Fri Jul 4 2025

The National Weather Service in Austin/San Antonio has extended the

* Flash Flood Warning for...
  Central Comal County in south central Texas...
  Central Kendall County in south central Texas...

* Until midnight CDT tonight.

* At 757 PM CDT, Flash flooding is ongoing or about to occur from 
  near Bergheim and down the Guadalupe River and to the Spring 
  Branch area later tonight. A big wave of rushing water will affect 
  the areas along the river including secondary roads and low 
  sections of the Guadalupe State Park. Take action now.

  HAZARD...Life threatening flash flooding.

  SOURCE...Rainfall amounts information and river data.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Canyon Lake, Guadalupe River State Park, Spring Branch, Sisterdale 
  and Honey Creek State Natural Area.

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.

Stay away or be swept away. River banks and culverts can become 
unstable and unsafe.

Flooding is occurring or is imminent. It is important to know where 
you are relative to streams, rivers, or creeks which can become 
killers in heavy rains. Campers and hikers should avoid streams or 
creeks.

&&

LAT...LON 2992 9865 2994 9862 2993 9857 2991 9856
      2989 9849 2990 9838 2993 9833 2990 9830
      2987 9833 2984 9839 2986 9846 2985 9850
      2987 9855 2986 9859 2989 9870 2992 9869
      2995 9871 2997 9872 2997 9868 2995 9866

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

OB

207 
WGUS54 KEWX 050443
FFWEWX
TXC091-259-051100-
/O.EXT.KEWX.FF.W.0048.000000T0000Z-250705T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
1143 PM CDT Fri Jul 4 2025

The National Weather Service in Austin/San Antonio has extended the

* Flash Flood Warning for...
  Central Comal County in south central Texas...
  Central Kendall County in south central Texas...

* Until 600 AM CDT Saturday.

* At 1143 PM CDT, A large flood wave continues down the Guadalupe 
  River and is producing a very rapid rise and flash flooding. The 
  flood wave has reached Spring Branch and will continue downstream 
  to above Canyon Lake overnight.

  HAZARD...Life threatening flash flooding and river flooding.

  SOURCE...River gauge data.

  IMPACT...Life threatening flash flooding and river flooding of
           the Guadalupe River.

* Some locations that will experience flash flooding include...
  Guadalupe River State Park, Spring Branch, and downstream 
  locations above Canyon Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to higher ground now. Act quickly to protect your life.

Stay away or be swept away. River banks and culverts can become 
unstable and unsafe.

Flooding is occurring or is imminent. Campers and hikers should 
avoid the warned area of the Guadalupe River.

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.


&&

LAT...LON 2992 9865 2994 9862 2993 9857 2991 9856
      2989 9849 2990 9838 2993 9833 2990 9830
      2987 9833 2984 9839 2986 9846 2985 9850
      2987 9855 2986 9859 2989 9870 2992 9869
      2995 9871 2997 9872 2997 9868 2995 9866

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

RUNYEN

What 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 Jul 4, 9:40 AM CDT, 2 hours 22 minutes earlier.

Area forecast discussion, Jul 4, 9:40 AM CDT, 2 hours 22 minutes before

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
940 AM CDT Fri Jul 4 2025

.UPDATE...
Another round of heavy rain is moving into the Hill Country and
will exacerbate the flooding there. We expect this upper level
low to continue to generate pockets of heavy rain into the
afternoon. We have extended the Flood Watch until 7 pm. An
additional 1 to 3 inches of rain is possible and a few spots in
the Hill Country could see another 5 inches.

&&

.SHORT TERM /THROUGH SATURDAY/...
(Today through Saturday)
Issued at 142 AM CDT Fri Jul 4 2025

Showers and isolated thunderstorms with pockets of heavy rain are
ongoing over much of South Central Texas early this morning. This is
due to forcing from a mid level trough over the Edwards Plateau
interacting with an unseasonably moist airmass with PWs of 1.8 to 2.4
inches. The 2.34 inches seen on the 04/00Z Del Rio sounding is at
the climatological maximum for this time of year. Rainfall amounts of
1 to 3 inches can be expected with isolated totals of 5 to 7 inches
possible. Instantaneous rainfall rates up to 5 inches per hour are
possible. The favored areas are across the Edwards Plateau and Hill
Country, as well as Bexar County where a Flood Watch is in effect.
These rains will continue through this morning and have extended the
Flood Watch through 18z for those areas.

The mid level feature and unseasonably moist airmass linger and will
generate isolated to widely scattered showers and thunderstorms this
afternoon through Saturday, though activity will wane, at times.
Some models indicate a potential for additional heavy rains tonight
into Saturday. Another Flood Watch may have to be issued. Due to the
clouds and rain, below to well below average temperatures continue.

&&

.LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/...
(Saturday night through Thursday)
Issued at 142 AM CDT Fri Jul 4 2025

The mid level feature lingers into Sunday. Although, moisture levels
decrease as some Subtropical Ridging begins to build over our area,
they remain elevated to allow for isolated to widely scattered
showers and thunderstorms. The favored areas are the Hill Country to
the Rio Grande Plains. The Subtropical Ridge builds more fully over
our area next week, however the mid level feature may linger.
Chances of showers and thunderstorms wane as the airmass dries under
increasing subsidence. The only rain chances will be with the
seabreeze near the Coastal Plains each afternoon. However, should a
stronger mid level feature linger, then rain chances will extend to
other parts of our area. Increased sunshine leads to temperatures
warming to near to slightly above average.

&&

.AVIATION /15Z FRIDAY THROUGH TUESDAY/...
(12Z TAFS)
Issued at 620 AM CDT Fri Jul 4 2025

Mostly MVFR CIGs with areas of RA will lift to VFR by midday. There
are PROBs of SHRA/TSRA this afternoon into evening and have gone with
PROB30s mainly at the I-35 sites. A mix of CIGs/VSBYs can be expected
in SHRA/TSRA. S to SE winds up to 10 KTs prevail with gusts to 35 KTs
near SHRA/TSRA.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              75  91  74  95 /  20  30  10  10
Austin Bergstrom Intl Airport  76  90  73  94 /  20  30  10  10
New Braunfels Muni Airport     75  89  73  93 /  20  30  10  10
Burnet Muni Airport            73  87  71  91 /  20  30  10  10
Del Rio Intl Airport           76  95  75  94 /  10  10  10  30
Georgetown Muni Airport        75  89  73  92 /  20  30  10  10
Hondo Muni Airport             74  87  73  89 /  20  30  10  10
San Marcos Muni Airport        75  88  73  92 /  20  30  10  10
La Grange - Fayette Regional   76  93  73  94 /  20  20   0  10
San Antonio Intl Airport       76  87  75  91 /  20  30  10  10
Stinson Muni Airport           76  89  75  93 /  20  30  10  10

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
Flood Watch until 7 PM CDT this evening for Bandera-Bexar-
Blanco-Burnet-Edwards-Gillespie-Kendall-Kerr-Kinney-Llano-
Medina-Real-Uvalde.
&&

Update...05
Short-Term...04
Long-Term...04
Aviation...04

In the hours before

Local storm report, Jul 4, 7:43 AM CDT, 4 hours 19 minutes before

Preliminary Local Storm Report
National Weather Service Austin/San Antonio TX
743 AM CDT Fri Jul 4 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0742 AM     Flash Flood      5 SSW Hunt              30.01N 99.38W
07/04/2025                   Kerr               TX   Public

            TxDOT reports several low water crossings
            flooded along SH 39 between Hunt and Hwy 83.

&&

JR

Local storm report, Jul 4, 7:48 AM CDT, 4 hours 14 minutes before

Preliminary Local Storm Report
National Weather Service Austin/San Antonio TX
748 AM CDT Fri Jul 4 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0747 AM     Flash Flood      2 ENE Ingram            30.09N 99.20W
07/04/2025                   Kerr               TX   Dept of Highways

            TxDOT reports low water crossings flooded on
            FM 1338.

&&

JR

Special weather statement, Jul 4, 9:16 AM CDT, 2 hours 46 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
916 AM CDT Fri Jul 4 2025

TXZ186-188-041500-
Gillespie TX-Kerr TX-
916 AM CDT Fri Jul 4 2025

...A strong thunderstorm will impact portions of north central Kerr
and western Gillespie Counties through 1000 AM CDT...

At 916 AM CDT, Doppler radar was tracking a strong thunderstorm 8
miles northwest of Harper, or 26 miles northwest of Kerrville, moving
southeast at 25 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Ingram, Mountain Home, Tivydale, Doss, Waltonia, Harper, I-10 Near
The Kimble-Kerr County Line, and The Intersection Of I-10 And Us 290.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3050 9915 3035 9895 3003 9925 3029 9959
      3029 9930 3050 9931
TIME...MOT...LOC 1416Z 304DEG 23KT 3037 9935

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

MM

Local storm report, Jul 4, 9:48 AM CDT, 2 hours 14 minutes before

Preliminary Local Storm Report
National Weather Service Austin/San Antonio TX
948 AM CDT Fri Jul 4 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0947 AM     Flash Flood      3 W Hunt                30.07N 99.38W
07/04/2025                   Kerr               TX   Dept of Highways

            TxDOT reporting low water crossings flooded
            on FM 1340 west of Hunt.

&&

JR

Local storm report, Jul 4, 9:55 AM CDT, 2 hours 7 minutes before

Preliminary Local Storm Report
National Weather Service Austin/San Antonio TX
955 AM CDT Fri Jul 4 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0952 AM     Flash Flood      4 NE Hunt               30.12N 99.29W
07/04/2025                   Kerr               TX   Dept of Highways

            TxDOT reporting SH 27 closed due to flooding
            from Business 87 to Mountain Home.

&&

JR

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 3, 9:28 PM CDT	Areal Flood Advisory	EWX	Kendall	3 hr
Jul 3, 11:16 PM CDT	Areal Flood Advisory	EWX	Bandera	25 min
Jul 3, 11:41 PM CDT	Flash Flood Warning Considerable damage threat	EWX	Bandera	4 hr
Jul 4, 1:14 AM CDT	Flash Flood Warning EmergencyConsiderable damage threat	EWX	Bandera, Kerr	18 hr
Jul 4, 3:19 AM CDT	River Flood Warning	EWX	Kerr	22 hr
Jul 4, 3:33 AM CDT	River Flood Warning	EWX	Kerr	22 hr
Jul 4, 4:50 AM CDT	Areal Flood Advisory	EWX	Gillespie	4 hr
Jul 4, 5:23 AM CDT	River Flood Warning	EWX	Kendall	20 hr
Jul 4, 5:34 AM CDT	Flash Flood Warning EmergencyCatastrophic damage threat	EWX	Kerr	13 hr
Jul 4, 6:00 AM CDT	Areal Flood Advisory	EWX	Gillespie	3 hr
Jul 4, 6:27 AM CDT	Flash Flood Warning Considerable damage threat	EWX	Kerr	7 hr
Jul 4, 7:24 AM CDT	Flash Flood Warning EmergencyCatastrophic damage threat	EWX	Kendall, Kerr	11 hr
Jul 4, 8:18 AM CDT	Areal Flood Advisory	EWX	Llano	5 hr
Jul 4, 8:20 AM CDT	Areal Flood Advisory	EWX	Gillespie	4 hr
Jul 4, 8:30 AM CDT	River Flood Warning	EWX	Llano	24 hr
Jul 4, 8:41 AM CDT	Areal Flood Advisory	EWX	Edwards, Real	5 hr
Jul 4, 8:56 AM CDT	Flash Flood Warning Considerable damage threat	EWX	Gillespie	4 hr
Jul 4, 9:16 AM CDT	Special Weather Statement	EWX	Kerr	44 min
Jul 4, 9:37 AM CDT	Flash Flood Warning Considerable damage threat	EWX	Kerr, Real	4 hr
Jul 4, 10:06 AM CDT	Flash Flood Warning Considerable damage threat	EWX	Bandera, Kerr	5 hr
Jul 4, 10:29 AM CDT	Areal Flood Advisory	EWX	Gillespie	6 hr
Jul 4, 10:29 AM CDT	River Flood Warning	EWX	Comal	21 hr
Jul 4, 10:39 AM CDT	Flash Flood Warning Considerable damage threat	EWX	Bandera, Real	4 hr
Jul 4, 10:46 AM CDT	Flash Flood Warning Considerable damage threat	EWX	Llano	9 hr
Jul 4, 11:02 AM CDT	Flash Flood Warning Considerable damage threat	EWX	Kendall	4 hr
Jul 4, 11:02 AM CDT	River Flood Warning	EWX	Bandera	19 hr
Jul 4, 1:00 PM CDT	Areal Flood Advisory	EWX	Kerr	3 hr
Jul 4, 1:05 PM CDT	Areal Flood Advisory	EWX	Gillespie	3 hr
Jul 4, 1:08 PM CDT	Areal Flood Advisory	EWX	Kerr, Real	112 min
Jul 4, 1:30 PM CDT	Flash Flood Warning Considerable damage threat	EWX	Travis, Williamson	2 hr
Jul 4, 1:37 PM CDT	Areal Flood Advisory	EWX	Blanco, Comal, Hays, Kendall	3 hr
Jul 4, 2:32 PM CDT	Areal Flood Advisory	EWX	Bandera, Real	116 min
Jul 4, 2:46 PM CDT	Areal Flood Advisory	EWX	Kendall	103 min
Jul 4, 3:11 PM CDT	Areal Flood Advisory	EWX	Bandera, Kerr	101 min
Jul 4, 3:47 PM CDT	Areal Flood Advisory	EWX	Gillespie, Kerr	3 hr
Jul 4, 6:02 PM CDT	Areal Flood Advisory	EWX	Gillespie	3 hr
Jul 4, 6:41 PM CDT	Areal Flood Advisory	EWX	Kerr	2 hr
Jul 4, 6:47 PM CDT	Areal Flood Advisory	EWX	Kendall, Kerr	2 hr

Nearby

Flash Flood Warnings in Texas, 2025 Every flash flood warning in 2025

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.