Alert archive / Texas / Flash Flood Warnings in 2026

Flash Flood Warning 35, NWS Austin/San Antonio, TX

June 15, 2026Burnet County, Travis County, Williamson County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 15, 2026, 12:55 AM CDT for Burnet County, Travis County, Williamson County, Texas. It was in force for 8 hr. 4 reports 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
Jun 15, 2026, 12:55 AM CDT (05:55 UTC)
Expired
Jun 15, 2026, 8:30 AM CDT
In force
8 hr
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Damage threat
Considerable
Flood severity
None

Counties Burnet County, TX, Travis County, TX, Williamson County, TX

The radar

The Ft Hood radar (KGRK), 63 km from the middle of the area, began a volume at 05:55 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

TimeReportWhereRemark
Jun 15, 3:00 AM CDTFLASH FLOOD2 Ne Leander, TXLeander Road (RM 2243) closed due to flooding. Several low water crossings across Williamson county closed.
Jun 15, 3:30 AM CDTFLASH FLOOD4 Ssw Jollyville, TXNumerous low water crossings closed Travis County to north and northwest of Austin; including the usual Spicewood road crossings.
Jun 15, 3:30 AM CDTFLASH FLOODMarble Falls, TXSeveral low water crossings closed in southern Burnet county near Marble Falls.
Jun 15, 7:02 AM CDTFLASH FLOOD4 Ssw Jollyville, TXSpicewood Springs Road impassable due to flood waters along with a large log blocking the road.

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 4 storm reports to this flash flood warning; the first came 125 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

Fort Worth, TX (KFWD), launched 00:00Z, 5.9 hours before the alert went out and 265 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-pSkew-T log-p diagram, Fort Worth, TX at 00:00Z on 2026-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 64 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 00:00Z on 2026-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
64 J/kg
Mixed-layer CIN
-83 J/kg
Mixed-layer LCL
757 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
50 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

103 
WGUS54 KEWX 150555
FFWEWX
TXC053-453-491-151000-
/O.NEW.KEWX.FF.W.0035.260615T0555Z-260615T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
1255 AM CDT Mon Jun 15 2026

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

* Flash Flood Warning for...
  Southwestern Burnet County in south central Texas...
  Northern Travis County in south central Texas...
  Southwestern Williamson County in south central Texas...

* Until 500 AM CDT.

* At 1255 AM CDT, Doppler radar and automated rain gauges indicated 
  thunderstorms producing heavy rain across the warned area. Between 
  1 and 2 inches of rain have fallen. Additional rainfall amounts of 
  1 to 3 inches 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 and automated gauges.

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

* Some locations that will experience flash flooding include...
  Austin, Round Rock, Cedar Park, Georgetown, Pflugerville, Taylor, 
  Burnet, Marble Falls, Round Mountain, Anderson Mill, Serenada, 
  Windemere, Leander, Hutto, Lakeway, Manor, Lago Vista, Granite 
  Shoals, Horseshoe Bay and Hudson Bend.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3071 9791 3071 9767 3062 9742 3031 9758
      3036 9789 3042 9813 3043 9813 3043 9814
      3046 9825 3046 9827 3048 9833 3074 9836

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

$$

MM
3 follow-up statements
264 
WGUS54 KEWX 150842
FFWEWX
TXC053-453-491-151200-
/O.EXT.KEWX.FF.W.0035.000000T0000Z-260615T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
342 AM CDT Mon Jun 15 2026

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

* Flash Flood Warning for...
  Southwestern Burnet County in south central Texas...
  Northern Travis County in south central Texas...
  Southwestern Williamson County in south central Texas...

* Until 700 AM CDT.

* At 342 AM CDT, Doppler radar and automated rain gauges indicated 
  thunderstorms producing heavy rain across the warned area. Between 
  2 and 3 inches of rain have fallen. Additional rainfall amounts of 
  1 to 2 inches are possible in the warned area. Flash flooding is 
  occurring and numerous low water crossings are closed in Travis 
  and southern Williamson County.

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

  SOURCE...Radar and automated gauges.

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

* Some locations that will experience flash flooding include...
  Austin, Round Rock, Cedar Park, Georgetown, Pflugerville, Taylor, 
  Burnet, Marble Falls, Round Mountain, Anderson Mill, Serenada, 
  Windemere, Leander, Hutto, Lakeway, Manor, Lago Vista, Granite 
  Shoals, Horseshoe Bay and Hudson Bend.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3071 9791 3071 9767 3062 9742 3031 9758
      3036 9789 3042 9813 3043 9813 3043 9814
      3046 9825 3046 9827 3048 9833 3074 9836

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

$$

MM
207 
WGUS54 KEWX 151140
FFWEWX
TXC053-453-491-151400-
/O.EXT.KEWX.FF.W.0035.000000T0000Z-260615T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
640 AM CDT Mon Jun 15 2026

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

* Flash Flood Warning for...
  Southwestern Burnet County in south central Texas...
  Northern Travis County in south central Texas...
  Southwestern Williamson County in south central Texas...

* Until 900 AM CDT.

* At 640 AM CDT, Doppler radar and automated rain gauges indicated 
  thunderstorms producing heavy rain across the warned area. Between 
  2 and 5 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 and automated gauges.

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

* Some locations that will experience flash flooding include...
  Austin, Round Rock, Cedar Park, Georgetown, Pflugerville, Taylor, 
  Burnet, Marble Falls, Round Mountain, Anderson Mill, Serenada, 
  Windemere, Leander, Hutto, Lakeway, Manor, Lago Vista, Granite 
  Shoals, Horseshoe Bay and Hudson Bend.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

Be aware of your surroundings and do not drive on flooded roads.

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 3071 9791 3071 9767 3062 9742 3031 9758
      3036 9789 3042 9813 3043 9813 3043 9814
      3046 9825 3046 9827 3048 9833 3074 9836

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

$$

MM
271 
WGUS74 KEWX 151330
FFSEWX

Flash Flood Statement
National Weather Service Austin/San Antonio TX
830 AM CDT Mon Jun 15 2026

TXC053-453-491-151340-
/O.CAN.KEWX.FF.W.0035.000000T0000Z-260615T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burnet TX-Travis TX-Williamson TX-
830 AM CDT Mon Jun 15 2026

...FLASH FLOOD WARNING FOR SOUTHWESTERN BURNET, NORTHERN TRAVIS AND 
SOUTHWESTERN WILLIAMSON COUNTIES HAS BEEN REPLACED WITH A FLOOD 
ADVISORY...

&&

LAT...LON 3071 9791 3071 9767 3062 9742 3031 9758
      3036 9789 3042 9813 3043 9813 3043 9814
      3046 9825 3046 9827 3048 9833 3074 9836

$$

62

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 Jun 15, 12:08 AM CDT, 47 minutes earlier. Its key messages:

  • Flood Watch in place across South-Central Texas from this evening through Tuesday afternoon with pockets of heavy rainfall and high hourly rainfall rates expected at times.
  • Monitoring additional rain and any flooding concerns along coastal plains Wednesday into Thursday as leftover spin from the tropical disturbance in Mexico lifts northeastward along the Texas coast.
  • Additional scattered rain and storm potential from Friday through Saturday with energy approaching from the Texas panhandle.
  • Elevated heat indices today and late week into the weekend.
Area forecast discussion, Jun 15, 12:08 AM CDT, 47 minutes before
Area Forecast Discussion
National Weather Service Austin/San Antonio TX
1208 AM CDT Mon Jun 15 2026

...New AVIATION...

.KEY MESSAGES...

- Flood Watch in place across South-Central Texas from this
  evening through Tuesday afternoon with pockets of heavy rainfall
  and high hourly rainfall rates expected at times.

- Monitoring additional rain and any flooding concerns along
  coastal plains Wednesday into Thursday as leftover spin from the
  tropical disturbance in Mexico lifts northeastward along the
  Texas coast.

- Additional scattered rain and storm potential from Friday
  through Saturday with energy approaching from the Texas
  panhandle.

- Elevated heat indices today and late week into the weekend.

&&

.SHORT TERM...
(Tonight through Monday night)
Issued at 1244 PM CDT Sun Jun 14 2026

Rich tropical moisture has moved into South-Central Texas with the
influence from the tropical disturbance that has moved inland over
Mexico. Precipitable water values are now around 2 inches for
locations along the I-35 corridor and are expected to continue to
increase into the 2.25 to 2.4 inch (at the 99+ percentile for this
time of year) range later tonight through Monday. This afternoon
should feature scattered rain showers and thunderstorms across the
region with occasional heavier downpours producing around a quick
half inch or more. Rain and thunderstorm coverage then increases
tonight through Monday into Tuesday as a front sags southward into
the region and acts as an additional catalyst for activity. This
front slows and starts to stall out near or within the region. Our
main concern and the reason for the issuance of the Flood Watch is
where the mesoscale banding of heavier storms develop with higher
rainfall rates (2-3+ inch per hour) and where these storms could
move over the same locations repeatedly. Regional rainfall amounts
are forecast to be in the 1 to 3 inch range with likely isolated
pockets or narrow regions with 8+ inches. This is supported by the
latest 12Z HREF and REFS LPMM guidance. Flash flooding along with
responses in area rivers and creeks from runoff will be possible
near and downstream of those bullseyes of higher totals. Avoid low
water crossings and turn around, don't drown!

Elevated heat indices remain this afternoon but daytime highs will
not be as high Monday and Tuesday due to the cloud cover and the
area rainfall. Along and behind the front, the winds would turn to
the east-northeast for a time while the locations that primarily
remain to the south of the front continues with south-southeast
winds.

&&

.LONG TERM...
(Tuesday through next Sunday)
Issued at 1244 PM CDT Sun Jun 14 2026

Rain chances late in the day on Tuesday into Tuesday night should
shift towards the southeast to the coastal plains and the areas
along the Texas coast. These rain chances hold through Wednesday
into Thursday. This would be associated with the leftover spin in
the mid-levels of the atmosphere from the disturbance meandering
across Mexico, which then slowly lifts northeastward with time,
generally paralleling near or along the Texas coast. This will be
something to keep a close eye on as the rainfall gradient could
become quite tight across our southeastern region, between areas
with no to little rainfall and heavier totals. If that mid-level
spin advances farther inland than forecast, then the rain chances
would increase considerably farther west within our region with
greater concern for heavy rainfall and additional flash flooding
risk. If the current forecast holds, the daytime highs across our
western and central zones rebound with returning of elevated to
hazardous heat indices. Overnights stay very warm and humid.

Scattered rain and storm chances are then forecast to spread over
the region once more from Friday into Saturday with the possible
influence from a mid-level disturbance and/or convective outflow
across the southern Texas panhandle into the San Angelo and Big
Country region. Some isolated heavier downpours could again be
possible with this activity. With warm and humid conditions, heat
indices could still remain elevated and hazardous through this
period.

&&

.AVIATION...
(06Z TAFS)
Issued at 1206 AM CDT Mon Jun 15 2026

A very active night ahead at area terminals. Opted to continue
with the status quo, but to add prevailing TSRA at AUS through 09Z
and introduce TEMPO groups instead of PROB30 groups at SAT and SSF
through sunrise. Low confidence in afternoon storm coverage at
this time as well as the evolution of storms for Monday night.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              83  74  87  74 /  90  40  60  10
Austin Bergstrom Intl Airport  83  74  86  74 /  90  50  60  10
New Braunfels Muni Airport     83  73  85  73 /  90  70  60  10
Burnet Muni Airport            80  71  86  72 /  90  30  30   0
Del Rio Intl Airport           87  73  91  74 /  80  30  20   0
Georgetown Muni Airport        82  72  86  73 /  90  30  50  10
Hondo Muni Airport             83  72  86  72 /  90  60  60   0
San Marcos Muni Airport        83  73  85  73 /  90  60  60  10
La Grange - Fayette Regional   83  74  84  74 /  80  70  80  10
San Antonio Intl Airport       84  74  85  74 /  90  70  70  10
Stinson Muni Airport           84  74  85  74 /  90  70  70  10

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
Flood Watch through Tuesday evening for TXZ171>173-183>194-
202>209-217>225-228.

&&

SHORT TERM...62
LONG TERM....62
AVIATION...MMM

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 8:27 PM CDTAreal Flood AdvisoryEWXVal Verde3 hr
Jun 14, 9:22 PM CDTAreal Flood AdvisoryEWXBurnet, Llano3 hr
Jun 14, 9:40 PM CDTFlash Flood Warning Considerable damage threatEWXLlano3 hr
Jun 14, 9:50 PM CDTAreal Flood AdvisoryEWXEdwards, Val Verde115 min
Jun 14, 9:57 PM CDTFlash Flood Warning Considerable damage threatEWXBurnet3 hr
Jun 14, 10:49 PM CDTFlash Flood Warning Considerable damage threatEWXEdwards, Val Verde4 hr
Jun 14, 11:19 PM CDTAreal Flood AdvisoryEWXGillespie9 min
Jun 14, 11:28 PM CDTFlash Flood Warning Considerable damage threatEWXGillespie5 hr
Jun 14, 11:35 PM CDTAreal Flood AdvisoryEWXGillespie, Llano3 hr
Jun 14, 11:42 PM CDTFlash Flood Warning Considerable damage threatEWXBlanco, Burnet, Llano6 hr
Jun 14, 11:50 PM CDTAreal Flood AdvisoryEWXEdwards, Kerr, Kinney, Real, Val Verde3 hr
Jun 15, 12:23 AM CDTAreal Flood AdvisoryEWXTravis, Williamson3 hr
Jun 15, 1:30 AM CDTAreal Flood AdvisoryEWXBandera, Bexar, Kendall, Medina20 min
Jun 15, 1:50 AM CDTFlash Flood Warning Considerable damage threatEWXBandera, Bexar, Kendall, Medina8 hr
Jun 15, 1:53 AM CDTAreal Flood AdvisoryEWXBlanco, Hays, Travis27 min
Jun 15, 2:01 AM CDTAreal Flood AdvisoryEWXMedina, Uvalde3 hr
Jun 15, 2:08 AM CDTFlash Flood Warning Considerable damage threatEWXBastrop, Lee, Travis, Williamson6 hr
Jun 15, 2:20 AM CDTFlash Flood Warning Considerable damage threatEWXBlanco, Hays, Travis7 hr
Jun 15, 2:41 AM CDTAreal Flood AdvisoryEWXBandera, Kendall, Kerr3 hr
Jun 15, 3:08 AM CDTFlash Flood Warning Considerable damage threatEWXBandera, Medina, Real, Uvalde4 hr
Jun 15, 3:15 AM CDTFlash Flood Warning Considerable damage threatEWXBlanco, Comal, Hays6 hr
Jun 15, 3:31 AM CDTFlash Flood Warning Considerable damage threatEWXBandera, Kerr5 hr
Jun 15, 4:04 AM CDTAreal Flood AdvisoryEWXGillespie, Kendall3 hr
Jun 15, 4:23 AM CDTFlash Flood Warning Considerable damage threatEWXBexar, Comal, Guadalupe, Hays4 hr
Jun 15, 4:24 AM CDTRiver Flood WarningEWXTravis5 hr
Jun 15, 4:41 AM CDTAreal Flood AdvisoryEWXBastrop, Caldwell, Lee4 hr
Jun 15, 4:48 AM CDTFlash Flood Warning Considerable damage threatEWXKendall4 hr
Jun 15, 4:58 AM CDTFlash Flood Warning Considerable damage threatEWXMaverick6 hr
Jun 15, 5:36 AM CDTFlash Flood Warning Considerable damage threatEWXBexar, Medina5 hr
Jun 15, 6:35 AM CDTAreal Flood AdvisoryEWXFayette, Gonzales, Guadalupe, Lavaca, Lee3 hr
Jun 15, 6:53 AM CDTAreal Flood AdvisoryEWXAtascosa, Bexar, Guadalupe, Karnes, Wilson3 hr
Jun 15, 6:59 AM CDTAreal Flood AdvisoryEWXMedina, Uvalde3 hr
Jun 15, 7:38 AM CDTAreal Flood AdvisoryEWXMaverick58 min
Jun 15, 8:06 AM CDTAreal Flood AdvisoryEWXBastrop, Lee, Travis, Williamson114 min
Jun 15, 8:25 AM CDTAreal Flood AdvisoryEWXBexar, Comal, Guadalupe95 min
Jun 15, 8:28 AM CDTRiver Flood WarningEWXBexar19 hr
Jun 15, 8:30 AM CDTAreal Flood AdvisoryEWXBurnet, Travis, Williamson60 min
Jun 15, 8:36 AM CDTFlash Flood Warning Considerable damage threatEWXMaverick7 hr
Jun 15, 8:52 AM CDTAreal Flood AdvisoryEWXKendall3 hr
Jun 15, 8:57 AM CDTAreal Flood AdvisoryEWXBandera, Kerr78 min
Jun 15, 8:59 AM CDTAreal Flood AdvisoryEWXBlanco, Comal, Hays91 min
Jun 15, 9:02 AM CDTAreal Flood AdvisoryEWXBlanco, Hays, Travis88 min
Jun 15, 9:23 AM CDTAreal Flood AdvisoryEWXBandera, Bexar, Kendall, Medina2 hr
Jun 15, 9:50 AM CDTRiver Flood WarningEWXBexar24 hr
Jun 15, 9:53 AM CDTRiver Flood WarningEWXBexar, Wilson23 hr
Jun 15, 10:32 AM CDTAreal Flood AdvisoryEWXBexar, Medina73 min
Jun 15, 10:59 AM CDTAreal Flood AdvisoryEWXMaverick3 hr
Jun 15, 3:01 PM CDTRiver Flood WarningEWXKarnes, Wilson18 hr
Jun 15, 3:37 PM CDTAreal Flood AdvisoryEWXEdwards, Kinney, Val Verde2 hr
Jun 15, 3:53 PM CDTAreal Flood AdvisoryEWXMaverick83 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.