Alert archive / Texas / Flash Flood Warnings in 2023

Flash Flood Warning 39, NWS Austin/San Antonio, TX

October 26, 2023Travis County, Williamson County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Oct 26, 2023, 10:09 AM CDT for Travis County, Williamson County, Texas. It was in force for 7 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: Oct 26, 2023, 10:09 AM CDT (15:09 UTC)
Expired: Oct 26, 2023, 5:15 PM CDT
In force: 7 hr
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

Counties Travis County, TX, Williamson County, TX

The radar

The Ft Hood radar (KGRK), 11 km from the middle of the area, began a volume at 15:09 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.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 3.2 hours before the alert went out and 243 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 885 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: -120 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

435 
WGUS54 KEWX 261509
FFWEWX
TXC453-491-261815-
/O.NEW.KEWX.FF.W.0039.231026T1509Z-231026T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
1009 AM CDT Thu Oct 26 2023

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

* Flash Flood Warning for...
  Northeastern Travis County in south central Texas...
  Eastern Williamson County in south central Texas...

* Until 115 PM CDT.

* At 1009 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 4 inches of rain 
  have fallen. 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...
  Austin, Round Rock, Georgetown, Pflugerville, Taylor, Granger, 
  Windemere, Hutto, Bartlett, Thrall, Weir, Granger Dam, Jonah, 
  Waterloo, Hoxie, Noack, Sandoval, Hare, Laneport and Wells Branch.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3055 9769 3074 9752 3081 9746 3080 9743
      3079 9740 3078 9738 3077 9736 3075 9732
      3074 9727 3065 9724 3056 9730 3049 9743
      3040 9771 3043 9775

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

$$

29

3 follow-up statements

164 
WGUS54 KEWX 261758
FFWEWX
TXC453-491-262015-
/O.EXT.KEWX.FF.W.0039.000000T0000Z-231026T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
1258 PM CDT Thu Oct 26 2023

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

* Flash Flood Warning for...
  Northeastern Travis County in south central Texas...
  Eastern Williamson County in south central Texas...

* Until 315 PM CDT.

* At 1258 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 3 and 6 inches of rain 
  have fallen. 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...
  Austin, Round Rock, Georgetown, Pflugerville, Taylor, Granger, 
  Windemere, Hutto, Bartlett, Thrall, Weir, Granger Dam, Jonah, 
  Waterloo, Hoxie, Noack, Sandoval, Hare, Laneport and Wells Branch.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3055 9769 3074 9752 3081 9746 3080 9743
      3079 9740 3078 9738 3077 9736 3075 9732
      3074 9727 3065 9724 3056 9730 3049 9743
      3040 9771 3043 9775

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

$$

03

467 
WGUS54 KEWX 261936
FFWEWX
TXC453-491-262215-
/O.EXT.KEWX.FF.W.0039.000000T0000Z-231026T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
236 PM CDT Thu Oct 26 2023

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

* Flash Flood Warning for...
  Northeastern Travis County in south central Texas...
  Eastern Williamson County in south central Texas...

* Until 515 PM CDT.

* At 236 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 3 and 5 inches of rain 
  have fallen. Additional rainfall amounts up to 1.5 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.

  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, Georgetown, Pflugerville, Taylor, Granger, 
  Windemere, Hutto, Bartlett, Thrall, Weir, Granger Dam, Jonah, 
  Waterloo, Hoxie, Noack, Sandoval, Hare, Laneport and Wells Branch.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 3055 9769 3074 9752 3081 9746 3080 9743
      3079 9740 3078 9738 3077 9736 3075 9732
      3074 9727 3065 9724 3056 9730 3049 9743
      3040 9771 3043 9775

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

$$

ZEITLER

193 
WGUS74 KEWX 262213
FFSEWX

Flash Flood Statement
National Weather Service Austin/San Antonio TX
513 PM CDT Thu Oct 26 2023

TXC453-491-262223-
/O.EXP.KEWX.FF.W.0039.000000T0000Z-231026T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Travis TX-Williamson TX-
513 PM CDT Thu Oct 26 2023

...FLASH FLOOD WARNING WILL EXPIRE AT 515 PM CDT THIS AFTERNOON FOR 
NORTHEASTERN TRAVIS AND EASTERN WILLIAMSON COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

A Flood Watch remains in effect until 1200 AM CDT Friday for a 
portion of south central Texas.

LAT...LON 3055 9769 3074 9752 3081 9746 3080 9743
      3079 9740 3078 9738 3077 9736 3075 9732
      3074 9727 3065 9724 3056 9730 3049 9743
      3040 9771 3043 9775

$$

CP

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 25, 9:27 PM CDT	Areal Flood Advisory	EWX	Bandera, Burnet, Gillespie, Kerr, Llano, Real	7 hr
Oct 25, 9:41 PM CDT	Areal Flood Advisory	EWX	Edwards, Val Verde	3 hr
Oct 25, 10:12 PM CDT	Special Weather Statement	EWX	Kinney	48 min
Oct 25, 10:26 PM CDT	Flash Flood Warning Considerable damage threat	EWX	Gillespie, Llano	9 hr
Oct 25, 10:33 PM CDT	Special Weather Statement	EWX	Llano	42 min
Oct 25, 11:08 PM CDT	Special Weather Statement	EWX	Burnet	37 min
Oct 26, 12:44 AM CDT	Areal Flood Advisory	EWX	Edwards, Kerr, Kinney, Real	93 min
Oct 26, 2:17 AM CDT	Flash Flood Warning Considerable damage threat	EWX	Edwards, Kerr, Kinney, Real	3 hr
Oct 26, 3:12 AM CDT	River Flood Warning	EWX	Llano	10 hr
Oct 26, 4:23 AM CDT	Areal Flood Advisory	EWX	Gillespie, Kerr, Llano	3 hr
Oct 26, 5:23 AM CDT	Flash Flood Warning Considerable damage threat	EWX	Gillespie	3 hr
Oct 26, 5:26 AM CDT	Areal Flood Advisory	EWX	Burnet, Llano	4 hr
Oct 26, 6:01 AM CDT	Areal Flood Advisory	EWX	Blanco	4 hr
Oct 26, 7:38 AM CDT	Areal Flood Advisory	EWX	Travis, Williamson	3 hr
Oct 26, 8:06 AM CDT	Tornado Warning	EWX	Caldwell	24 min
Oct 26, 8:23 AM CDT	Tornado Warning Tornado observed	EWX	Bastrop, Caldwell, Travis	15 min
Oct 26, 8:53 AM CDT	Areal Flood Warning	EWX	Edwards, Real, Uvalde	3 hr
Oct 26, 9:11 AM CDT	Tornado Warning	EWX	Comal, Hays	15 min
Oct 26, 10:07 AM CDT	Areal Flood Advisory	EWX	Comal, Hays, Travis	3 hr
Oct 26, 10:42 AM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Bexar, Wilson	33 min
Oct 26, 10:49 AM CDT	Severe Thunderstorm Warning	EWX	Bexar, Wilson	41 min
Oct 26, 11:03 AM CDT	Tornado Warning	EWX	Caldwell, Hays	27 min
Oct 26, 11:34 AM CDT	Areal Flood Advisory	EWX	Atascosa, Bexar, Guadalupe, Wilson	5 hr
Oct 26, 11:51 AM CDT	Tornado Warning	EWX	Wilson	24 min
Oct 26, 12:24 PM CDT	Special Weather Statement	EWX	Guadalupe	36 min
Oct 26, 12:47 PM CDT	Areal Flood Advisory	EWX	Bastrop, Bexar, Caldwell, Comal, Guadalupe, Hays and 4 more	7 hr
Oct 26, 12:52 PM CDT	Flash Flood Warning Considerable damage threat	EWX	Hays, Travis	3 hr
Oct 26, 2:09 PM CDT	Areal Flood Warning	EWX	Edwards, Real, Uvalde	6 hr
Oct 26, 3:01 PM CDT	River Flood Warning	EWX	Uvalde	6 hr
Oct 26, 3:09 PM CDT	Areal Flood Advisory	EWX	Bastrop, DeWitt, Fayette, Gonzales, Lee	3 hr
Oct 26, 3:31 PM CDT	Areal Flood Advisory	EWX	Fayette, Gonzales, Lavaca	3 hr
Oct 26, 4:45 PM CDT	Areal Flood Advisory	EWX	Fayette	3 hr

Nearby

Flash Flood Warnings in Texas, 2023 Every flash flood warning in 2023

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.