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Flash Flood Warning 0016
Issued by the Austin / San Antonio Forecast Office

Action Issued Starts Expiration
New 2026-05-19 22:26:15 2026-05-19 22:25:00 2026-05-20 03:00:00
Cancelled 2026-05-20 02:51:53 2026-05-20 03:00:00


Action: New
Issued At: 2026-05-19 22:26:15

280 
WGUS54 KEWX 200325
FFWEWX
TXC491-200800-
/O.NEW.KEWX.FF.W.0016.260520T0325Z-260520T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Austin/San Antonio TX
1025 PM CDT Tue May 19 2026

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

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

* Until 300 AM CDT.

* At 1025 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 3 inches of rain 
  have fallen. Additional rainfall amounts up to 2 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...
  Round Rock, Georgetown, Taylor, Granger, Serenada, Hutto, 
  Bartlett, Thrall, Weir, Granger Dam, Georgetown Dam, Sun City, 
  Jonah, Waterloo, Walburg, Hoxie, Sandoval, Laneport and Hare.

This includes the following streams and drainages...
  Pecan Branch, Opossum Creek, Weir Branch, Dry Berry Creek, South 
  Fork Mustang Creek, Brushy Creek, North Fork San Gabriel River, 
  South Fork San Gabriel River, Long Branch, Mileham Branch, Berry 
  Creek, Cottonwood Creek, Turkey Creek, Yankee Branch, McNutt 
  Creek, Mustang Creek, Smith Branch, Bull Branch, Cowan Creek, 
  Middle Fork San Gabriel River, Donahoe Creek, San Gabriel River, 
  Willis Creek, Chandler Branch, Alligator Creek and Smalley Branch.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, dont 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 3058 9775 3075 9779 3073 9769 3079 9742
      3079 9740 3078 9738 3077 9736 3075 9732
      3074 9727 3063 9722 3061 9722 3060 9721
      3057 9720 3054 9757

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

$$

MO


Action: Cancelled
Issued At: 2026-05-20 02:51:53

450 
WGUS74 KEWX 200751
FFSEWX

Flash Flood Statement
National Weather Service Austin/San Antonio TX
251 AM CDT Wed May 20 2026

TXC491-200801-
/O.CAN.KEWX.FF.W.0016.000000T0000Z-260520T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Williamson TX-
251 AM CDT Wed May 20 2026

...FLASH FLOOD WARNING FOR CENTRAL WILLIAMSON COUNTY HAS BEEN 
REPLACED WITH A FLOOD ADVISORY...

Heavy rain has ended though light rain continues over the area for 
the next hour or so, but some roads may still be flooded. Therefore, 
the Flash Flood Warning has been replaced with a Flood Advisory.

&&

LAT...LON 3058 9775 3075 9779 3073 9769 3079 9742
      3079 9740 3078 9738 3077 9736 3075 9732
      3074 9727 3063 9722 3061 9722 3060 9721
      3057 9720 3054 9757

$$

27



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