Headline:
Flash Flood Warning issued June 20 at 3:40AM CDT until June 20 at 6:00AM CDT by NWS Austin/San Antonio TX
Event:
Flash Flood Warning
Urgency:
Immediate
Effective:
June 20, 2026 - 1:40am
Expires:
June 20, 2026 - 4:00am
Description:
At 340 AM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 2 and 5 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...
San Antonio, Castroville, Stinson Municipal Airport, San Antonio
Int Airport, Leon Valley, Helotes, Alamo Heights, Terrell Hills,
Shavano Park, Hollywood Park, Olmos Park, Lacoste, Sea World,
Lackland AFB, Government Canyon State Natural Area, Cliff, Rio
Medina, Bader, Castle Hills and Balcones Heights.
Light to moderate rains continue to fall over the warned area, with
an additional 1/4 to 1/2 inch possible through 6 AM. This additional
rain could maintain elevated flows on area creeks and streams and
also further add to the flooding of poor drainage areas.
Instruction:
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Area Description:
Bexar, TX; Medina, TX
Forcast Office:
NWS Austin/San Antonio TX
Sender:
w-nws.webmaster@noaa.gov