Headline:
Flash Flood Warning issued April 20 at 8:02PM CDT until April 20 at 9:00PM CDT by NWS Austin/San Antonio TX
Event:
Flash Flood Warning
Urgency:
Immediate
Effective:
April 20, 2026 - 6:02pm
Expires:
April 20, 2026 - 7:00pm
Description:
At 802 PM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the western part of Bexar County. This area of the
county did not get a lot of rain earlier, however, a quick 0.25 to
0.5 inch and up to an inch of rainfall is possible a line of storms
move over those area. Unfortunately, this heavy rain is moving
toward the northern and central part of Bexar County, where between
2 and 4 inches of rain have fallen since mid to late afternoon.
Additional rainfall amounts of 1 to 2 inches are possible over the
northern and central Bexar County with storms training and rain
filling from the southern part of the county. 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, New Braunfels, Schertz, Seguin, Cibolo, Converse,
Universal City, Live Oak, Selma, Randolph AFB, San Antonio Int
Airport, Canyon Lake, Kirby, Alamo Heights, Windcrest, Terrell
Hills, Bulverde, Garden Ridge, Shavano Park and Hollywood Park.
Instruction:
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.
Stay away or be swept away. River banks and culverts can become
unstable and unsafe.
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.
Area Description:
Bexar, TX; Comal, TX; Guadalupe, TX
Forcast Office:
NWS Austin/San Antonio TX
Sender:
w-nws.webmaster@noaa.gov