⚠️ Flash Flood Warning – Bexar, TX; Medina, TX – Saturday, June 20, 2026

Flash Flood Warning issued June 20 at 2:04AM CDT until June 20 at 6:00AM CDT by NWS Austin/San Antonio TX

Details

FFWEWX

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

* Flash Flood Warning for…
West Central Bexar County in south central Texas…
East Central Medina County in south central Texas…

* Until 600 AM CDT.

* At 204 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 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…
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.

Instructions

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

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.