Immediate Severe Weather Threat Has Passed San Antonio

Flash flooding, high water still possible due to heavy rain

Memorial Day Forecast for San Antonio (KSAT 12)

11:30 PM Sunday -- The immediate severe weather threat for the San Antonio area has passed. However, a line of strong storms continues to move east across our easternmost communities with a threat of gusty winds, heavy rain, and frequent lightning.

Active Severe Weather Watches:

Severe Thunderstorm Watch for a portion of the KSAT viewing area until 4 AM Monday (KSAT 12)

There is a Severe Thunderstorm Watch in place for a portion of the KSAT viewing area until 4 AM Monday, May 25, 2020. This does not include San Antonio or Bexar County.


Here are some key forecast takeaways as the holiday weekend continues:

  • A squall line will continue to move east and away from San Antonio Sunday night
  • Even though the threat of damaging winds and hail is over, flash flooding will be possible through roughly 2 AM in and around San Antonio
  • Memorial Day itself will be generally quiet with mostly cloudy skies, mugginess, and an isolated storm possible
  • Once again, storm chances will increase in the evening and nighttime hours on Monday
  • Rain chances will be lower by Tuesday afternoon and through the middle of the week
  • However, storm chances will pick back up toward the end of the week as an area of low pressure drifts around South Texas

If you plan to be out and about, check your KSAT Weather app and make sure to enable notifications. On the app, you’ll find radar, the latest forecast from KSAT’s meteorologists, and we’ll notify you when we are streaming live over the app.

For more on the weekend’s forecast, watch this short video from Your Weather Authority Team:

Check out the latest satellite imaging tracking storms in the San Antonio area here:

Continued weather coverage:

Keep up with the latest alerts from the KSAT Meteorologists with their Twitter stream below:

Tweets by ksatweather


About the Authors:

Justin Horne is a meteorologist and reporter for KSAT 12 News. When severe weather rolls through, Justin will hop in the KSAT 12 Storm Chaser to safely bring you the latest weather conditions from across South Texas. On top of delivering an accurate forecast, Justin often reports on one of his favorite topics: Texas history.

Kaiti Blake is a child weather-geek-turned-meteorologist. A member of the KSAT Weather Authority, Kaiti is a co-host of the Whatever the Weather video podcast. After graduating from Texas Tech University, Kaiti worked at WJTV 12 in Jackson, Mississippi and KTAB in Abilene.