Life‑Threatening Flash Flooding Hits Texas Hill Country
Forecasters say slow‑moving, moisture‑rich storms are producing extreme rain rates that could cause more catastrophic runoff in vulnerable hill and urban areas.
Overview
- The NWS Weather Prediction Center issued multiple mesoscale precipitation discussions that flagged dangerous flash flooding unfolding west of San Antonio and near Hondo as of early Tuesday.
- Radar and MRMS data show storms producing rainfall rates of 2 to 4+ inches per hour in the Hill Country and model guidance indicates localized 4 to 7+ inch totals are possible over the next few hours.
- Slow storm motions, low flash‑flood guidance in steep Hill Country terrain, and high run‑off efficiency have led forecasters to expect considerable to potentially catastrophic impacts to low‑lying neighborhoods, small watersheds, and urban drainage corridors.
- The heavy‑rain threat is not limited to central Texas; overlapping mesoscale discussions also warned of likely flash flooding across southeast Texas into southwest Louisiana, portions of the Carolinas and Georgia, North Texas, and parts of the Desert Southwest.
- Forecasters are relying on high‑resolution models and radar QPE to track training cells and evolving troughs and they warn residents in vulnerable areas to follow local NWS warnings and avoid driving through flooded roads.