Corpus Christi, Texas – Drivers across South Texas could encounter flooded roads and rapidly changing conditions within hours as rounds of tropical downpours spread inland, bringing a significant flash flood threat from the Rio Grande Valley to the upper Texas coast.
According to the NOAA Weather Prediction Center, a Moderate Risk (Level 3 of 4) for excessive rainfall covers much of southern and southeastern Texas through Tuesday morning. The highest concern stretches from Brownsville and Corpus Christi north through Victoria, with additional flood concerns extending toward Galveston, Houston, Lufkin and parts of East Texas.
Rainfall rates may overwhelm drainage systems in a short period of time, especially in urban locations and low-lying areas. Water-covered roads, flooded underpasses and rapidly rising creeks are possible during the heaviest downpours. Emergency officials urge motorists to avoid driving through flooded roadways and to have multiple ways to receive warnings.
The same storm system is also increasing flood concerns farther east. Central Mississippi, including the Jackson and Vicksburg areas, sits within a Moderate Risk zone where repeated thunderstorms could trigger flash flooding. Meridian, Natchez, McComb and Hattiesburg remain within a broader Slight Risk area.
The Weather Prediction Center warns that intense rainfall rates are likely to be the primary hazard. While not every community will experience flooding, locations repeatedly hit by thunderstorms could see dangerous water rises in a matter of minutes.
Residents across Texas and Mississippi should closely monitor radar and warnings through tonight. Additional Flash Flood Warnings may be issued with little notice as storms redevelop and move across the region.
