The Gulf Coast region, including major cities like Houston and Corpus Christi, faces a significant risk of flash flooding due to heavy rainfall and slow-moving thunderstorms. The Level 3 out of 4 flood threat indicates the potential for widespread and locally catastrophic flooding, particularly in low-lying and urban areas. Coastal winds may also pose hazards, especially in areas near the Gulf of Mexico. The combination of tropical moisture and a stalled cold front increases the likelihood of prolonged rainfall, exacerbating flood risks. Millions of residents across Texas, Louisiana, Mississippi, and Georgia are advised to remain vigilant as conditions evolve.