More than 20 million people from central Texas to central Mississippi are under flood watches as tropical moisture fuels dangerous rainfall.
The Weather Prediction Center issued a Level 3 out of 4 flood threat for four consecutive days, a streak not seen since July 2025.
Water rescues have already been reported in parts of central and south-central Texas amid heavy rain.
AI-generated summary was reviewed by a CNN editor.
Texas and parts of the Gulf Coast are facing a major flood threat this week from a multi-day heavy rainfall event supercharged by a system that could become the first tropical storm of the Atlantic season as it pulls in record amounts of moisture for June.
