Summary
A tropical storm warning is in effect for parts of Louisiana as a system expected to become Tropical Storm Arthur threatens the Gulf Coast with days of heavy rain.
More than 26 million people are under flood watches from South Texas to Mississippi as the storm could dump up to a foot of rain in some areas.
The system has already killed at least two people in Texas and triggered over 130 flooding reports across the region since Sunday.
AI-generated summary was reviewed by a CNN editor.
A tropical…