A flood watch is in effect in southeastern Texas and Louisiana as up to 8 inches of rain has already fallen, with more rain expected through Friday. Gov. Abbott issued a disaster declaration for 59 counties as severe weather and flooding threatened parts of Texas. "Extreme" river flooding is expected through next week across central and east Texas basins exacerbated by heavy rainfall and reservoir releases. State responders aided with high-water rescues and urged residents to follow emergency officials' guidance. Additional rounds of rain are forecast through Friday, prolonging flood risks across southeastern Texas.