Authorities say a Houston woman has died and 12 construction workers were injured in two separate incidents related to the thunderstorms sweeping across Texas.

Houston fire officials say they found a dead woman lying next to fallen branches and power lines. They could not immediately determine her cause of death. 

A contractor company spokeswoman says 12 construction workers were taken to hospitals after tent collapsed on them while they were sheltering from the weather under it in La Porte, Texas, about 20 miles southeast of Houston.

Swaths of Central and Southeast Texas continue under a flash flood watch as thunderstorms move across the state.

A flash flood warning is in effect for Austin and surrounding counties until midmorning after nearly two inches of rain fell early Tuesday.