Authorities say high winds caused by Tropical Storm Lee are partly responsible for keeping wildfires ablaze across parts of east and central Texas.
Local and state firefighting crews in the US scrambled to contain the blazes on Sunday that have destroyed homes and forced evacuations in the parched sections of Texas.
Winds were from the north to north-east at 20 to 30 mph with gusts to 40 mph and relative humidity at 20 to 30 percent.
The National Weather Service says south, central and east Texas were all under "red flag" warnings for critical fire conditions. No injuries were reported.
The wildfire threat became so dire around Austin area that officials called for any available firefighters in the area to report for duty.