There are three systems from the Atlantic to the Pacific Ocean that could threaten the U.S. with tropical rain and wind.
The most imminent storm is tropical depression eight, which is forecast to become Tropical Storm Hanna. It is forecast to bring heavy rain and flash flooding to Texas.
Because this storm is expected to become Tropical Storm Hanna in the next 24 hours, a tropical storm watch has been issued from Houston to Corpus Christi, Texas, and down to near the Mexican coast.
The system will be slow moving, so flash flooding will be the biggest threat in Texas and the west Gulf Coast. However, this weak storm system is not expected to be particularly strong and winds wont be the biggest threat.
More than 6 inches of rain is possible in some areas.