A storm is not a tornado, but it is a category 4 storm, and is likely to hit the Gulf Coast and the Southeast before sunset Sunday night.
There is no storm in sight on Monday, though it could be worse, according to the National Weather Service.
The storm will move northeast across Texas Sunday evening, passing over the Texas Gulf Coast late Sunday afternoon.
The forecast calls for rain and flash flooding in the region Sunday night and early Monday.
The storm will bring heavy rain and gusty winds to parts of Texas, including Houston, which has seen more than 1,100 inches of rain in the past 24 hours, according a Weather Service report.
Houston will see at least 11 inches of additional rain, according the National Hurricane Center.