Rain from Tropical Storm Nicholas will spread from Mexico to Mobile.
The National Hurricane Center says the storm will gain some strength before making landfall in Texas.
"Nicholas will be moving over the warm waters of the western Gulf of Mexico during the next day or so, and this combined with a moist, unstable atmosphere favors strengthening," forecaster said.
Wind shear, however, is forecast to keep the system from becoming a hurricane. That is not out of the question, though.
"Although not explicitly shown in the intensity forecast, Nicholas could approach hurricane strength when it nears the northwest Gulf coast."
Nicholas is already sending rain over a wide area.
"Periods of heavy rainfall are expected to impact portions of the Texas and Louisiana coasts today through the middle of the week."
The Hurricane Center says significant rainfall amounts are possible, potentially resulting in areas of flooding.
Parts of Texas could see up to 20 inches of rain, while New Orleans is forecast to see up to four inches.
