Tropical Storm Katia became the third named storm currently in the Atlantic on Wednesday, joining Irma and Jose.
Katia formed in the early morning in the southern Gulf of Mexico. Forecasters with the National Hurricane Center said the storm is expected to stay off the coast of Mexico through Friday morning.
As of 10 a.m. CDT, Katia was 135 miles east of Tampico, Mexico, and 175 miles north of Veracruz, Mexico. It was moving southeast at 5 mph with maximum sustained winds of 45 mph.
The storm is strengthening and forecast to become a hurricane by Friday.
Forecasters said the storm is expected to turn southeast within 24 hours and move in that direction through Thursday. Then, forecasters expect it to turn southwest Friday and make landfall in Mexico over the weekend.
Katia is forecast to produce total rain accumulations of 5 to 10 inches over northern Veracruz, and 2 to 5 inches over far southern Tamaulipas, northeast Puebla and southern Veracruz through Saturday morning. In isolated parts of northern Veracruz, up to 15 inches of rain are possible.
Katia is the 11th named storm this season in the Atlantic.
Tropical Storm Jose was moving west and was about 1,135 miles east of the Lesser Antilles. It was behind Hurricane Irma, which is a Category 5 storm, and in the Caribbean and headed toward Florida.