A thunderstorm cluster over the southeastern Gulf of Mexico is likely to become a tropical storm in the next two days, The Associated Press reported Thursday.

National Weather Service meteorologist Fred Zeigler said the system could bring rain to coastal Mississippi and Louisiana but it’s too early to tell whether it will mean anything worse.

Most models used to track such systems are struggling to predict whether it will move toward Brownsville, Texas, or the Florida Panhandle, he said.