A tropical weather disturbance in the southwest Gulf of Mexico could become the hurricane season's second named storm, forecasters warn.

The disturbance, which is currently located in the Bay of Campeche in the extreme southwest corner of the Gulf, is moving toward the northwest with little change in organization or strength since yesterday.

It could produce heavy rain over southern and eastern Mexico, the National Hurricane Center said in its 7 a.m. Sunday statement.

An Air Force Reserve aircraft is scheduled to investigate the disturbance later day, if necessary.

The chance of development over the next five days is 60 percent.