A tropical storm may be developing in the Gulf. Models don't rule out U.S. impacts.

The Atlantic Ocean hasn’t seen a hurricane yet this year in a season that remains among the quietest on record, driven by a strong El Niño pattern that’s getting even stronger. But the Gulf of Mexico may be about to cook up a storm, and there’s at least some chance of U.S. impacts.The National Hurricane Center is monitoring a nascent disturbance in the Bay of Campeche, or southwestern Gulf of Mexico, west of the Yucatán Peninsula. The agency estimates development