In a worst-case scenario for the U.S., a major hurricane could hit Florida's Gulf coast, but forecasters say it would have to clear several hurdles.

A shift in Tropical Depression 19's track has significantly impacted meteorologists' predictions about its potential to form into Hurricane Sara.

Tropical Storm Sara is expected to form in the western Caribbean and still has a chance of taking a turn to the northeast toward Florida, the National Hurricane Center said. Here’s the