A stormy patch of sky in the Caribbean Sea is threatening to become the 18th named storm of the Atlantic hurricane ... wide zone of low pressure south of Jamaica, warning that it has a 90% chance of evolving into a tropical cyclone by Friday.

Environmental conditions conducive for tropical development in the Caribbean Deep convection will move westward south of Jamaica and could quickly become a Tropical Depression in the next two

A broad area of low pressure in the western Caribbean Sea is becoming better organized and the National Hurricane Center is initiating advisories on the system as of 4 p.m. Sunday.

The US hurricane season is flexing for its next assault as the Atlantic stirs amid fears of Tropical Storm Sara. Eastern states, including Florida still reeling from Hurricanes Helene and Milton, are back on alert for disruptive weather.