Florida summers are always hot, but the last week or so has been particularly balmy in the Sunshine State, with all but one Florida county under heat advisories on Thursday, July 31. Many recent ...

An early-season heat dome is building over the Gulf of Mexico and will bring a week of unusual heat and humidity to southern states, from Texas to Florida, and southward into Mexico and the Caribbean.

A "heat dome," similar to a heat wave, is a high-pressure system trapping hot air and causing prolonged high temperatures. Heat domes differ from heat waves in their duration and the stagnant nature ...