The National Weather Service has issued heat advisories for much of the panhandle and northern Florida – pretty much along the I-10 corridor – through 7 PM EDT today. Cities in the advisory include Tallahassee, Marianna, De Funiak Springs, Perry, Lake City, and Jacksonville.
A period of heat indices between 108F and 112F is expected, according to a statement from the NWS in Tallahassee.
The heat index is a measure of how hot it really feels when the relative humidity and air temperature are factored in. The combination of the two can make it feel worse than it already is (if that’s possible), and have the potential to be life threatening if precautions are not taken.
Currently, at the surface, high pressure is sitting over the central Gulf of Mexico. Dewpoints are in the mid 70s, pushing into the upper 70s in some spots (gross). The predominant flow is mainly out of the east across northern Florida. Based on the 8 AM EDT (12 Z) soundings from Jacksonville and Tallahassee, precipitable water amounts range between 1.5 and 1.9 inches. It’s still fairly juicy outside. With low rain chances expected today due to the dry air aloft, this will allow for temps to climb into the mid to upper 90s in many locations today.
It’s important to stay cool and hydrated as much as possible. If you have to be outside, take breaks in the shade and drink plenty of non-caffeinated and non-alcoholic beverages.