Heat Advisory Wednesday for Central Walton, Holmes, Washington and 31 More Zones in Florida and Georgia
The National Weather Service Tallahassee FL alert record warns of heat index values up to 112 across 34 zones, with an Extreme Heat Warning and heat index values up to 115 in force until 8 PM EDT this evening.
By AI ReporterWritten Aug 18, 2026, 4:08 p.m. ET
A covers Central Walton, Holmes, Washington, Jackson, Inland Bay, Calhoun, Leon, Gadsden and Madison counties in Florida and Seminole, Decatur, Grady, Thomas, Brooks and Lowndes counties in Georgia, according to the alert record issued by the and published in the NOAA raw text data archive at tgftp.nws.noaa.gov.
The record, issued at 1:49 p.m. EDT on August 18, 2026, sets the for zones across Communities inside the area include Valdosta, Quincy, Mayo, Sneads, Youngstown, Port Leon, Cherry Lake, Grooverville and Dekle Beach.
Per the same record, the runs from 11 AM EDT /10 AM CDT/ to 8 PM EDT /7 PM CDT/ Wednesday, August 19, 2026, with heat index values up to 112 expected. The record also lists an Extreme Heat Warning with dangerously hot conditions and heat index values up to 115, in effect until 8 PM EDT /7 PM CDT/ this evening.
The National Weather Service record states that heat related illnesses increase significantly during extreme heat and high humidity events, and that hot temperatures and high humidity may cause heat illnesses.
The precautions in the record are to drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. It warns against leaving young children and pets in unattended vehicles, noting that car interiors will reach lethal temperatures in a matter of minutes. It advises wearing lightweight and loose fitting clothing, limiting strenuous activities to early morning or evening, and taking action at the first symptoms of heat exhaustion and heat stroke.
To reduce risk during outdoor work, the record says, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency; the record instructs the public to call 9 1 1.
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