Florida, Georgia Moderate Heat Advisory | Effective 08/18/2026 16:17

Headline: 
Heat Advisory issued August 18 at 7:17PM EDT until August 19 at 8:00PM EDT by NWS Jacksonville FL
Event: 
Heat Advisory
Urgency: 
Expected
Effective: 
August 18, 2026 - 4:17pm
Expires: 
August 19, 2026 - 2:00am
Description: 
* WHAT...Heat index values up to 111 expected. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Instruction: 
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Area Description: 
Suwannee; Baker; Inland Nassau; Union; Bradford; Gilchrist; Inland Flagler; Eastern Hamilton; Coastal Nassau; Coastal Duval; Eastern Clay; Eastern Alachua; Eastern Putnam; Coastal Flagler; Eastern Marion; Western Hamilton; Trout River; Western Clay; Northeast Coastal St. Johns; Western Alachua; Western Putnam; Central Marion; Northern Columbia; South Central Duval; Southeast Coastal St. Johns; Western Marion; Southeastern Columbia; Western Duval; Northern Inland St. Johns; Southwestern Columbia; Southern Inland St. Johns; Western St. Johns; Inland Glynn; Coastal Glynn; Echols; Inland Camden; Coastal Camden
Forcast Office: 
NWS Jacksonville FL
Sender: 
w-nws.webmaster@noaa.gov