10 advisories in effect for 10 regions in the area

• Charlton, Northeastern, Western

  Heat Advisory

  URGENT - WEATHER MESSAGE National Weather Service Jacksonville FL 231 AM EDT Thu Aug 20 2026 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-Clinch-Inland Camden-Coastal Camden-Northeastern Charlton-Southern Ware-Western Charlton- Including the cities of Dover Bluff, Sea Island, Anastasia, Green Cove Springs, Burbank, Needmore, Orange Park, Anthony, Dungeness, Dock Junction, White Springs, Kingsland, Jekyll Island, Saint Augustine, New River, High Springs, Live Oak, Andalusia, Jasper, Tarboro, St. George, Country Club Estate, Ocala Airport, Kings Ferry, Saint Augustine Shore, Oleno State Park, Middleburg, Belmont, Amelia City, Stephen Foster State Park, Fruit Cove, Newberry, Gainesville Airport, Lakeside, Espanola, Carraway, Saint Augustine Beach, Durbin, Jennings, Lulu, Watertown, Butler Beach, Winokur, Ponte Vedra Beach, Lynne, Lake City, Ortega, Blue Springs, Switzerland, Saint Augustine South, Jacksonville, Homerville, Starke, Bakersville, Macclenny, West Lake, Colesburg, Fernandina Beach, Winfield, Waverly, Trenton, Picolata, Yulee, Bunnell, Thalmann, McAlpin, Ratliff, Palm Valley, Doctors Inlet, Suwannee Valley, Woodbine, Houston, Hilliard, Gainesville, Bostwick, San Marco, Archer, Folkston, Tallyrand, Statenville, Newburn, Homeland, Race Pond, Normandy, Palm Coast, Suwannee River Station, Columbia, Glynn Haven, St. Simons, Lake Butler, Ocala, Suwannee Springs, Bellair, Olustee, Moss Bluff, Arlington, Oceanway, Newnans Lake, Weirsdale, Dupont Center, Bryceville, Palatka, and Riverside 231 AM EDT Thu Aug 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EDT THIS EVENING... * WHAT...Heat index values up to 112 expected. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...From 11 AM this morning to 7 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, 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! Call 9 1 1.

• Bradford

  Heat Advisory

  URGENT - WEATHER MESSAGE National Weather Service Jacksonville FL 231 AM EDT Thu Aug 20 2026 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-Clinch-Inland Camden-Coastal Camden-Northeastern Charlton-Southern Ware-Western Charlton- Including the cities of Dover Bluff, Sea Island, Anastasia, Green Cove Springs, Burbank, Needmore, Orange Park, Anthony, Dungeness, Dock Junction, White Springs, Kingsland, Jekyll Island, Saint Augustine, New River, High Springs, Live Oak, Andalusia, Jasper, Tarboro, St. George, Country Club Estate, Ocala Airport, Kings Ferry, Saint Augustine Shore, Oleno State Park, Middleburg, Belmont, Amelia City, Stephen Foster State Park, Fruit Cove, Newberry, Gainesville Airport, Lakeside, Espanola, Carraway, Saint Augustine Beach, Durbin, Jennings, Lulu, Watertown, Butler Beach, Winokur, Ponte Vedra Beach, Lynne, Lake City, Ortega, Blue Springs, Switzerland, Saint Augustine South, Jacksonville, Homerville, Starke, Bakersville, Macclenny, West Lake, Colesburg, Fernandina Beach, Winfield, Waverly, Trenton, Picolata, Yulee, Bunnell, Thalmann, McAlpin, Ratliff, Palm Valley, Doctors Inlet, Suwannee Valley, Woodbine, Houston, Hilliard, Gainesville, Bostwick, San Marco, Archer, Folkston, Tallyrand, Statenville, Newburn, Homeland, Race Pond, Normandy, Palm Coast, Suwannee River Station, Columbia, Glynn Haven, St. Simons, Lake Butler, Ocala, Suwannee Springs, Bellair, Olustee, Moss Bluff, Arlington, Oceanway, Newnans Lake, Weirsdale, Dupont Center, Bryceville, Palatka, and Riverside 231 AM EDT Thu Aug 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EDT THIS EVENING... * WHAT...Heat index values up to 112 expected. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...From 11 AM this morning to 7 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, 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! Call 9 1 1.

• Baker

  Heat Advisory

  URGENT - WEATHER MESSAGE National Weather Service Jacksonville FL 231 AM EDT Thu Aug 20 2026 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-Clinch-Inland Camden-Coastal Camden-Northeastern Charlton-Southern Ware-Western Charlton- Including the cities of Dover Bluff, Sea Island, Anastasia, Green Cove Springs, Burbank, Needmore, Orange Park, Anthony, Dungeness, Dock Junction, White Springs, Kingsland, Jekyll Island, Saint Augustine, New River, High Springs, Live Oak, Andalusia, Jasper, Tarboro, St. George, Country Club Estate, Ocala Airport, Kings Ferry, Saint Augustine Shore, Oleno State Park, Middleburg, Belmont, Amelia City, Stephen Foster State Park, Fruit Cove, Newberry, Gainesville Airport, Lakeside, Espanola, Carraway, Saint Augustine Beach, Durbin, Jennings, Lulu, Watertown, Butler Beach, Winokur, Ponte Vedra Beach, Lynne, Lake City, Ortega, Blue Springs, Switzerland, Saint Augustine South, Jacksonville, Homerville, Starke, Bakersville, Macclenny, West Lake, Colesburg, Fernandina Beach, Winfield, Waverly, Trenton, Picolata, Yulee, Bunnell, Thalmann, McAlpin, Ratliff, Palm Valley, Doctors Inlet, Suwannee Valley, Woodbine, Houston, Hilliard, Gainesville, Bostwick, San Marco, Archer, Folkston, Tallyrand, Statenville, Newburn, Homeland, Race Pond, Normandy, Palm Coast, Suwannee River Station, Columbia, Glynn Haven, St. Simons, Lake Butler, Ocala, Suwannee Springs, Bellair, Olustee, Moss Bluff, Arlington, Oceanway, Newnans Lake, Weirsdale, Dupont Center, Bryceville, Palatka, and Riverside 231 AM EDT Thu Aug 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EDT THIS EVENING... * WHAT...Heat index values up to 112 expected. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...From 11 AM this morning to 7 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, 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! Call 9 1 1.

• Alachua, Eastern, Western

  Heat Advisory

  URGENT - WEATHER MESSAGE National Weather Service Jacksonville FL 231 AM EDT Thu Aug 20 2026 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-Clinch-Inland Camden-Coastal Camden-Northeastern Charlton-Southern Ware-Western Charlton- Including the cities of Dover Bluff, Sea Island, Anastasia, Green Cove Springs, Burbank, Needmore, Orange Park, Anthony, Dungeness, Dock Junction, White Springs, Kingsland, Jekyll Island, Saint Augustine, New River, High Springs, Live Oak, Andalusia, Jasper, Tarboro, St. George, Country Club Estate, Ocala Airport, Kings Ferry, Saint Augustine Shore, Oleno State Park, Middleburg, Belmont, Amelia City, Stephen Foster State Park, Fruit Cove, Newberry, Gainesville Airport, Lakeside, Espanola, Carraway, Saint Augustine Beach, Durbin, Jennings, Lulu, Watertown, Butler Beach, Winokur, Ponte Vedra Beach, Lynne, Lake City, Ortega, Blue Springs, Switzerland, Saint Augustine South, Jacksonville, Homerville, Starke, Bakersville, Macclenny, West Lake, Colesburg, Fernandina Beach, Winfield, Waverly, Trenton, Picolata, Yulee, Bunnell, Thalmann, McAlpin, Ratliff, Palm Valley, Doctors Inlet, Suwannee Valley, Woodbine, Houston, Hilliard, Gainesville, Bostwick, San Marco, Archer, Folkston, Tallyrand, Statenville, Newburn, Homeland, Race Pond, Normandy, Palm Coast, Suwannee River Station, Columbia, Glynn Haven, St. Simons, Lake Butler, Ocala, Suwannee Springs, Bellair, Olustee, Moss Bluff, Arlington, Oceanway, Newnans Lake, Weirsdale, Dupont Center, Bryceville, Palatka, and Riverside 231 AM EDT Thu Aug 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EDT THIS EVENING... * WHAT...Heat index values up to 112 expected. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...From 11 AM this morning to 7 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, 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! Call 9 1 1.

• Glynn, Coastal, Inland

  Heat Advisory

  URGENT - WEATHER MESSAGE National Weather Service Jacksonville FL 231 AM EDT Thu Aug 20 2026 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-Clinch-Inland Camden-Coastal Camden-Northeastern Charlton-Southern Ware-Western Charlton- Including the cities of Dover Bluff, Sea Island, Anastasia, Green Cove Springs, Burbank, Needmore, Orange Park, Anthony, Dungeness, Dock Junction, White Springs, Kingsland, Jekyll Island, Saint Augustine, New River, High Springs, Live Oak, Andalusia, Jasper, Tarboro, St. George, Country Club Estate, Ocala Airport, Kings Ferry, Saint Augustine Shore, Oleno State Park, Middleburg, Belmont, Amelia City, Stephen Foster State Park, Fruit Cove, Newberry, Gainesville Airport, Lakeside, Espanola, Carraway, Saint Augustine Beach, Durbin, Jennings, Lulu, Watertown, Butler Beach, Winokur, Ponte Vedra Beach, Lynne, Lake City, Ortega, Blue Springs, Switzerland, Saint Augustine South, Jacksonville, Homerville, Starke, Bakersville, Macclenny, West Lake, Colesburg, Fernandina Beach, Winfield, Waverly, Trenton, Picolata, Yulee, Bunnell, Thalmann, McAlpin, Ratliff, Palm Valley, Doctors Inlet, Suwannee Valley, Woodbine, Houston, Hilliard, Gainesville, Bostwick, San Marco, Archer, Folkston, Tallyrand, Statenville, Newburn, Homeland, Race Pond, Normandy, Palm Coast, Suwannee River Station, Columbia, Glynn Haven, St. Simons, Lake Butler, Ocala, Suwannee Springs, Bellair, Olustee, Moss Bluff, Arlington, Oceanway, Newnans Lake, Weirsdale, Dupont Center, Bryceville, Palatka, and Riverside 231 AM EDT Thu Aug 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EDT THIS EVENING... * WHAT...Heat index values up to 112 expected. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...From 11 AM this morning to 7 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, 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! Call 9 1 1.

• Duval, Coastal, Inland

  Heat Advisory

  URGENT - WEATHER MESSAGE National Weather Service Jacksonville FL 231 AM EDT Thu Aug 20 2026 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-Clinch-Inland Camden-Coastal Camden-Northeastern Charlton-Southern Ware-Western Charlton- Including the cities of Dover Bluff, Sea Island, Anastasia, Green Cove Springs, Burbank, Needmore, Orange Park, Anthony, Dungeness, Dock Junction, White Springs, Kingsland, Jekyll Island, Saint Augustine, New River, High Springs, Live Oak, Andalusia, Jasper, Tarboro, St. George, Country Club Estate, Ocala Airport, Kings Ferry, Saint Augustine Shore, Oleno State Park, Middleburg, Belmont, Amelia City, Stephen Foster State Park, Fruit Cove, Newberry, Gainesville Airport, Lakeside, Espanola, Carraway, Saint Augustine Beach, Durbin, Jennings, Lulu, Watertown, Butler Beach, Winokur, Ponte Vedra Beach, Lynne, Lake City, Ortega, Blue Springs, Switzerland, Saint Augustine South, Jacksonville, Homerville, Starke, Bakersville, Macclenny, West Lake, Colesburg, Fernandina Beach, Winfield, Waverly, Trenton, Picolata, Yulee, Bunnell, Thalmann, McAlpin, Ratliff, Palm Valley, Doctors Inlet, Suwannee Valley, Woodbine, Houston, Hilliard, Gainesville, Bostwick, San Marco, Archer, Folkston, Tallyrand, Statenville, Newburn, Homeland, Race Pond, Normandy, Palm Coast, Suwannee River Station, Columbia, Glynn Haven, St. Simons, Lake Butler, Ocala, Suwannee Springs, Bellair, Olustee, Moss Bluff, Arlington, Oceanway, Newnans Lake, Weirsdale, Dupont Center, Bryceville, Palatka, and Riverside 231 AM EDT Thu Aug 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EDT THIS EVENING... * WHAT...Heat index values up to 112 expected. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...From 11 AM this morning to 7 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, 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! Call 9 1 1.

• Camden, Coastal, Inland

  Heat Advisory

  URGENT - WEATHER MESSAGE National Weather Service Jacksonville FL 231 AM EDT Thu Aug 20 2026 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-Clinch-Inland Camden-Coastal Camden-Northeastern Charlton-Southern Ware-Western Charlton- Including the cities of Dover Bluff, Sea Island, Anastasia, Green Cove Springs, Burbank, Needmore, Orange Park, Anthony, Dungeness, Dock Junction, White Springs, Kingsland, Jekyll Island, Saint Augustine, New River, High Springs, Live Oak, Andalusia, Jasper, Tarboro, St. George, Country Club Estate, Ocala Airport, Kings Ferry, Saint Augustine Shore, Oleno State Park, Middleburg, Belmont, Amelia City, Stephen Foster State Park, Fruit Cove, Newberry, Gainesville Airport, Lakeside, Espanola, Carraway, Saint Augustine Beach, Durbin, Jennings, Lulu, Watertown, Butler Beach, Winokur, Ponte Vedra Beach, Lynne, Lake City, Ortega, Blue Springs, Switzerland, Saint Augustine South, Jacksonville, Homerville, Starke, Bakersville, Macclenny, West Lake, Colesburg, Fernandina Beach, Winfield, Waverly, Trenton, Picolata, Yulee, Bunnell, Thalmann, McAlpin, Ratliff, Palm Valley, Doctors Inlet, Suwannee Valley, Woodbine, Houston, Hilliard, Gainesville, Bostwick, San Marco, Archer, Folkston, Tallyrand, Statenville, Newburn, Homeland, Race Pond, Normandy, Palm Coast, Suwannee River Station, Columbia, Glynn Haven, St. Simons, Lake Butler, Ocala, Suwannee Springs, Bellair, Olustee, Moss Bluff, Arlington, Oceanway, Newnans Lake, Weirsdale, Dupont Center, Bryceville, Palatka, and Riverside 231 AM EDT Thu Aug 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EDT THIS EVENING... * WHAT...Heat index values up to 112 expected. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...From 11 AM this morning to 7 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, 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! Call 9 1 1.

• Nassau, Coastal, Inland

  Heat Advisory

  URGENT - WEATHER MESSAGE National Weather Service Jacksonville FL 231 AM EDT Thu Aug 20 2026 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-Clinch-Inland Camden-Coastal Camden-Northeastern Charlton-Southern Ware-Western Charlton- Including the cities of Dover Bluff, Sea Island, Anastasia, Green Cove Springs, Burbank, Needmore, Orange Park, Anthony, Dungeness, Dock Junction, White Springs, Kingsland, Jekyll Island, Saint Augustine, New River, High Springs, Live Oak, Andalusia, Jasper, Tarboro, St. George, Country Club Estate, Ocala Airport, Kings Ferry, Saint Augustine Shore, Oleno State Park, Middleburg, Belmont, Amelia City, Stephen Foster State Park, Fruit Cove, Newberry, Gainesville Airport, Lakeside, Espanola, Carraway, Saint Augustine Beach, Durbin, Jennings, Lulu, Watertown, Butler Beach, Winokur, Ponte Vedra Beach, Lynne, Lake City, Ortega, Blue Springs, Switzerland, Saint Augustine South, Jacksonville, Homerville, Starke, Bakersville, Macclenny, West Lake, Colesburg, Fernandina Beach, Winfield, Waverly, Trenton, Picolata, Yulee, Bunnell, Thalmann, McAlpin, Ratliff, Palm Valley, Doctors Inlet, Suwannee Valley, Woodbine, Houston, Hilliard, Gainesville, Bostwick, San Marco, Archer, Folkston, Tallyrand, Statenville, Newburn, Homeland, Race Pond, Normandy, Palm Coast, Suwannee River Station, Columbia, Glynn Haven, St. Simons, Lake Butler, Ocala, Suwannee Springs, Bellair, Olustee, Moss Bluff, Arlington, Oceanway, Newnans Lake, Weirsdale, Dupont Center, Bryceville, Palatka, and Riverside 231 AM EDT Thu Aug 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EDT THIS EVENING... * WHAT...Heat index values up to 112 expected. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...From 11 AM this morning to 7 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, 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! Call 9 1 1.

• Ware, Northern, Southern

  Heat Advisory

  URGENT - WEATHER MESSAGE National Weather Service Jacksonville FL 231 AM EDT Thu Aug 20 2026 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-Clinch-Inland Camden-Coastal Camden-Northeastern Charlton-Southern Ware-Western Charlton- Including the cities of Dover Bluff, Sea Island, Anastasia, Green Cove Springs, Burbank, Needmore, Orange Park, Anthony, Dungeness, Dock Junction, White Springs, Kingsland, Jekyll Island, Saint Augustine, New River, High Springs, Live Oak, Andalusia, Jasper, Tarboro, St. George, Country Club Estate, Ocala Airport, Kings Ferry, Saint Augustine Shore, Oleno State Park, Middleburg, Belmont, Amelia City, Stephen Foster State Park, Fruit Cove, Newberry, Gainesville Airport, Lakeside, Espanola, Carraway, Saint Augustine Beach, Durbin, Jennings, Lulu, Watertown, Butler Beach, Winokur, Ponte Vedra Beach, Lynne, Lake City, Ortega, Blue Springs, Switzerland, Saint Augustine South, Jacksonville, Homerville, Starke, Bakersville, Macclenny, West Lake, Colesburg, Fernandina Beach, Winfield, Waverly, Trenton, Picolata, Yulee, Bunnell, Thalmann, McAlpin, Ratliff, Palm Valley, Doctors Inlet, Suwannee Valley, Woodbine, Houston, Hilliard, Gainesville, Bostwick, San Marco, Archer, Folkston, Tallyrand, Statenville, Newburn, Homeland, Race Pond, Normandy, Palm Coast, Suwannee River Station, Columbia, Glynn Haven, St. Simons, Lake Butler, Ocala, Suwannee Springs, Bellair, Olustee, Moss Bluff, Arlington, Oceanway, Newnans Lake, Weirsdale, Dupont Center, Bryceville, Palatka, and Riverside 231 AM EDT Thu Aug 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EDT THIS EVENING... * WHAT...Heat index values up to 112 expected. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...From 11 AM this morning to 7 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, 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! Call 9 1 1.

• Union

  Heat Advisory

  URGENT - WEATHER MESSAGE National Weather Service Jacksonville FL 231 AM EDT Thu Aug 20 2026 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-Clinch-Inland Camden-Coastal Camden-Northeastern Charlton-Southern Ware-Western Charlton- Including the cities of Dover Bluff, Sea Island, Anastasia, Green Cove Springs, Burbank, Needmore, Orange Park, Anthony, Dungeness, Dock Junction, White Springs, Kingsland, Jekyll Island, Saint Augustine, New River, High Springs, Live Oak, Andalusia, Jasper, Tarboro, St. George, Country Club Estate, Ocala Airport, Kings Ferry, Saint Augustine Shore, Oleno State Park, Middleburg, Belmont, Amelia City, Stephen Foster State Park, Fruit Cove, Newberry, Gainesville Airport, Lakeside, Espanola, Carraway, Saint Augustine Beach, Durbin, Jennings, Lulu, Watertown, Butler Beach, Winokur, Ponte Vedra Beach, Lynne, Lake City, Ortega, Blue Springs, Switzerland, Saint Augustine South, Jacksonville, Homerville, Starke, Bakersville, Macclenny, West Lake, Colesburg, Fernandina Beach, Winfield, Waverly, Trenton, Picolata, Yulee, Bunnell, Thalmann, McAlpin, Ratliff, Palm Valley, Doctors Inlet, Suwannee Valley, Woodbine, Houston, Hilliard, Gainesville, Bostwick, San Marco, Archer, Folkston, Tallyrand, Statenville, Newburn, Homeland, Race Pond, Normandy, Palm Coast, Suwannee River Station, Columbia, Glynn Haven, St. Simons, Lake Butler, Ocala, Suwannee Springs, Bellair, Olustee, Moss Bluff, Arlington, Oceanway, Newnans Lake, Weirsdale, Dupont Center, Bryceville, Palatka, and Riverside 231 AM EDT Thu Aug 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EDT THIS EVENING... * WHAT...Heat index values up to 112 expected. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...From 11 AM this morning to 7 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, 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! Call 9 1 1.