511
WWUS72 KJAX 151549
NPWJAX

URGENT - WEATHER MESSAGE
National Weather Service Jacksonville FL
1149 AM EDT Sat Aug 15 2026

GAZ152>154-165-166-160000-
/O.NEW.KJAX.HT.Y.0021.260816T1500Z-260817T0000Z/
/O.CON.KJAX.XH.W.0004.000000T0000Z-260816T0000Z/
Brantley-Inland Glynn-Coastal Glynn-Inland Camden-Coastal Camden-
Including the cities of Atkinson, Hickox, Glynn Haven, Country Club
Estate, Dover Bluff, Waynesville, Woodbine, Tarboro,
Dungeness, Sea Island, Nahunta, Raybon, Kingsland, St. Simons,
Thalmann, Hoboken, Hortense, Jekyll Island, Waverly, Dock Junction,
and Colesburg
1149 AM EDT Sat Aug 15 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT SUNDAY...
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

* WHAT...For the Extreme Heat Warning, dangerously hot conditions
  with heat index values up to 113. For the Heat Advisory, heat index
  values up to 112 expected.

* WHERE...Brantley, Coastal Camden, Coastal Glynn, Inland Camden, and
  Inland Glynn Counties.

* WHEN...For the Extreme Heat Warning, until 8 PM EDT this evening.
  For the Heat Advisory, from 11 AM to 8 PM EDT Sunday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events. 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.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

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.

Stay cool, stay hydrated, stay informed.

&&

$$

FLZ021-023-024-030-031-035-038-120-124-125-132-136>138-140-220-225-
232-233-236-237-240-322-325-333-340-422-425-433-522-533-633-
GAZ132>136-149-151-162-163-250-264-350-364-160000-
/O.NEW.KJAX.HT.Y.0021.260816T1500Z-260817T0000Z/
/O.CON.KJAX.HT.Y.0020.000000T0000Z-260816T0000Z/
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-Coffee-Jeff Davis-Bacon-Appling-Wayne-Atkinson-
Pierce-Echols-Clinch-Northern Ware-Northeastern Charlton-Southern
Ware-Western Charlton-
Including the cities of Butler Beach, Burbank, Espanola, Alma, Lynne,
Palatka, Fruit Cove, Lake Butler, Blue Springs, Doctortown, Needmore,
Bakersville, Anthony, Trenton, Ocala Airport, Jacksonville, Belmont,
Bryceville, Arlington, Houston, Amelia City, Anastasia, Newnans Lake,
Plant Hatch, Lakeside, Willacoochee, Doctors Inlet, McAlpin,
Hazlehurst, Statenville, Andalusia, Gardi, Archer, Jasper, Oleno
State Park, Dupont Center, Bunnell, West Lake, Baxley, Bostwick, Race
Pond, Pine Grove, Picolata, Ocala, Saint Augustine, Palm Valley,
Suwannee River Station, Ponte Vedra Beach, Douglas, Gainesville,
Tallyrand, San Marco, Newberry, Switzerland, New River, Needham,
Newburn, High Springs, Lake City, Homeland, Saint Augustine Shore,
Jesup, New Lacy, Live Oak, Jennings, Gainesville Airport, Middleburg,
Columbia, Winokur, Weirsdale, Macclenny, White Springs, Winfield,
Normandy, Moss Bluff, Stephen Foster State Park, Carraway, Folkston,
Olustee, Starke, Fernandina Beach, Saint Augustine South, Homerville,
Bellair, Ratliff, Pearson, Lulu, Palm Coast, Waycross, Green Cove
Springs, Kings Ferry, Riverside, Orange Park, Axson, Durbin,
Hilliard, Suwannee
Springs, Oceanway, Ortega, Yulee, Watertown, Suwannee Valley, St.
George, Blackshear, and Saint Augustine Beach
1149 AM EDT Sat Aug 15 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT SUNDAY...
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING...

* WHAT...For the first Heat Advisory, heat index values up to 110.
  For the second Heat Advisory, heat index values up to 110 expected.

* WHERE...Portions of northeast and northern Florida and southeast
  Georgia.

* WHEN...For the first Heat Advisory, until 8 PM EDT this evening.
  For the second Heat Advisory, from 11 AM to 8 PM EDT Sunday.

* 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.

&&

$$

For more information, visit us at www.weather.gov/jax

CORLESS