713
WWUS72 KJAX 161556
NPWJAX

URGENT - WEATHER MESSAGE
National Weather Service Jacksonville FL
1156 AM EDT Sun Aug 16 2026

GAZ153-154-165-166-170000-
/O.NEW.KJAX.XH.W.0005.260817T1500Z-260818T0000Z/
/O.CON.KJAX.HT.Y.0021.000000T0000Z-260817T0000Z/
Inland Glynn-Coastal Glynn-Inland Camden-Coastal Camden-
Including the cities of Waverly, Sea Island, Woodbine, Country
Club Estate, St. Simons, Thalmann, Dock Junction, Tarboro, Jekyll
Island, Kingsland, Dungeness, Colesburg, Dover Bluff, and Glynn Haven
1156 AM EDT Sun Aug 16 2026

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

* WHAT...For the Heat Advisory, heat index values up to 111. For the
  Extreme Heat Warning, dangerously hot conditions with heat index
  values up to 113 expected.

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

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

* 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.

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.

&&

$$

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>136-149-151-152-162-163-250-264-350-364-170000-
/O.NEW.KJAX.HT.Y.0022.260817T1500Z-260818T0000Z/
/O.CON.KJAX.HT.Y.0021.000000T0000Z-260817T0000Z/
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-Brantley-Echols-Clinch-Northern Ware-Northeastern Charlton-
Southern Ware-Western Charlton-
Including the cities of Palm Valley, Espanola, Hazlehurst, Riverside,
Axson, Bakersville, Folkston, Hickox, Pine Grove, Archer, Palm Coast,
Trenton, Gardi, Newburn, Anthony, Lake City, Bostwick, High Springs,
Ortega, West Lake, Alma, Homerville, Gainesville Airport, Butler
Beach, Winokur, Bryceville, Homeland, Needham, Houston, Macclenny,
White Springs, Kings Ferry, Amelia City, Suwannee Valley, Hilliard,
Waycross, Waynesville, Gainesville, New Lacy, Olustee, Ratliff,
Belmont, Jesup, Douglas, Doctors Inlet, Atkinson, Green Cove Springs,
Palatka, Jacksonville, Ocala Airport, Hoboken, Lakeside, Orange Park,
Baxley, Blue Springs, Starke, Winfield, Fernandina Beach, Live Oak,
Carraway, Jasper, Weirsdale, Saint Augustine Shore, Normandy,
Blackshear, Newnans Lake, Fruit Cove, Oleno State Park, Saint
Augustine, Andalusia, Middleburg, Nahunta, Race Pond, New
River, St. George, Bellair, Ponte Vedra Beach, Ocala, Raybon,
Needmore, Jennings, Picolata, Lulu, Switzerland, Suwannee River
Station, Suwannee Springs, Arlington, Anastasia, Willacoochee,
Bunnell, Tallyrand, San Marco, Hortense, Columbia, Newberry, Moss
Bluff, Saint Augustine Beach, Durbin, Plant Hatch, Statenville,
Lynne, Dupont Center, Pearson, Burbank, McAlpin, Lake Butler,
Watertown, Doctortown, Saint Augustine South, Stephen Foster State
Park, Yulee, and Oceanway
1156 AM EDT Sun Aug 16 2026

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

* WHAT...For the first Heat Advisory, heat index values up to 111.
  For the second Heat Advisory, heat index values up to 112 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 Monday.

* 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