287
WWUS72 KJAX 171633
NPWJAX

URGENT - WEATHER MESSAGE
National Weather Service Jacksonville FL
1233 PM EDT Mon Aug 17 2026

GAZ153-154-165-166-180900-
/O.NEW.KJAX.XH.W.0006.260818T1500Z-260819T0000Z/
/O.CON.KJAX.XH.W.0005.000000T0000Z-260818T0000Z/
Inland Glynn-Coastal Glynn-Inland Camden-Coastal Camden-
Including the cities of Woodbine, Kingsland, Colesburg, Dock
Junction, Jekyll Island, Glynn Haven, Thalmann, Country Club
Estate, Waverly, Dover Bluff, St. Simons, Dungeness, Sea Island,
and Tarboro
1233 PM EDT Mon Aug 17 2026

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

* WHAT...For the first Extreme Heat Warning, dangerously hot
  conditions with heat index values 110 to 115. For the second
  Extreme Heat Warning, dangerously hot conditions with heat index
  values 110 to 115 expected.

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

* WHEN...For the first Extreme Heat Warning, until 8 PM EDT this
  evening. For the second Extreme Heat Warning, from 11 AM to 8 PM
  EDT Tuesday.

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

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.

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

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.

&&

$$

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-GAZ162-
180900-
/O.NEW.KJAX.XH.W.0006.260818T1500Z-260819T0000Z/
/O.CON.KJAX.HT.Y.0022.000000T0000Z-260818T0000Z/
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-Echols-
Including the cities of Saint Augustine South, Fruit Cove, McAlpin,
Anastasia, Middleburg, Live Oak, Saint Augustine Shore, Suwannee
River Station, Oceanway, Starke, Oleno State Park, Macclenny, Kings
Ferry, Bellair, Newnans Lake, Gainesville, Archer, Lake Butler,
Houston, Columbia, San Marco, Arlington, Bostwick, Anthony, Olustee,
Burbank, High Springs, Tallyrand, Yulee, Suwannee Valley, Espanola,
Weirsdale, Fernandina Beach, Normandy, Needmore, Gainesville Airport,
Green Cove Springs, Picolata, Lakeside, Lynne, Blue Springs, Saint
Augustine, Bunnell, Moss Bluff, Statenville, Bryceville, Ponte Vedra
Beach, Ocala Airport, Winfield, Belmont, Butler Beach, Orange Park,
Dupont Center, Jacksonville, Bakersville, Jasper, Switzerland,
Hilliard, Ortega, Ratliff, Carraway, Saint Augustine Beach, Palm
Valley, Riverside, West Lake, Andalusia, Trenton, Doctors Inlet, New
River, Jennings, Lulu, Lake City, Newberry, Durbin, Watertown,
Suwannee Springs, White Springs, Amelia City, Palatka, Ocala,
Newburn, and Palm Coast
1233 PM EDT Mon Aug 17 2026

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

* WHAT...For the Heat Advisory, heat index values 108 to 112. For the
  Extreme Heat Warning, dangerously hot conditions with heat index
  values 110 to 115 expected.

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

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

* 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.

&&

$$

GAZ132>136-149-151-152-163-250-264-350-364-180900-
/O.NEW.KJAX.HT.Y.0023.260818T1500Z-260819T0000Z/
/O.CON.KJAX.HT.Y.0022.000000T0000Z-260818T0000Z/
Coffee-Jeff Davis-Bacon-Appling-Wayne-Atkinson-Pierce-Brantley-
Clinch-Northern Ware-Northeastern Charlton-Southern Ware-Western
Charlton-
Including the cities of Doctortown, St. George, Baxley, Hoboken,
New Lacy, Plant Hatch, Hazlehurst, Folkston, Homeland, Race Pond,
Jesup, Willacoochee, Waynesville, Gardi, Stephen Foster State Park,
Douglas, Waycross, Raybon, Needham, Winokur, Pearson, Hortense,
Blackshear, Atkinson, Axson, Pine Grove, Hickox, Alma, Nahunta, and
Homerville
1233 PM EDT Mon Aug 17 2026

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

* WHAT...For the first Heat Advisory, heat index values 108 to 112.
  For the second Heat Advisory, heat index values 108 to 112
  expected.

* WHERE...A portion of 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 Tuesday.

* 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.

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.

&&

$$

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

HESS