Heat Advisory
URGENT - WEATHER MESSAGE
National Weather Service Melbourne FL
1238 AM EDT Thu Aug 20 2026
FLZ041-044>046-053-058-141-144-154-159-164-247-254-259-264-347-447-
547-647-747-202300-
/O.NEW.KMLB.HT.Y.0022.260820T1400Z-260820T2300Z/
Inland Volusia-Northern Lake-Orange-Seminole-Osceola-Okeechobee-
Coastal Volusia-Southern Lake-Coastal Indian River-Coastal Saint
Lucie-Coastal Martin-Inland Northern Brevard-Inland Indian River-
Inland Saint Lucie-Inland Martin-Mainland Northern Brevard-
Northern Brevard Barrier Islands-Inland Southern Brevard-Mainland
Southern Brevard-Southern Brevard Barrier Islands-
Including the cities of Vero Beach, Palm Bay west of I 95, Saint
Cloud, Mims, Maitland, Deltona, Celebration, Melbourne, Clermont,
Basinger, Tradition, Rockledge, Stuart, Port Saint Lucie, Merritt
Island Wildlife Refuge, Sebastian, Winter Park, Viera West, Melbourne
Beach, Winter Springs, Casselberry, Daytona Beach, Fort Drum,
Titusville, Indiantown, Tavares, Port Saint John, Okeechobee,
Sanford, Fort Pierce, Altamonte Springs, Deland, Canaveral Groves,
Satellite Beach, Ormond Beach, Leesburg, Mascotte, Fellsmere,
Playalinda Beach, Groveland, Apopka, Orlando, Kissimmee, Cocoa, Union
Park, Oviedo, Jensen Beach, Eustis, Mount Dora, Cocoa Beach, New
Smyrna Beach, Saint Lucie West, Debary, and Hobe Sound
1238 AM EDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO 7 PM EDT THIS
EVENING...
* WHAT...Heat index values 108 to 112 expected.
* WHERE...A portion of east central Florida.
* WHEN...From 10 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. Young children and
pets should never be left unattended in vehicles under any
circumstances. Take extra precautions if you work or spend time
outside. When possible reschedule strenuous activities to early
morning or evening. Know the signs and symptoms of heat exhaustion
and heat stroke. Wear lightweight and loose fitting clothing when
possible. 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.
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.
&&
$$
Wishard
URGENT - WEATHER MESSAGE
National Weather Service Jacksonville FL
231 AM EDT Thu Aug 20 2026
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-GAZ153-
154-162-163-165-166-264-350-364-202300-
/O.CON.KJAX.HT.Y.0025.260820T1500Z-260820T2300Z/
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.
&&
$$
For more information, visit us at www.weather.gov/jax
NELSON
URGENT - WEATHER MESSAGE
National Weather Service Miami FL
108 AM EDT Thu Aug 20 2026
FLZ063-066>075-168-172>174-202200-
/O.NEW.KMFL.HT.Y.0036.260820T1500Z-260820T2200Z/
Glades-Hendry-Inland Palm Beach County-Metro Palm Beach County-
Coastal Collier County-Inland Collier County-Inland Broward
County-Metro Broward County-Inland Miami-Dade County-Metropolitan
Miami Dade-Mainland Monroe-Coastal Palm Beach County-Coastal
Broward County-Coastal Miami Dade County-Far South Miami-Dade
County-
Including the cities of Sandalfoot Cove, Kendall, West Palm
Beach, Bunker Hill, Riviera Beach, Ortona, Jupiter, Kendale
Lakes, Sawgrass Mills Mal, Lakeport, Clewiston, Boynton Beach,
Hendry Correctional, Delray Beach, Felda, East Naples, Miccosukee
Indian Reservation, Immokalee, Coral Springs, Lake Worth, Royal
Palm Beach, Sunniland, Pembroke Pines, Orange Tree, Marco Island,
Miles City, Muse, Fort Lauderdale, Redland, Carol City, Hialeah,
The Acreage, Brighton Seminole, Florida Gardens, North Naples,
Hollywood, Shark Valley Obs Tower, Buckhead Ridge, Caloosa,
Golden Gate, Pa-Hay Okee Overlook, Boca Raton, Pompano Beach,
Moore Haven, Naples, Miami, Lion Country Safari Park, Belle
Glade, Royal Palm Hammock, Palm Beach Gardens, North Blocks
Golde, Mahogany Hammock, Palmdale, Greenacres City, Sunrise,
Marco Island Airport, Miramar, Northwest Cape Sable, Deerfield
Beach, Fortymile Bend, Royal Palm Ranger, Bonita Shores, Davie,
Florida City, and Wellington
108 AM EDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 6 PM EDT THIS
EVENING...
* WHAT...Heat index values up to 110 expected.
* WHERE...Portions of southeast, southern, and southwest Florida.
* WHEN...From 11 AM this morning to 6 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.
&&
$$
WR
URGENT - WEATHER MESSAGE
National Weather Service Tampa Bay Ruskin FL
1209 AM EDT Thu Aug 20 2026
FLZ043-050-052-056-057-061-139-142-148-149-151-155-160-162-165-239-
242-248-249-251-255-260-262-265-202300-
/O.NEW.KTBW.HT.Y.0020.260820T1500Z-260820T2300Z/
Sumter-Pinellas-Polk-Hardee-Highlands-DeSoto-Coastal Levy-Coastal
Citrus-Coastal Hernando-Coastal Pasco-Coastal Hillsborough-
Coastal Manatee-Coastal Sarasota-Coastal Charlotte-Coastal Lee-
Inland Levy-Inland Citrus-Inland Hernando-Inland Pasco-Inland
Hillsborough-Inland Manatee-Inland Sarasota-Inland Charlotte-
Inland Lee-
Including the cities of Hernando Beach, Inverness, Crystal River,
Port Charlotte, Avon Park, Yankeetown, Bushnell, Port Richey, The
Villages, Tampa, Bronson, Zephyrhills, Anna Maria Island, Zolfo
Springs, Williston, Lakeland, Punta Gorda, Brooksville, Parrish,
Wauchula, Bayport, Dade City, Wildwood, Captiva, North Port, Sebring,
Bradenton, Lehigh Acres, Sarasota, Myakka City, Lakewood Ranch,
Homosassa, Bowling Green, Arcadia, Winter Haven, Chiefland, Fort
Myers, Cedar Key, Westchase, Sanibel, Plant City,
Apollo Beach, St. Petersburg, Largo, Hudson, Sun City Center,
Englewood, Spring Hill, Lake Panasoffkee, Placid Lakes, Venice,
Brandon, Clearwater, Babcock Ranch, and Cape Coral
1209 AM EDT Thu Aug 20 2026
...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EDT THIS
EVENING...
* WHAT...Heat index values up to 109 expected.
* WHERE...Portions of southwest and west central Florida.
* WHEN...From 11 AM this morning to 7 PM EDT this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
