Heat Advisory Starts 10 AM Tuesday in Orange, Brevard, Volusia and 17 More East Central Florida Zones
The National Weather Service Melbourne FL record calls for heat index values of 108 to 112 across 20 zones, from Volusia south to Martin and west to Okeechobee, before the advisory lifts at 8 PM EDT the same evening.
4 reports on this incident · first at Aug 18, 2026, 3:00 a.m. ET
Hazard products are revised and cancelled as conditions change. Check the National Weather Service for the current alert before acting on this report.
We last searched for new coverage of this at Aug 18, 2026, 1:41 a.m. ET — checked 8h ago.
Earlier reports
Aug 18, 2026, 3:56 a.m. ET
Heat Advisory Starts 10 AM in East Central Florida, Lifts at 8 PM
A Heat Advisory covering portions of east central Florida is not yet in force: the official National Weather Service Melbourne FL advisory record puts it into effect at 10 AM EDT on August 18, 2026, about six hours after the product was issued, and ends it at 8 PM EDT the same evening. The record's own wording is "From 10 AM this morning to 8 PM EDT this evening." After 8 PM EDT on August 18, the advisory has expired.
According to the record, issued at 12:38 AM EDT on August 18, 2026, heat index values of 108 to 112 are expected. The advisory is at the advisory level and covers 20 zones: 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 and Southern Brevard Barrier Islands.
Cities the record lists inside the affected areas include Satellite Beach, Stuart, Maitland, Casselberry, Cocoa Beach, Okeechobee, Union Park, Canaveral Groves, Eustis, Mount Dora, Saint Cloud, Sanford, Leesburg, Altamonte Springs, Hobe Sound, Melbourne Beach, Indiantown, Mascotte, Titusville, Playalinda Beach, Port Saint John, Port Saint Lucie, Debary, Melbourne and Deltona.
The National Weather Service Melbourne FL record states that hot temperatures and high humidity may cause heat illnesses.
Precautions listed in the record: 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, and when possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke, and wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the record notes, 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. The record adds: "Heat stroke is an emergency! Call 9 1 1."
Aug 18, 2026, 3:28 a.m. ET
Heat Advisory for Orange, Volusia, Lake and 17 More East Central Florida Zones Expires 8 PM Tuesday
Hot temperatures and high humidity may cause heat illnesses across portions of east central Florida, according to the Heat Advisory record issued by the National Weather Service Melbourne FL and published in the agency's raw text products archive.
The advisory was issued at 12:38 a.m. EDT on Tuesday, Aug. 18, 2026, and covers 20 zones. It takes effect at 10 a.m. EDT and expires at 8 p.m. EDT the same day, Tuesday, Aug. 18, 2026. Readers seeing this after 8 p.m. EDT on Aug. 18, 2026 should note that the advisory period described here has ended unless the National Weather Service issues a new product.
The zones listed in the record are 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 and Southern Brevard Barrier Islands.
The record states that heat index values of 108 to 112 are expected during the advisory window. Cities named in the product include Melbourne, Port Saint Lucie, Sanford, Deltona, Titusville, Leesburg, Eustis, Satellite Beach, Stuart, Maitland, Casselberry, Cocoa Beach, Okeechobee, Union Park, Canaveral Groves, Mount Dora, Saint Cloud, Altamonte Springs, Hobe Sound, Melbourne Beach, Indiantown, Mascotte, Playalinda Beach, Port Saint John and Debary.
The National Weather Service advises drinking plenty of fluids, staying in an air-conditioned room, staying out of the sun, and checking up on relatives and neighbors. The record stresses that young children and pets should never be left unattended in vehicles under any circumstances, and that people who work or spend time outside should take extra precautions and, when possible, reschedule strenuous activities to early morning or evening. It also urges people to know the signs and symptoms of heat exhaustion and heat stroke and to wear lightweight and loose fitting clothing when possible.
To reduce risk during outdoor work, the record notes, 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!" the advisory states. "Call 9 1 1."
Aug 18, 2026, 3:00 a.m. ETFirst report
Heat Advisory: Heat Index of 108 to 112 Expected Across 20 East Central Florida Zones
A Heat Advisory is in effect from 10 AM EDT to 8 PM EDT on August 18, 2026, across 20 zones in east central Florida, according to the advisory record issued by the National Weather Service Melbourne FL at 12:38 AM EDT on August 18, 2026.
That record says heat index values of 108 to 112 are expected. It describes the affected area as portions of east central Florida, and gives the timing as "from 10 AM this morning to 8 PM EDT this evening."
The zones named are 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 and Southern Brevard Barrier Islands.
Cities listed in the record include Satellite Beach, Stuart, Maitland, Casselberry, Cocoa Beach, Okeechobee, Union Park, Canaveral Groves, Eustis, Mount Dora, Saint Cloud, Sanford, Leesburg, Altamonte Springs, Hobe Sound, Melbourne Beach, Indiantown, Mascotte, Titusville, Playalinda Beach, Port Saint John, Port Saint Lucie, Debary, Melbourne and Deltona.
The advisory states that hot temperatures and high humidity may cause heat illnesses.
Precautions in the record: 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. Anyone who works or spends time outside should take extra precautions, wear lightweight and loose fitting clothing when possible, and reschedule strenuous activities to early morning or evening where that can be done. The weather service also advises knowing the signs and 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, the advisory notes. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency; call 9 1 1.
The alert is classified at the advisory level in the National Weather Service record. The source address given for the record is https://tgftp.nws.noaa.gov/data/raw/.
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