Heat Alerts Issued Across Florida and South Plains; Conflicting Details Reported
Officials warn of dangerous heat and possible heat illnesses, though reports differ on alert level, timing, and issuing office.
Every severe weather report published for Palm Beach, Florida, newest first.
Officials warn of dangerous heat and possible heat illnesses, though reports differ on alert level, timing, and issuing office.
An official Heat Advisory from the National Weather Service Melbourne FL is in effect from 10 AM to 7 PM EDT on August 20, 2026.
A Heat Advisory is in effect on August 20, 2026, with heat index values up to 110 expected.
The National Weather Service in Melbourne warns of heat index values 108 to 112 in Inland Volusia, Northern Lake, Orange and 17 other zones from 10 AM to 8 PM EDT Wednesday.
National Weather Service Miami FL says the advisory runs from 11 AM to 7 PM EDT Wednesday and covers 15 zones across all of South Florida.
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.
The National Weather Service Miami FL heat advisory runs from 11:00 AM to 7:00 PM EDT on August 18, 2026, across 15 South Florida zones, with heat index values of 105 to 112 expected.
The National Weather Service Miami FL expects heat index values of 105 to 110 from 11 AM to 7 PM EDT on August 17, 2026.
The National Weather Service office in Melbourne, Florida, expects heat index values of 108 to 112 from 10 AM to 8 PM EDT on Monday, August 17, 2026. The advisory expires at 8 PM EDT that evening.
The Heat Advisory across east central Florida now runs longer than first issued, spanning from 10 AM to 8 PM EDT on August 16, 2026.
A Heat Advisory for all of South Florida on August 16 now runs longer, remaining in effect until 7 p.m. EDT.
The National Weather Service has issued updated impact guidance as heat index values reach up to 112 degrees.
Apparent temperatures could reach triple digits across much of South Florida through early evening, with the advisory now spelling out the illnesses those conditions can cause.