Alert archive / Florida / Heat Advisories in 2026

Heat Advisory 2, NWS Melbourne, FL

June 18, 202610 counties in Florida

NWS Melbourne, FL issued this heat advisory at Jun 18, 2026, 11:46 PM EDT for 10 counties in Florida. It took effect at Jun 19, 2026, 11:00 AM EDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Jun 18, 2026, 11:46 PM EDT (03:46 UTC)
In effect from: Jun 19, 2026, 11:00 AM EDT
Expired: Jun 19, 2026, 7:00 PM EDT
In force: 8 hr
Issued by: NWS Melbourne, FL

Counties Brevard County, FL, Indian River County, FL, Lake County, FL, Martin County, FL, Okeechobee County, FL, Orange County, FL, Osceola County, FL, Saint Lucie County, FL, Seminole County, FL, Volusia County, FL

The radar

The Melbourne radar (KMLB), 30 km from the middle of the area, began a volume at 03:47 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Melbourne, FL wrote its last area forecast discussion before this heat advisory went out at Jun 18, 7:30 PM EDT, 4 hours 16 minutes earlier.

Area forecast discussion, Jun 18, 7:30 PM EDT, 4 hours 16 minutes before

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In the hours before

Special weather statement, Jun 18, 5:56 PM EDT, 5 hours 50 minutes before

Special Weather Statement
National Weather Service Melbourne FL
556 PM EDT Thu Jun 18 2026

FLZ041-182215-
Inland Volusia FL-
556 PM EDT Thu Jun 18 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN VOLUSIA COUNTY
THROUGH 615 PM EDT...

At 555 PM EDT, Doppler radar was tracking a strong thunderstorm near
Barberville, moving northeast at 20 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Daytona Beach, Pierson, Barberville, DeLeon Springs, and Eldridge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Conditions are favorable for the development of weak, brief funnel
clouds. On rare occasions they can briefly touch down, producing wind
gusts over 50 mph. If a funnel cloud is spotted move indoors and
report your sighting to the National Weather Service.

Frequent cloud to ground lightning is occurring with this storm. Seek
safe shelter inside a sturdy building or hard-topped vehicle.
Remember, lightning can strike beyond 10 miles away from a
thunderstorm. When thunder roars, go indoors!

&&

LAT...LON 2927 8142 2926 8142 2927 8115 2919 8110
      2904 8137 2920 8149
TIME...MOT...LOC 2155Z 228DEG 19KT 2918 8135

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

Law

Special weather statement, Jun 18, 6:24 PM EDT, 5 hours 22 minutes before

Special Weather Statement
National Weather Service Melbourne FL
624 PM EDT Thu Jun 18 2026

FLZ045-053-182300-
Osceola FL-Orange FL-
624 PM EDT Thu Jun 18 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTH CENTRAL ORANGE AND
NORTHWESTERN OSCEOLA COUNTIES THROUGH 700 PM EDT...

At 623 PM EDT, Doppler radar was tracking a strong thunderstorm over
Poinciana, or near West Lake Toho, moving north at 25 mph.

HAZARD...Wind gusts of 50 to 55 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Kissimmee, West Lake Toho, Intercession City, Buena Ventura Lakes,
and Poinciana.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm. Seek
safe shelter inside a sturdy building or hard-topped vehicle.
Remember, lightning can strike beyond 10 miles away from a
thunderstorm. When thunder roars, go indoors!

&&

LAT...LON 2840 8151 2835 8129 2809 8143 2809 8145
      2814 8145 2814 8152 2818 8153 2820 8152
      2821 8153
TIME...MOT...LOC 2223Z 193DEG 22KT 2818 8145

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...55 MPH

Law

Special weather statement, Jun 18, 6:43 PM EDT, 5 hours 3 minutes before

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Local storm report, Jun 18, 7:02 PM EDT, 4 hours 44 minutes before

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Special weather statement, Jun 18, 7:10 PM EDT, 4 hours 36 minutes before

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Local storm report, Jun 18, 7:51 PM EDT, 3 hours 55 minutes before

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The office that day

Everything else NWS Melbourne, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 19, 2:14 PM EDT	Special Weather Statement	MLB	Seminole	31 min
Jun 19, 2:47 PM EDT	Special Marine Warning	MLB		58 min
Jun 19, 2:47 PM EDT	Special Weather Statement	MLB	Volusia	43 min
Jun 19, 3:22 PM EDT	Special Marine Warning	MLB		23 min
Jun 19, 3:37 PM EDT	Special Marine Warning	MLB		98 min
Jun 19, 3:41 PM EDT	Special Weather Statement	MLB	Osceola	34 min
Jun 19, 4:13 PM EDT	Special Weather Statement	MLB	Okeechobee, Osceola	47 min
Jun 19, 4:27 PM EDT	Severe Thunderstorm Warning	MLB	Brevard, Osceola	33 min
Jun 19, 4:32 PM EDT	Special Marine Warning	MLB		58 min
Jun 19, 4:51 PM EDT	Severe Thunderstorm Warning	MLB	Brevard	39 min
Jun 19, 4:56 PM EDT	Special Weather Statement	MLB	Brevard, Indian River, Okeechobee	64 min
Jun 19, 5:07 PM EDT	Severe Thunderstorm Warning	MLB	Brevard	20 min
Jun 19, 5:22 PM EDT	Special Marine Warning	MLB		68 min
Jun 19, 5:43 PM EDT	Special Marine Warning	MLB		32 min
Jun 19, 6:00 PM EDT	Special Weather Statement	MLB	Okeechobee, Saint Lucie	45 min
Jun 19, 6:03 PM EDT	Special Weather Statement	MLB	Seminole	27 min
Jun 19, 6:28 PM EDT	Special Marine Warning	MLB		62 min
Jun 19, 6:42 PM EDT	Special Marine Warning	MLB		63 min

Nearby

Heat Advisories in Florida, 2026 Every heat advisory in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.