Alert archive / Florida / Areal Flood Advisories in 2026

Areal Flood Advisory 21, NWS Melbourne, FL

May 12, 2026Brevard County, Florida

NWS Melbourne, FL issued this areal flood advisory at May 12, 2026, 7:49 PM EDT for Brevard County, Florida. It was in force for 86 min.

The area

The counties it named.

The facts

Issued: May 12, 2026, 7:49 PM EDT (23:49 UTC)
Expired: May 12, 2026, 9:15 PM EDT
In force: 86 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

County Brevard County, FL

The radar

The Melbourne radar (KMLB), 21 km from the middle of the area, began a volume at 23:52 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.

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 11.8 hours before the alert went out and 180 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 311 J/kg
Mixed-layer CIN: -80 J/kg
Mixed-layer LCL: 1149 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 103 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.7

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood 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 areal flood advisory went out at May 12, 7:43 PM EDT, 6 minutes earlier.

Area forecast discussion, May 12, 7:43 PM EDT, 6 minutes before

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In the hours before

Special weather statement, May 12, 3:26 PM EDT, 4 hours 23 minutes before

Special Weather Statement
National Weather Service Melbourne FL
326 PM EDT Tue May 12 2026

FLZ053-122000-
Osceola FL-
326 PM EDT Tue May 12 2026

...A STRONG THUNDERSTORM WILL IMPACT CENTRAL OSCEOLA COUNTY THROUGH
400 PM EDT...

At 326 PM EDT, Doppler radar was tracking a strong thunderstorm 10
miles south of Poinciana, or 11 miles northeast of Lake Wales. This
thunderstorm was nearly stationary.

HAZARD...Wind gusts up to 50 mph and half inch hail.

SOURCE...Radar indicated.

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

This storm will remain over mainly rural areas of central Osceola
County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

If on or near Lake Kissimmee, get out of the water and move indoors
or inside a vehicle. Remember, lightning can strike out to 10 miles
from the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not
be caught on the water in a thunderstorm.

&&

LAT...LON 2806 8146 2806 8144 2804 8143 2801 8138
      2804 8136 2807 8137 2807 8135 2808 8135
      2809 8145 2812 8145 2816 8139 2796 8126
      2793 8134 2795 8134 2798 8138 2800 8139
      2800 8142 2803 8144 2804 8146
TIME...MOT...LOC 1926Z 246DEG 2KT 2801 8145

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

Leahy

Special weather statement, May 12, 3:34 PM EDT, 4 hours 15 minutes before

Special Weather Statement
National Weather Service Melbourne FL
334 PM EDT Tue May 12 2026

FLZ159-259-122000-
Coastal St. Lucie FL-Inland St. Lucie FL-
334 PM EDT Tue May 12 2026

...A STRONG THUNDERSTORM WILL IMPACT EAST CENTRAL ST. LUCIE COUNTY
THROUGH 400 PM EDT...

At 334 PM EDT, Doppler radar was tracking a strong thunderstorm over
White City. This thunderstorm was nearly stationary.

HAZARD...Wind gusts up to 40 mph and half inch 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...
Walton, Fort Pierce, White City, Saint Lucie Nuclear Power Plant, and
Port Saint Lucie River Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 2729 8042 2736 8044 2749 8026 2729 8017
TIME...MOT...LOC 1934Z 257DEG 3KT 2735 8036

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

Leahy

Special weather statement, May 12, 3:51 PM EDT, 3 hours 58 minutes before

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Special weather statement, May 12, 4:09 PM EDT, 3 hours 40 minutes before

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Local storm report, May 12, 4:26 PM EDT, 3 hours 23 minutes before

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Local storm report, May 12, 5:30 PM EDT, 2 hours 19 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
May 11, 8:08 PM EDT	Special Weather Statement	MLB	Indian River	52 min
May 11, 8:16 PM EDT	Special Marine Warning	MLB		59 min
May 11, 8:31 PM EDT	Special Marine Warning	MLB		44 min
May 11, 9:05 PM EDT	Special Marine Warning	MLB		55 min
May 11, 9:11 PM EDT	Special Weather Statement	MLB	Saint Lucie	49 min
May 11, 9:15 PM EDT	Special Marine Warning	MLB		60 min
May 11, 9:26 PM EDT	Severe Thunderstorm Warning	MLB	Saint Lucie	34 min
May 11, 9:29 PM EDT	Special Marine Warning	MLB		46 min
May 11, 10:08 PM EDT	Special Marine Warning	MLB		67 min
May 11, 10:56 PM EDT	Areal Flood Advisory	MLB	Martin	94 min
May 12, 3:08 AM EDT	Small Craft Advisory	MLB		35 hr
May 12, 10:51 AM EDT	Special Weather Statement	MLB	Seminole	39 min
May 12, 11:10 AM EDT	Severe Thunderstorm Warning	MLB	Orange, Seminole	20 min
May 12, 11:26 AM EDT	Severe Thunderstorm Warning	MLB	Seminole	34 min
May 12, 11:48 AM EDT	Special Marine Warning	MLB		57 min
May 12, 11:57 AM EDT	Severe Thunderstorm Warning	MLB	Orange, Seminole	48 min
May 12, 12:18 PM EDT	Severe Thunderstorm Warning	MLB	Orange, Seminole	42 min
May 12, 12:20 PM EDT	Special Weather Statement	MLB	Brevard	25 min
May 12, 12:34 PM EDT	Special Marine Warning	MLB		56 min
May 12, 12:45 PM EDT	Special Marine Warning	MLB		34 min
May 12, 12:46 PM EDT	Special Weather Statement	MLB	Brevard	29 min
May 12, 12:56 PM EDT	Severe Thunderstorm Warning	MLB	Brevard, Orange, Seminole	34 min
May 12, 1:27 PM EDT	Severe Thunderstorm Warning	MLB	Brevard, Orange	48 min
May 12, 1:32 PM EDT	Special Marine Warning	MLB		45 min
May 12, 2:24 PM EDT	Special Marine Warning	MLB		66 min
May 12, 3:11 PM EDT	Special Marine Warning	MLB		64 min
May 12, 3:21 PM EDT	Special Weather Statement	MLB	Okeechobee	24 min
May 12, 3:26 PM EDT	Special Weather Statement	MLB	Osceola	34 min
May 12, 3:34 PM EDT	Special Weather Statement	MLB	Saint Lucie	26 min
May 12, 3:43 PM EDT	Severe Thunderstorm Warning	MLB	Osceola	47 min
May 12, 3:49 PM EDT	Special Marine Warning	MLB		56 min
May 12, 3:51 PM EDT	Special Weather Statement	MLB	Osceola	39 min
May 12, 4:01 PM EDT	Special Marine Warning	MLB		59 min
May 12, 4:09 PM EDT	Special Weather Statement	MLB	Lake	36 min
May 12, 4:36 PM EDT	Areal Flood Advisory	MLB	Saint Lucie	2 hr
May 12, 4:46 PM EDT	Areal Flood Advisory	MLB	Volusia	119 min
May 12, 4:53 PM EDT	Special Marine Warning	MLB		67 min
May 12, 5:26 PM EDT	Areal Flood Advisory	MLB	Indian River, Saint Lucie	2 hr
May 12, 5:48 PM EDT	Special Marine Warning	MLB		45 min
May 12, 7:05 PM EDT	Areal Flood Advisory	MLB	Brevard, Orange	85 min
May 12, 7:41 PM EDT	Special Marine Warning	MLB		50 min

Nearby

Areal Flood Advisories in Florida, 2026 Every areal flood 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.