Alert archive / Florida / Flash Flood Warnings in 2026

Flash Flood Warning 6, NWS Melbourne, FL

September 7, 2026Orange County, Florida

NWS Melbourne, FL issued this flash flood warning at Sep 7, 2026, 5:56 PM EDT for Orange County, Florida. It was in force for 94 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Sep 7, 2026, 5:56 PM EDT (21:56 UTC)
Expired: Sep 7, 2026, 7:30 PM EDT
In force: 94 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon
Flood severity: None

County Orange County, FL

The radar

The Melbourne radar (KMLB), 96 km from the middle of the area, began a volume at 21:58 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 9.9 hours before the alert went out and 134 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: 2132 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 825 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

391 
WGUS52 KMLB 072156
FFWMLB
FLC095-072330-
/O.NEW.KMLB.FF.W.0006.260907T2156Z-260907T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Melbourne FL
556 PM EDT Mon Sep 7 2026

The National Weather Service in Melbourne has issued a

* Flash Flood Warning for...
  West Central Orange County in east central Florida...

* Until 730 PM EDT.

* At 556 PM EDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Between 2 and 3 inches of rain
  have fallen. Additional rainfall amounts up to 1 inch are possible
  in the warned area. Flash flooding is ongoing or expected to begin
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar indicated.

  IMPACT...Flash flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other poor
           drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Orlando, Ocoee, Windermere, Pine Hills, Lockhart, Orlovista,
  Clarcona, Gotha and Lake Butler.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 2864 8148 2858 8157 2849 8153 2854 8137
      2862 8142

FLASH FLOOD...RADAR INDICATED

$$

Wishard

1 follow-up statement

133 
WGUS72 KMLB 072322
FFSMLB

Flash Flood Statement
National Weather Service Melbourne FL
722 PM EDT Mon Sep 7 2026

FLC095-072332-
/O.EXP.KMLB.FF.W.0006.000000T0000Z-260907T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Orange FL-
722 PM EDT Mon Sep 7 2026

...FLASH FLOOD WARNING WILL EXPIRE AT 730 PM EDT THIS EVENING FOR
WEST CENTRAL ORANGE COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.

&&

LAT...LON 2864 8148 2858 8157 2849 8153 2854 8137
      2862 8142

$$

Wishard

What forecasters said that day

The local office's own words before this flash flood warning 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 flash flood warning went out at Sep 7, 2:57 PM EDT, 2 hours 59 minutes earlier. Its key messages:

Issued at 255 PM EDT Mon Sep 7 2026
A wet weather pattern persists through this week. The main storm hazard will continue to be the potential for locally heavy rainfall that could lead to mostly minor flooding. Otherwise, frequent lightning strikes and gusty winds up to 50 mph will also be possible.
Muggy conditions and seasonably hot temperatures in the upper 80s to low 90s will continue, with peak afternoon heat indices in the triple digits, but below Heat Advisory criteria.
There is Moderate risk of rip currents at all area beaches again today. Remember, always swim near a lifeguard and never swim alone.

Area forecast discussion, Sep 7, 2:57 PM EDT, 2 hours 59 minutes before

Area Forecast Discussion
National Weather Service Melbourne FL
257 PM EDT Mon Sep 7 2026

...New KEY MESSAGES, DISCUSSION, MARINE...

.KEY MESSAGES...
Issued at 255 PM EDT Mon Sep 7 2026

- A wet weather pattern persists through this week. The main
  storm hazard will continue to be the potential for locally heavy
  rainfall that could lead to mostly minor flooding. Otherwise,
  frequent lightning strikes and gusty winds up to 50 mph will
  also be possible.

- Muggy conditions and seasonably hot temperatures in the upper
  80s to low 90s will continue, with peak afternoon heat indices
  in the triple digits, but below Heat Advisory criteria.

- There is Moderate risk of rip currents at all area beaches again
  today. Remember, always swim near a lifeguard and never swim
  alone.

&&

.DISCUSSION...
Issued at 255 PM EDT Mon Sep 7 2026

Today-tonight... Upper level high pressure will remain in place
across the Great Plains as an upper level trough continues to push
farther offshore from the NE US coast with its axis sliding down the
Florida peninsula into central Florida. Short wave energy aloft will
continue to traverse across the Florida peninsula through the day,
aiding convection this afternoon and early evening. At the surface,
high pressure is surpressed to our south and east and a weak frontal
boundary is situated across north Florida and is very slowly
shifting southward. This frontal boundary may push into
north/central Florida tonight, but confidence remains low. Locally,
light westerly winds will shift onshore in the afternoon with the
formation of the east coast sea breeze and push inland. The sea
breeze has already formed this afternoon, mainly from Cape Canaveral
southward. The sea breeze collision is forecast to occur along the I-
95 corridor this afternoon/early evening. Storm motion will be light
and north to northwesterly around 10 mph, which will bring activity
back towards the coast and out into the Atlantic.

An earlier start to convection today, as scattered showers and
storms formed across the west coast of Florida and moved into east
central Florida through late morning. Additional storms have moved
into east central Florida and are currently heading toward the
eastern Coast, mainly from Cape Canaveral southward, with trailing
storms around Lake Okeechobee area.  Scattered to numerous showers
and storms are forecast to form this afternoon (PoP 70-80%). Highest
coverage will be along the I-95 corridor this afternoon into early
evening. An earlier start to convection today, with scattered
showers and storms moving across east central Florida, mainly
Kissimmee to Melbourne northward, late this morning through early
this afternoon. Forecast soundings show a moist profile, although
not as moist as it has been the past couple of days, with PW values
of 2.0-2.3". The environment supports convection, with plenty of
instability (MUCAPE of 1800-2200 J/kg), adequate buoyancy (lifted
index of -5 to -6), and sufficient downdraft potential (DCAPE 500-
800 J/kg). Temperatures aloft are slightly warmer than they were
yesterday (-6 to -6.5C at 500 mb). Because of this, main storm
hazards will be frequent lightning, gusty winds of 40-50 mph, and
torrential downpours capable of 2-4" in a relatively short period of
time, promoting minor/nuisance flooding in urban and poor drainage
areas. The Weather Prediction Center (WPC) has a Marginal (level 1
of 4) Risk for excessive rainfall for all of east central Florida
today.

Seasonable and humid today, with  afternoon highs in the upper 80s
to low 90s. These temperatures combined with high humidity will
produce peak heat indices of 100-107F. Warm and muggy conditions
will continue overnight, with lows in the low to mid 70s.

Tuesday-Sunday... Upper level high pressure across the Great Plains
will shift eastward through mid week as the trough off the eastern
US coast shifts farther eastward, with the trough axis remaining
over the central Florida through Tuesday. At the surface, a weak
frontal boundary across north Florida may push farther southward
into north-central to central Florida Tuesday before washing out.
Mostly diurnal convection through the period with fairly high rain
chances through the period, 40-70% Tuesday, and 60-70% Wednesday-
Sunday. Storm motion will be fairly weak and erratic, however some
activity will periodically push back towards the coast, especially
with stronger boundary collisions. Storm impacts will be similar to
today, with locally heavy rainfall continuing to be a concern.
Seasonable temperatures and humid conditions are forecast each day,
with highs in the upper 80s to low 90s and heat indices of 100-107.
Warm and muggy conditions will continue overnight, with lows in the
low to mid 70s.

&&

.MARINE...
Issued at 255 PM EDT Mon Sep 7 2026

Today-Friday... Generally favorable boating conditions through the
period. Surface high pressure has been pushed south/east of the
local waters leaving a fairly weak pgrad in place. A weak frontal
boundary will move into north FL early today and continue to settle
further south tonight/Tue toward/into central FL. Westerly flow
today will become S/SE at 10-12 KT this afternoon as the east coast
sea breeze forms. With the advancing boundary, winds tonight will
shift offshore south of the Cape and more N/NE northward thru the
night. On Tuesday, winds will shift south to southeast with speeds
increasing at 10-12 kts with the sea breeze development each
afternoon through the period. Expect earlier initiation of storms
developing over land and pushing off of the coast today with initial
isolated to scattered storms becoming locally numerous to
widespread. Diurnal offshore- moving showers/storms through mid-
late week. A few strong storms possible with primary impacts of
frequent lightning, gusty winds in excessive of 34 KT or greater,
and heavy downpours. Coverage of storms will be fairly high early
to mid week. Seas locally higher in the vicinity of storms. Seas
1-2 ft thru tonight, building to 2-4 ft again by Tuesday
afternoon. Seas continue 3-4 ft on Wednesday, possibly 5 ft across
the Volusia waters into Wednesday evening gradually subsiding to
2-3ft Wednesday night-Friday.

&&

.AVIATION...
(18Z TAFs)
Issued at 156 PM EDT Mon Sep 7 2026

High coverage of showers and storms today. A line of showers and
storms continues to move offshore Brevard and the Treasure Coast
early this afternoon. North of Greater Orlando, isolated activity
is beginning to redevelop and is forecast to spread south-
southeast as coverage increases. TEMPO periods of MVFR/IFR
reductions are forecast within convection this afternoon and
evening. Prevailing winds generally out of the north-northwest
often become variable today due to numerous storm boundaries.
Showers and storms may linger a few hours into the evening with
mostly dry conditions overnight. Light and variable winds tonight
turn east tomorrow.

&&

.PRELIMINARY POINT TEMPS/POPS...
DAB  75  88  77  89 /  40  40  20  60
MCO  75  91  76  91 /  40  60  30  70
MLB  76  89  77  90 /  40  30  30  50
VRB  74  89  76  90 /  40  40  30  50
LEE  75  90  75  91 /  30  70  30  70
SFB  75  89  76  91 /  30  60  20  70
ORL  76  90  76  91 /  40  60  30  70
FPR  74  89  75  89 /  40  40  30  60

&&

.MLB WATCHES/WARNINGS/ADVISORIES...
FL...None.
AM...None.
&&

DISCUSSION...Watson
AVIATION...Law

In the hours before

Special weather statement, Sep 7, 1:37 PM EDT, 4 hours 19 minutes before

Special Weather Statement
National Weather Service Melbourne FL
137 PM EDT Mon Sep 7 2026

FLZ154-159-254-259-071815-
Coastal St. Lucie FL-Inland St. Lucie FL-Inland Indian River FL-
Coastal Indian River FL-
137 PM EDT Mon Sep 7 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHERN ST. LUCIE AND
SOUTHEASTERN INDIAN RIVER COUNTIES THROUGH 215 PM EDT...

At 137 PM EDT, Doppler radar was tracking a strong thunderstorm near
Pointe West, or near Vero Beach South, moving east at 15 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...
Fort Pierce, Vero Beach, Indian River Shores, Vero Beach South, and
Gifford.

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 2732 8022 2739 8067 2773 8058 2776 8037
      2744 8023
TIME...MOT...LOC 1737Z 256DEG 13KT 2759 8046

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

Law

Local storm report, Sep 7, 2:05 PM EDT, 3 hours 51 minutes before

Preliminary Local Storm Report
National Weather Service Melbourne FL
205 PM EDT Mon Sep 7 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0153 PM     Marine Tstm Wind 1 WNW Vero Beach        27.65N 80.42W
09/07/2026  M44 MPH          Indian River       FL   ASOS

            Vero Beach Municipal Airport measured a peak
            wind gust of 44MPH/38KT from the west at
            1:53 PM.

&&

ZL

Special weather statement, Sep 7, 2:12 PM EDT, 3 hours 44 minutes before

Special Weather Statement
National Weather Service Melbourne FL
212 PM EDT Mon Sep 7 2026

FLZ058-154-159-164-259-264-071845-
Okeechobee FL-Coastal St. Lucie FL-Inland St. Lucie FL-
Inland Martin FL-Coastal Martin FL-Coastal Indian River FL-
212 PM EDT Mon Sep 7 2026

...STRONG THUNDERSTORMS WILL IMPACT ST. LUCIE...SOUTHEASTERN
OKEECHOBEE...SOUTHEASTERN INDIAN RIVER AND NORTHWESTERN MARTIN
COUNTIES THROUGH 245 PM EDT...

At 211 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Vero Beach to Fort Pierce North to near
Treasure Island. Movement was east at 10 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...
Port Saint Lucie, Walton, Fort Pierce, Stuart, and Vero Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
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 2708 8066 2711 8066 2716 8071 2721 8079
      2714 8087 2715 8087 2748 8051 2769 8034
      2729 8017 2703 8040
TIME...MOT...LOC 1811Z 268DEG 10KT 2764 8035 2747 8037 2718 8076

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

Wishard

Local storm report, Sep 7, 2:27 PM EDT, 3 hours 29 minutes before

Preliminary Local Storm Report
National Weather Service Melbourne FL
227 PM EDT Mon Sep 7 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0200 PM     Marine Tstm Wind 1 WNW Vero Beach        27.65N 80.42W
09/07/2026  M48 MPH          Indian River       FL   ASOS

            Vero Beach Municipal Airport measured a peak
            wind gust of 48MPH/42KT from the north at
            2:00 PM. Earlier, a gust to 44MPH/38KT
            occurred at 1:53 PM.

&&

ZL

Special weather statement, Sep 7, 2:41 PM EDT, 3 hours 15 minutes before

Special Weather Statement
National Weather Service Melbourne FL
241 PM EDT Mon Sep 7 2026

FLZ159-164-259-264-071915-
Coastal St. Lucie FL-Inland St. Lucie FL-Inland Martin FL-
Coastal Martin FL-
241 PM EDT Mon Sep 7 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN ST. LUCIE AND
MARTIN COUNTIES THROUGH 315 PM EDT...

At 241 PM EDT, Doppler radar was tracking a strong thunderstorm over
North River Shores, or near Jensen Beach, moving southeast 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...
Port Saint Lucie, Jupiter, Walton, Fort Pierce, and Stuart.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

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 2697 8008 2697 8014 2695 8015 2696 8044
      2720 8055 2737 8039 2743 8025 2741 8022
      2721 8013 2703 8008
TIME...MOT...LOC 1841Z 299DEG 23KT 2724 8030

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

Wishard

Local storm report, Sep 7, 3:13 PM EDT, 2 hours 43 minutes before

Preliminary Local Storm Report
National Weather Service Melbourne FL
313 PM EDT Mon Sep 7 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0254 PM     Marine Tstm Wind 2 NE Snug Harbor        27.22N 80.20W
09/07/2026  M47 MPH          AMZ555             FL   Mesonet

            The WeatherFlow station at Jensen Beach
            measured a peak wind gust of 47MPH/41KT from
            the northwest at 2:54 PM. Earlier, a gust to
            44MPH/38KT occurred at 2:49 PM.

&&

ZL

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 7, 10:56 AM EDT	Special Weather Statement	MLB	Orange	34 min
Sep 7, 11:44 AM EDT	Special Weather Statement	MLB	Osceola	31 min
Sep 7, 1:32 PM EDT	Special Marine Warning	MLB		58 min
Sep 7, 1:37 PM EDT	Special Weather Statement	MLB	Indian River, Saint Lucie	38 min
Sep 7, 2:02 PM EDT	Special Marine Warning	MLB		118 min
Sep 7, 2:12 PM EDT	Special Weather Statement	MLB	Martin, Saint Lucie	33 min
Sep 7, 2:41 PM EDT	Special Weather Statement	MLB	Martin	34 min
Sep 7, 2:43 PM EDT	Severe Thunderstorm Warning	MLB	Martin, Saint Lucie	32 min
Sep 7, 2:56 PM EDT	Special Marine Warning	MLB		64 min
Sep 7, 3:09 PM EDT	Severe Thunderstorm Warning	MLB	Martin	24 min
Sep 7, 3:55 PM EDT	Areal Flood Advisory	MLB	Brevard	95 min
Sep 7, 5:36 PM EDT	Areal Flood Advisory	MLB	Lake, Orange, Seminole	114 min

Nearby

Flash Flood Warnings in Florida, 2026 Every flash flood warning 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.