Alert archive / Florida / Flash Flood Warnings in 2004

Flash Flood Warning 3, NWS Melbourne, FL

September 26, 20046 counties in Florida

NWS Melbourne, FL issued this flash flood warning at Sep 26, 2004, 12:35 AM EDT for 6 counties in Florida. It was in force for 5 hr. 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 26, 2004, 12:35 AM EDT (04:35 UTC)
Expired: Sep 26, 2004, 6:00 AM EDT
In force: 5 hr
Issued by: NWS Melbourne, FL
Area: Counties, with a storm outline in the text

Counties Brevard County, FL, Indian River County, FL, Martin County, FL, Okeechobee County, FL, Osceola County, FL, Saint Lucie County, FL

The radar

The Melbourne radar (KMLB), 40 km from the middle of the area, began a volume at 04:39 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 00:00Z, 4.6 hours before the alert went out and 160 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: 77 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 681 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 148 m²/s²
0-3 km storm-relative helicity: 240 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS52 KMLB 260435
FFWMLB
FLC009-061-085-093-097-111-261000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
1235 AM EDT SUN SEP 26 2004

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BREVARD COUNTY
  INDIAN RIVER COUNTY
  MARTIN COUNTY
  OKEECHOBEE COUNTY
  OSCEOLA COUNTY
  ST. LUCIE COUNTY
  IN EAST CENTRAL FLORIDA

* UNTIL 600 AM EDT

* AT 1230 AM EDT...WEATHER SERVICE DOPPLER RADAR INDICATED 
  PERSISTENT VERY HEAVY RAIN BANDS FROM DANGEROUS HURRICANE JEANNE   
  SPREADING OVER EAST CENTRAL FLORIDA. RADAR RAINFALL ESTIMATES 
  INDICATE THAT THREE TO FIVE INCHES OF RAINFALL OCCURRED THROUGH
  MIDNIGHT IN MARTIN...ST LUCIE AND INDIAN RIVER COUNTIES...AND AN 
  ADDITIONAL TWO TO THREE INCHES WILL BE POSSIBLE. IN BREVARD... 
  OKEECHOBEE AND AND OSCEOLA COUNTIES...THE RAINS WILL BECOME MORE 
  PERSISTENT IN THE EARLY MORNING HOURS...WITH ACCUMULATIONS OF 4 TO 
  6 INCHES OF RAINFALL POSSIBLE THROUGH 6 AM. 

* AREAS THAT HAVE RECEIVED HEAVY RAINFALL IN RECENT DAYS WILL BE 
  ESPECIALLY VULNERABLE TO FLOODING...INCLUDING LOW LYING AND POOR 
  DRAINAGE AREAS...ALSO AREAS ALONG RIVERS...LAKES AND CANALS WHERE 
  WATER LEVELS HAVE RISEN IN RECENT DAYS.  

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODING. IF FLOODING IS OBSERVED ACT QUICKLY. MOVE TO 
HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO
FLOODING WHEN WATER BEGINS RISING.

TURN AROUND...DONT DROWN IF YOU CANNOT SEE THE ROAD OR ITS LINE 
MARKINGS DO NOT DRIVE YOUR VEHICLE THROUGH THE WATER.  THE WATER 
DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. ONLY TWO 
FEET OF WATER CAN MAKE MOST VEHICLES BUOYANT AND PRONE TO BEING 
SWEPT AWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED 
QUICKLY.

A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU 
ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.  

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
MELBOURNE.


LAT...LON 2778 8042 2868 8064 2834 8090 2814 8143
      2746 8134 2698 8092 2701 8013

$$

GLITTO/TURNER

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 25, 8:53 PM EDT	Flash Flood Warning	MLB	Indian River, Martin, Saint Lucie	4 hr
Sep 25, 9:06 PM EDT	Tornado Warning	MLB	Martin, Saint Lucie	54 min
Sep 25, 9:47 PM EDT	Tornado Warning	MLB	Indian River	58 min
Sep 25, 11:58 PM EDT	Tornado Warning	MLB	Brevard	62 min
Sep 26, 2:32 AM EDT	Tornado Warning	MLB	Indian River	58 min
Sep 26, 12:01 PM EDT	Flash Flood Warning	MLB	Brevard, Lake, Orange, Osceola, Seminole, Volusia	6 hr

Nearby

Flash Flood Warnings in Florida, 2004 Every flash flood warning in 2004

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.