Alert archive / Florida / Flash Flood Warnings in 2004

Flash Flood Warning 2, NWS Melbourne, FL

September 25, 2004Indian River County, Martin County, Saint Lucie County, Florida

NWS Melbourne, FL issued this flash flood warning at Sep 25, 2004, 8:53 PM EDT for Indian River County, Martin County, Saint Lucie County, Florida. It was in force for 4 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 25, 2004, 8:53 PM EDT (00:53 UTC)
Expired
Sep 26, 2004, 1:00 AM EDT
In force
4 hr
Issued by
NWS Melbourne, FL
Area
Counties, with a storm outline in the text

Counties Indian River County, FL, Martin County, FL, Saint Lucie County, FL

The radar

The Melbourne radar (KMLB), 100 km from the middle of the area, began a volume at 00:52 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

Miami, FL (KMFL), launched 00:00Z, 0.9 hours before the alert went out and 159 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-pSkew-T log-p diagram, Miami, FL at 00:00Z on 2004-09-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 263 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 00:00Z on 2004-09-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 238 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
263 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
662 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
238 m²/s²
0-3 km storm-relative helicity
233 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

000 
WGUS52 KMLB 260054
FFWMLB
FLC061-085-111-260500-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
853 PM EDT SAT SEP 25 2004

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

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

* UNTIL 100 AM EDT

* AT 850 PM EDT...WEATHER SERVICE DOPPLER RADAR INDICATED PERSISTENT 
VERY HEAVY RAIN BANDS FROM DANGEROUS HURRICANE JEANNE OVER INDIAN 
RIVER...ST LUCIE AND MARTIN COUNTIES. RADAR RAINFALL ESTIMATES 
INDICATE THAT TWO TO THREE INCHES OF RAINFALL HAS OCCURRED...AND AN 
ADDITIONAL TWO TO THREE INCHES WILL BE POSSIBLE.  

* 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 HAS 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 2696 8008 2780 8044 2756 8073 2695 8061

$$

GLITTO

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 25, 9:06 PM EDTTornado WarningMLBMartin, Saint Lucie54 min
Sep 25, 9:47 PM EDTTornado WarningMLBIndian River58 min
Sep 25, 11:58 PM EDTTornado WarningMLBBrevard62 min
Sep 26, 12:35 AM EDTFlash Flood WarningMLBBrevard, Indian River, Martin, Okeechobee, Osceola, Saint Lucie5 hr
Sep 26, 2:32 AM EDTTornado WarningMLBIndian River58 min
Sep 26, 12:01 PM EDTFlash Flood WarningMLBBrevard, Lake, Orange, Osceola, Seminole, Volusia6 hr

Nearby

Flash Flood Warnings in Florida, 2004Every 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.