Alert archive / Florida / Tornado Warnings in 2004

Tornado Warning 19, NWS Melbourne, FL

August 13, 2004Volusia County, Florida

NWS Melbourne, FL issued this tornado warning at Aug 13, 2004, 7:09 PM EDT for Volusia County, Florida. It was in force for 36 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
Aug 13, 2004, 7:09 PM EDT (23:09 UTC)
Expired
Aug 13, 2004, 7:45 PM EDT
In force
36 min
Issued by
NWS Melbourne, FL
Area
Counties, with a storm outline in the text

County Volusia County, FL

The radar

The Melbourne radar (KMLB), 140 km from the middle of the area, began a volume at 23:10 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 13, 1:45 PM EDTTornado WatchSPC12 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 11.2 hours before the alert went out and 147 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, Jacksonville, FL at 12:00Z on 2004-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1037 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, Jacksonville, FL at 12:00Z on 2004-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 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
1037 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
811 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
107 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.1

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KMLB 132309
TORMLB
FLC127-132345-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
709 PM EDT FRI AUG 13 2004

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN VOLUSIA COUNTY
  IN EAST CENTRAL FLORIDA

* UNTIL 745 PM EDT

* AT 709 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
A   DEVELOPING TORNADO OVER DE LAND MOVING NORTH AT 35 MPH.

* THE TORNADO IS EXPECTED TO BE...
  NEAR DE LEON SPRINGS...PONCE DE LEON SPRINGS AT 720 PM EDT.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A STRONG BUILDING ON 
THE LOWEST FLOOR IN AN INTERIOR ROOM AWAY FROM WINDOWS. GET UNDER A 
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. USE BLANKETS OR PILLOWS
TO COVER YOUR HEAD AND BODY.

EVACUATE MOBILE HOMES OR VEHICLES FOR MORE SUBSTANTIAL SHELTER. IF NO
SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST UNFLOODED DITCH...
CULVERT...OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
NEVER TRY TO OUTRUN A NEARBY TORNADO IN YOUR CAR.

LAT...LON 2892 8140 2893 8119 2967 8117 2966 8148

$$

SPRATT

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 11:59 AM EDTTornado WarningMLBOkeechobee61 min
Aug 13, 1:01 PM EDTSevere Thunderstorm WarningMLBOkeechobee, Osceola59 min
Aug 13, 1:23 PM EDTTornado WarningMLBOkeechobee, Osceola62 min
Aug 13, 1:35 PM EDTTornado WarningMLBLake55 min
Aug 13, 2:06 PM EDTTornado WarningMLBOrange44 min
Aug 13, 2:31 PM EDTTornado WarningMLBLake59 min
Aug 13, 2:38 PM EDTTornado WarningMLBOsceola37 min
Aug 13, 3:54 PM EDTTornado WarningMLBBrevard, Volusia66 min
Aug 13, 4:51 PM EDTSpecial Marine WarningMLB54 min
Aug 13, 5:00 PM EDTTornado WarningMLBOrange, Osceola60 min
Aug 13, 6:50 PM EDTTornado WarningMLBLake, Orange, Osceola55 min

Nearby

Tornado Warnings in Florida, 2004Every tornado warning in 2004Tornadoes 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.