Alert archive / Florida / Tornado Warnings in 2004

Tornado Warning 15, NWS Melbourne, FL

August 13, 2004Osceola County, Florida

NWS Melbourne, FL issued this tornado warning at Aug 13, 2004, 2:38 PM EDT for Osceola County, Florida. It was in force for 37 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, 2:38 PM EDT (18:38 UTC)
Expired
Aug 13, 2004, 3:15 PM EDT
In force
37 min
Issued by
NWS Melbourne, FL
Area
Counties, with a storm outline in the text

County Osceola County, FL

The radar

The Melbourne radar (KMLB), 34 km from the middle of the area, began a volume at 18:39 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 watch it was issued in

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

IssuedProductOfficeLasted
Aug 13, 7:30 AM EDTTornado WatchSPC10 hr
Aug 13, 1:45 PM EDTTornado WatchSPC12 hr

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 6.6 hours before the alert went out and 144 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, Tampa Bay, FL at 12:00Z on 2004-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Tampa Bay, FL at 12:00Z on 2004-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -160 square meters per square second.1939Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1607 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-160 m²/s²
0-3 km storm-relative helicity
-117 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KMLB 131838
TORMLB
FLC097-131915-

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

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN OSCEOLA COUNTY
  IN EAST CENTRAL FLORIDA

* UNTIL 315 PM EDT

* AT 237 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
SQUALLS CAPABLE OF PRODUCING TORNADOES 10 MILES SOUTHEAST OF HOLOPAW 
AND 10 MILES EAST OF NARCOOSSEE MOVING NORTH AT 40 MPH.

* THE STORM IS EXPECTED TO BE...
  THE SQUALLS WILL MOVE NORTH OVER EASTERN OSCEOLA COUNTY THROUGH    
  315 PM

THE IMMEDIATE DANGER OF A TORNADO IS HIGH. PEOPLE IN THE PATH OF THIS
DEVELOPING TORNADO ARE URGED TO QUICKLY PREPARE FOR ITS APPROACH.
THIS IS A DANGEROUS SITUATION ACT NOW AS SECONDS CAN SAVE LIVES

IF YOU ARE CAUGHT OUTSIDE...GET INTO AN UNFLOODED DITCH OR LOW SPOT 
AND COVER YOUR HEAD WITH YOUR HANDS AND ARMS. ABANDON YOUR VEHICLE 
IF THE TORNADO IS NEARBY.

IF YOU EXPERIENCE SEVERE WEATHER...PLEASE RELAY YOUR REPORT TO LOCAL
LAW ENFORCEMENT AND ASK THEM TO PASS IT ALONG TO THE NATIONAL WEATHER
SERVICE. 

LAT...LON 2786 8105 2787 8085 2828 8084 2827 8112

$$

JP

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, 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
Aug 13, 7:09 PM EDTTornado WarningMLBVolusia36 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.