Alert archive / Florida / Tornado Warnings in 2004

Tornado Warning 9, NWS Melbourne, FL

August 12, 2004Saint Lucie County, Florida

NWS Melbourne, FL issued this tornado warning at Aug 12, 2004, 2:49 PM EDT for Saint Lucie County, Florida. It was in force for 26 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 12, 2004, 2:49 PM EDT (18:49 UTC)
Expired
Aug 12, 2004, 3:15 PM EDT
In force
26 min
Issued by
NWS Melbourne, FL
Area
Counties, with a storm outline in the text

County Saint Lucie County, FL

The radar

The Melbourne radar (KMLB), 73 km from the middle of the area, began a volume at 18:52 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 6.8 hours before the alert went out and 106 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, Cape Canaveral, FL at 12:00Z on 2004-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1605 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cape Canaveral, FL at 12:00Z on 2004-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 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
1605 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
743 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
24 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 121849
TORMLB
FLC111-121915-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
248 PM EDT THU AUG 12 2004

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN ST. LUCIE COUNTY
  IN EAST CENTRAL FLORIDA

* UNTIL 315 PM EDT

* AT 247 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER FORT            
  PIERCE...MOVING NORTH AT 30 MPH.

* THE TORNADO IS EXPECTED TO BE...
  NEAR PEPPER BEACH STATE PARK...PEPPER BEACH PARK...QUEENS COVE...
     FORT PIERCE INLET AT 255 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.

LAT...LON 2738 8046 2732 8027 2775 8007 2783 8031

$$

15

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 12, 1:12 PM EDTSpecial Marine WarningMLB2 hr
Aug 12, 1:12 PM EDTSpecial Marine WarningMLB2 hr
Aug 12, 1:55 PM EDTSpecial Marine WarningMLB2 hr
Aug 12, 1:55 PM EDTSpecial Marine WarningMLB2 hr
Aug 12, 2:26 PM EDTSevere Thunderstorm WarningMLBBrevard49 min
Aug 12, 3:08 PM EDTSevere Thunderstorm WarningMLBMartin, Saint Lucie52 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.