Alert archive / Florida / Tornado Warnings in 2004

Tornado Warning 10, NWS Melbourne, FL

August 13, 2004Okeechobee County, Florida

NWS Melbourne, FL issued this tornado warning at Aug 13, 2004, 11:59 AM EDT for Okeechobee County, Florida. It was in force for 61 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, 11:59 AM EDT (15:59 UTC)
Expired: Aug 13, 2004, 1:00 PM EDT
In force: 61 min
Issued by: NWS Melbourne, FL
Area: Counties, with a storm outline in the text

County Okeechobee County, FL

The radar

The Melbourne radar (KMLB), 137 km from the middle of the area, began a volume at 16:01 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.

Issued	Product	Office	Lasted
Aug 13, 7:30 AM EDT	Tornado Watch	SPC	10 hr

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 4.0 hours before the alert went out and 135 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: 1914 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 839 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 175 m²/s²
0-3 km storm-relative helicity: 202 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 6.0

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KMLB 131559
TORMLB
FLC093-131700-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
1158 AM EDT FRI AUG 13 2004

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
  OKEECHOBEE COUNTY
  IN EAST CENTRAL FLORIDA

* UNTIL 100 PM EDT

* AT 1144 AM EDT...LAW ENFORCEMENT REPORTED A TORNADO JUST SOUTH OF 
LAKE OKEECHOBEE MOVING NORTH AT 35 MPH.

THE SQUALL LINE ASSOCIATED WITH THIS TORNADO WILL BE CAPABLE OF 
PRODUCING ADDITIONAL TORNADOES AS IT MOVES NORTH AT 35 MPH INTO 
OKEECHOBEE COUNTY. ALSO STRAIGHT LINE WIND GUSTS OF 40 TO 50 MPH 
WILL BE POSSIBLE WITH THIS SQUALL AS IT MOVES INTO OKEECHOBEE AROUND 
1230 PM.   

REPEATING...A TORNADO HAS BEEN REPORTED TAKE PROTECTIVE MEASURES 
NOW

IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS IN A STRONG
BUILDING ON THE LOWEST FLOOR. MOVE TO AN INTERIOR ROOM SUCH AS A
BATHROOM OR CLOSET. KEEP AWAY FROM WINDOWS. IF NECESSARY...GET UNDER
A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. USE BLANKETS OR
PILLOWS TO COVER YOUR BODY.

ABANDON YOUR MOBILE HOME OR RV FOR MORE SUBSTANTIAL SHELTER. 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 ARE IN AN RV PARK...LEAVE YOUR RV FOR STURDY SHELTER. MANY
PARKS HAVE CENTRALIZED BUILDINGS SUCH AS REC CENTERS...POOL HOUSES...
COMMUNITY SHOWERS AND BATHS...OR A MAIN OFFICE WHICH CAN OFFER BETTER
PROTECTION. WHILE MOVING TO SAFER SHELTER...QUICKLY INFORM YOUR
NEIGHBOR BY KNOCKING ON THEIR DOOR.

LAT...LON 2673 8103 2669 8083 2716 8069 2721 8096

$$

JP

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 13, 1:01 PM EDT	Severe Thunderstorm Warning	MLB	Okeechobee, Osceola	59 min
Aug 13, 1:23 PM EDT	Tornado Warning	MLB	Okeechobee, Osceola	62 min
Aug 13, 1:35 PM EDT	Tornado Warning	MLB	Lake	55 min
Aug 13, 2:06 PM EDT	Tornado Warning	MLB	Orange	44 min
Aug 13, 2:31 PM EDT	Tornado Warning	MLB	Lake	59 min
Aug 13, 2:38 PM EDT	Tornado Warning	MLB	Osceola	37 min
Aug 13, 3:54 PM EDT	Tornado Warning	MLB	Brevard, Volusia	66 min
Aug 13, 4:51 PM EDT	Special Marine Warning	MLB		54 min
Aug 13, 5:00 PM EDT	Tornado Warning	MLB	Orange, Osceola	60 min
Aug 13, 6:50 PM EDT	Tornado Warning	MLB	Lake, Orange, Osceola	55 min
Aug 13, 7:09 PM EDT	Tornado Warning	MLB	Volusia	36 min

Nearby

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