Alert archive / Florida / Tornado Warnings in 2005

Tornado Warning 13, NWS Melbourne, FL

April 7, 2005Saint Lucie County, Florida

NWS Melbourne, FL issued this tornado warning at Apr 7, 2005, 10:32 PM EDT for Saint Lucie County, Florida. It was in force for 28 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: Apr 7, 2005, 10:32 PM EDT (02:32 UTC)
Expired: Apr 7, 2005, 11:00 PM EDT
In force: 28 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), 103 km from the middle of the area, began a volume at 02:35 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
Apr 7, 5:50 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 7, 10:20 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Miami, FL (KMFL), launched 00:00Z, 2.5 hours before the alert went out and 167 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: 1332 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 733 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 122 m²/s²
0-3 km storm-relative helicity: 190 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 4.7

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KMLB 080232
TORMLB
FLC111-080300-
/O.NEW.KMLB.TO.W.0013.050408T0232Z-050408T0300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
1032 PM EDT THU APR 7 2005

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN ST. LUCIE COUNTY IN EAST CENTRAL FLORIDA
  THIS INCLUDES THE CITIES OF...WALTON...SAINT LUCIE NUCLEAR PLANT...
  PORT SAINT LUCIE

* UNTIL 1100 PM EDT

* AT 1030 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH SIGNIFICANT ROTATION NEAR NORTH RIVER
  SHORES...OR ABOUT NEAR PORT SAINT LUCIE...MOVING EAST AT 30 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  WALTON BY 1040 PM EDT
  NETTLES ISLAND AND 6 MILES SOUTH OF SAINT LUCIE NUCLEAR PLANT BY
  1045 PM EDT
  HUTCHINSON ISLAND SOUTH BY 1050 PM EDT

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

EVACUATE MOBILE HOMES OR VEHICLES FOR MORE SUBSTANTIAL SHELTER. IF NO
SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS. ABANDON YOUR VEHICLE IF THE
TORNADO IS NEARBY.

LAT...LON 2729 8045 2712 8038 2730 7962 2756 7971

$$

MRV

2 follow-up statements

000 
WWUS52 KMLB 080242
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
1040 PM EDT THU APR 7 2005

FLC111-080300-
/O.CON.KMLB.TO.W.0013.000000T0000Z-050408T0300Z/
ST. LUCIE FL-
1040 PM EDT THU APR 7 2005

...A TORNADO WARNING CONTINUES UNTIL 1100 PM EDT FOR SOUTHEASTERN ST.
LUCIE COUNTY...

AT 1038 PM EDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE 
A SEVERE THUNDERSTORM WITH STRONG ROTATION. THE THUNDERSTORM CAPABLE 
OF PRODUCING A TORNADO WAS NEAR PORT SAINT LUCIE MOVING EAST 
NORTHEAST TOWARD SOUTH HUTCHINSON ISLAND. 

THE TORNADO WILL BE NEAR...
  HUTCHINSON ISLAND SOUTH BY 1050 PM EDT

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

LAT...LON 2729 8045 2712 8038 2730 7962 2756 7971

$$

15

000 
WWUS52 KMLB 080254
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
1053 PM EDT THU APR 7 2005

FLC111-080303-
/O.CAN.KMLB.TO.W.0013.000000T0000Z-050408T0300Z/
ST. LUCIE FL-
1055 PM EDT THU APR 7 2005

...THE TORNADO WARNING FOR SOUTHEASTERN ST. LUCIE COUNTY IS
CANCELLED...

AT 1055 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE 
THUNDERSTORM THAT PROMPTED THE TORNADO WARNING HAD WEAKENED AND NO 
LONGER APPEARED CAPABLE OF PRODUCING TORNADOES OR OTHER SEVERE 
WEATHER. AS A RESULT...THE WARNING HAS BEEN CANCELLED.

STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR THE
LATEST SEVERE WEATHER INFORMATION.

LAT...LON 2729 8045 2712 8038 2730 7962 2756 7971

$$

15

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 7, 8:10 PM EDT	Special Marine Warning	MLB		95 min
Apr 7, 8:53 PM EDT	Severe Thunderstorm Warning	MLB	Indian River	37 min
Apr 7, 8:57 PM EDT	Severe Thunderstorm Warning	MLB	Brevard	33 min
Apr 7, 10:43 PM EDT	Special Marine Warning	MLB		2 hr

Nearby

Tornado Warnings in Florida, 2005 Every tornado warning in 2005 Tornadoes in 2005

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.