Alert archive / Florida / Tornado Warnings in 2008

Tornado Warning 13, NWS Melbourne, FL

August 19, 2008Saint Lucie County, Florida

NWS Melbourne, FL issued this tornado warning at Aug 19, 2008, 5:50 AM EDT for Saint Lucie County, Florida. It was in force for 40 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 19, 2008, 5:50 AM EDT (09:50 UTC)
Expired
Aug 19, 2008, 6:30 AM EDT
In force
40 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon

County Saint Lucie County, FL

The radar

The Melbourne radar (KMLB), 96 km from the middle of the area, began a volume at 09:53 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 18, 10:44 PM EDTTornado WatchSPC9 hr

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 00:00Z, 9.8 hours before the alert went out and 130 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 00:00Z on 2008-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 590 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, Cape Canaveral, FL at 00:00Z on 2008-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -61 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
590 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
859 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-61 m²/s²
0-3 km storm-relative helicity
-71 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 190950
TORMLB
FLC111-191030-
/O.NEW.KMLB.TO.W.0013.080819T0950Z-080819T1030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
550 AM EDT TUE AUG 19 2008

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...FORT PIERCE INLET...WHITE
  CITY...SAINT LUCIE NUCLEAR PLANT...PORT SAINT LUCIE...INDRIO...FORT
  PIERCE...

* UNTIL 630 AM EDT

* AT 544 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SQUALL LINE CAPABLE OF PRODUCING A TORNADO 7 MILES SOUTH OF 
WALTON...OR ABOUT NEAR STUART...MOVING NORTHWEST AT 35 MPH.

* THE TORNADO WILL BE NEAR...
  WALTON BY 555 AM EDT...
  PORT SAINT LUCIE AND PORT SAINT LUCIE RIVER PARK BY 600 AM EDT...
  SAINT LUCIE WEST...AND WHITE CITY BY 605 AM EDT...

TORNADOES ASSOCIATED WITH TROPICAL CYCLONES ARE OFTEN WRAPPED IN
HEAVY RAIN AND ARE HARD TO SEE OR HEAR UNTIL THEY ARE VERY CLOSE. DO
NOT GET CAUGHT OFFGUARD

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

TORNADOES AT NIGHT ARE DIFFICULT TO SEE. WATCH FOR THE POPPING OF
ELECTRIC LINES AND TRANSFORMERS OR LISTEN FOR THE SOUND OF LOUD
RUMBLING AS THAT OF AN APPROACHING FREIGHT TRAIN.

LAT...LON 2726 8022 2732 8023 2734 8026 2727 8023
      2727 8029 2724 8029 2724 8030 2721 8029
      2720 8034 2731 8062 2755 8033 2750 8029
      2744 8027 2740 8025 2726 8020
TIME...MOT...LOC 0949Z 130DEG 30KT 2722 8027

$$



BRAGAW
1 follow-up statement
000 
WWUS52 KMLB 191012
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
612 AM EDT TUE AUG 19 2008

FLC111-191030-
/O.CON.KMLB.TO.W.0013.000000T0000Z-080819T1030Z/
ST. LUCIE FL-
610 AM EDT TUE AUG 19 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 AM EDT FOR
SOUTHEASTERN ST. LUCIE COUNTY...

AT 607 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A SQUALL LINE CAPABLE OF PRODUCING A TORNADO.  THIS STORM 
WAS LOCATED NEAR SAINT LUCIE WEST AND PORT SAINT LUCIE RIVER 
PARK...MOVING NORTHWEST NEAR 35 MPH.

THE TORNADO WILL BE NEAR...
  NORTH PORT ST. LUCIE BY 620 AM EDT

THE PORT ST. LUCIE NUCLEAR PLANT REPORTED A WIND GUST NEAR 55 MPH AT 
555 AM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 AM EDT TUESDAY MORNING
FOR EAST CENTRAL FLORIDA.


LAT...LON 2726 8022 2732 8023 2734 8026 2727 8023
      2727 8029 2724 8029 2724 8030 2721 8029
      2720 8034 2731 8062 2755 8033 2750 8029
      2744 8027 2740 8025 2726 8020
TIME...MOT...LOC 1010Z 130DEG 30KT 2733 8042

$$



BRAGAW

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 1:32 AM EDTTornado WarningMLBMartin43 min
Aug 19, 2:15 AM EDTTornado WarningMLBMartin33 min
Aug 19, 3:06 AM EDTTornado WarningMLBOkeechobee39 min
Aug 19, 6:28 AM EDTTornado WarningMLBSaint Lucie20 min
Aug 19, 6:28 AM EDTTornado WarningMLBMartin47 min
Aug 19, 6:45 AM EDTTornado WarningMLBMartin, Saint Lucie30 min
Aug 19, 8:43 AM EDTFlash Flood WarningMLBMartin2 hr
Aug 19, 9:03 AM EDTTornado WarningMLBMartin14 min
Aug 19, 9:52 AM EDTTornado WarningMLBMartin23 min
Aug 19, 10:51 AM EDTFlash Flood WarningMLBMartin, Saint Lucie114 min
Aug 19, 12:26 PM EDTFlash Flood WarningMLBIndian River, Martin, Okeechobee, Saint Lucie4 hr
Aug 19, 12:46 PM EDTTornado WarningMLBIndian River, Saint Lucie29 min
Aug 19, 1:28 PM EDTTornado WarningMLBBrevard, Osceola32 min
Aug 19, 1:53 PM EDTTornado WarningMLBIndian River22 min
Aug 19, 2:17 PM EDTTornado WarningMLBIndian River28 min
Aug 19, 2:30 PM EDTFlash Flood WarningMLBBrevard4 hr
Aug 19, 3:23 PM EDTTornado WarningMLBOsceola34 min
Aug 19, 4:21 PM EDTAreal Flood WarningMLBIndian River, Martin, Okeechobee, Osceola, Saint Lucie4 hr
Aug 19, 4:29 PM EDTTornado WarningMLBBrevard31 min
Aug 19, 6:13 PM EDTFlash Flood WarningMLBBrevard3 hr

Nearby

Tornado Warnings in Florida, 2008Every tornado warning in 2008Tornadoes in 2008

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.