Alert archive / Florida / Tornado Warnings in 2008

Tornado Warning 19, NWS Melbourne, FL

August 19, 2008Indian River County, Saint Lucie County, Florida

NWS Melbourne, FL issued this tornado warning at Aug 19, 2008, 12:46 PM EDT for Indian River County, Saint Lucie County, Florida. It was in force for 29 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, 12:46 PM EDT (16:46 UTC)
Expired
Aug 19, 2008, 1:15 PM EDT
In force
29 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon

Counties Indian River County, FL, Saint Lucie County, FL

The radar

The Melbourne radar (KMLB), 67 km from the middle of the area, began a volume at 16:47 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 19, 7:05 AM EDTTornado WatchSPC9 hr

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 4.8 hours before the alert went out and 103 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 2008-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 272 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 12:00Z on 2008-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -17 square meters per square second.193958Sfc1 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
272 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
943 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-17 m²/s²
0-3 km storm-relative helicity
50 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.6

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KMLB 191646
TORMLB
FLC061-111-191715-
/O.NEW.KMLB.TO.W.0019.080819T1646Z-080819T1715Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
1246 PM EDT TUE AUG 19 2008

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN INDIAN RIVER COUNTY IN EAST CENTRAL FLORIDA...
  THIS INCLUDES THE CITY OF VERO BEACH SOUTH...
  NORTH CENTRAL ST. LUCIE COUNTY IN EAST CENTRAL FLORIDA...
  THIS INCLUDES THE CITY OF INDRIO...

* UNTIL 115 PM EDT

* AT 1245 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR LAKEWOOD
  PARK...OR ABOUT NEAR INDRIO...MOVING NORTHWEST AT 30 MPH.

* THE TORNADO WILL BE NEAR...
  VERO BEACH SOUTH BY 1255 PM EDT...

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...SECONDS CAN SAVE LIVES

THE TORNADO WILL LIKELY BE WRAPPED IN HEAVY RAIN MAKING IT DIFFICULT
TO SEE. BE SMART AND REACT NOW

LAT...LON 2750 8031 2740 8048 2764 8068 2775 8051
      2753 8034 2752 8034 2752 8033
TIME...MOT...LOC 1645Z 147DEG 26KT 2753 8045

$$

JP
1 follow-up statement
000 
WWUS52 KMLB 191716
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
116 PM EDT TUE AUG 19 2008

FLC061-111-191725-
/O.EXP.KMLB.TO.W.0019.000000T0000Z-080819T1715Z/
ST. LUCIE FL-INDIAN RIVER FL-
115 PM EDT TUE AUG 19 2008

...THE TORNADO WARNING FOR SOUTHEASTERN INDIAN RIVER AND NORTH
CENTRAL ST. LUCIE COUNTIES HAS EXPIRED...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE TORNADIC CELL 
THAT PROMPTED THE WARNING HAD WEAKENED AND NO LONGER APPEARED 
CAPABLE OF PRODUCING TORNADOES...THUS THE WARNING HAS BEEN ALLOWED 
TO EXPIRE. HOWEVER...OTHER CELLS OFFSHORE THE TREASURE COAST 
CONTINUE TO SHOW ROTATION...AND SQUALLS CAN BE EXPECTED TO PRODUCE 
VERY STRONG GUSTY WINDS...EVEN IF THEY DONT BECOME TORNADIC.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM TUESDAY AFTERNOON FOR 
EAST CENTRAL FLORIDA.

LAT...LON 2750 8031 2740 8048 2764 8068 2775 8051
      2753 8034 2752 8034 2752 8033
TIME...MOT...LOC 1715Z 147DEG 26KT 2771 8058

$$


CRISTALDI

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, 5:50 AM EDTTornado WarningMLBSaint Lucie40 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, 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.