Alert archive / Florida / Tornado Warnings in 2012

Tornado Warning 24, NWS Melbourne, FL

December 10, 2012Lake County, Orange County, Seminole County, Florida

NWS Melbourne, FL issued this tornado warning at Dec 10, 2012, 4:13 PM EST for Lake County, Orange County, Seminole County, Florida. It was in force for 47 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Dec 10, 2012, 4:13 PM EST (21:13 UTC)
Expired
Dec 10, 2012, 5:00 PM EST
In force
47 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon

Counties Lake County, FL, Orange County, FL, Seminole County, FL

What was reported inside it

TimeReportWhereRemark
Dec 10, 4:30 PM ESTFUNNEL CLOUDApopka, FLLOCATION OF FUNNEL ESTIMATED BY RADAR.
Dec 10, 4:30 PM ESTTSTM WND DMGPlymouth, FLTOP OF TREE DOWN. TIME ESTIMATED BY RADAR.
Dec 10, 4:30 PM ESTTORNADO4 Wsw Apopka, FLPUBLIC REPORTED TORNADO NORTH OF LAKE APOPKA AND PICTURES VIA PUBLIC AND MEDIA APPEAR TO CONFIRM WATERSPOUT OVER LAKE APOPKA.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 9.2 hours before the alert went out and 107 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 2012-12-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 9 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 2012-12-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 96 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
9 J/kg
Mixed-layer CIN
-174 J/kg
Mixed-layer LCL
872 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
96 m²/s²
0-3 km storm-relative helicity
139 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

943 
WFUS52 KMLB 102113
TORMLB
FLC069-095-117-102200-
/O.NEW.KMLB.TO.W.0024.121210T2113Z-121210T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
413 PM EST MON DEC 10 2012

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL LAKE COUNTY IN FLORIDA...
  THIS INCLUDES THE CITIES OF...MOUNT PLYMOUTH...FERNDALE...
  NORTHWESTERN ORANGE COUNTY IN FLORIDA...
  THIS INCLUDES THE CITIES OF...ZELLWOOD...LAKE APOPKA...APOPKA...
  NORTHWESTERN SEMINOLE COUNTY IN FLORIDA...
  THIS INCLUDES THE CITIES OF...WEKIVA SPRINGS...LAKE MARY...

* UNTIL 500 PM EST.

* AT 410 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR LAKE
  APOPKA...MOVING NORTHEAST AT 30 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO   
WEKIWA SPRINGS STATE PARK AND ROCK SPRINGS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
DESTRUCTIVE STRAIGHT LINE WINDS.

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.

&&

LAT...LON 2892 8154 2876 8132 2856 8160 2863 8172
TIME...MOT...LOC 2112Z 228DEG 24KT 2865 8164

$$



BRAGAW
2 follow-up statements
228 
WWUS52 KMLB 102130
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
430 PM EST MON DEC 10 2012

FLC069-095-117-102200-
/O.CON.KMLB.TO.W.0024.000000T0000Z-121210T2200Z/
SEMINOLE-ORANGE-LAKE-
430 PM EST MON DEC 10 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM EST FOR EAST
CENTRAL LAKE...NORTHWESTERN ORANGE AND NORTHWESTERN SEMINOLE
COUNTIES...

AT 424 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A STORM CAPABLE OF PRODUCING A TORNADO.  THIS TORNADO WAS 
LOCATED OVER APOPKA...NEAR ZELLWOOD...MOVING NORTHEAST AT 30 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WEKIWA
SPRINGS STATE PARK...ROCK SPRINGS...MOUNT PLYMOUTH...WEKIVA SPRINGS 
AND LAKE MARY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 2892 8154 2876 8132 2856 8160 2863 8172
TIME...MOT...LOC 2129Z 228DEG 24KT 2873 8154

$$



BRAGAW
018 
WWUS52 KMLB 102159
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
459 PM EST MON DEC 10 2012

FLC069-095-117-102206-
/O.EXP.KMLB.TO.W.0024.000000T0000Z-121210T2200Z/
SEMINOLE-ORANGE-LAKE-
459 PM EST MON DEC 10 2012

...THE TORNADO WARNING FOR EAST CENTRAL LAKE...NORTHWESTERN ORANGE
AND NORTHWESTERN SEMINOLE COUNTIES WILL EXPIRE AT 500 PM EST...

ROTATION WITHIN THE SEVERE STORM THAT PROMPTED THE WARNING HAD 
WEAKENED AND WAS EXITING THE WARNING AREA...THUS THE WARNING HAS 
BEEN ALLOWED TO EXPIRE.

THIS STORM WILL BE CLOSELY MONITORED AS IT MOVES THROUGH NORTHERN 
SEMINOLE AND SOUTHWESTERN VOLUSIA COUNTY AS IT HAS A HISTORY OF 
PRODUCING A FUNNEL CLOUD AND TORNADO TOUCHDOWN AROUND THE APOPKA 
AREA.

A TORNADO WARNING MAY NEED TO BE ISSUED WITH SHORT NOTICE IF 
ROTATION RESTRENGTHENS IN THIS STORM.

LAT...LON 2892 8154 2876 8132 2856 8160 2863 8172
TIME...MOT...LOC 2156Z 228DEG 24KT 2880 8139

$$



CRISTALDI

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 10, 2:53 PM ESTSpecial Weather StatementMLBOkeechobee52 min
Dec 10, 3:39 PM ESTSpecial Weather StatementMLBIndian River, Okeechobee51 min
Dec 10, 3:50 PM ESTSpecial Weather StatementMLBOrange, Seminole55 min
Dec 10, 4:28 PM ESTTornado WarningMLBSeminole, Volusia47 min
Dec 10, 4:29 PM ESTSpecial Weather StatementMLBSaint Lucie46 min
Dec 10, 4:33 PM ESTSpecial Marine WarningMLB117 min
Dec 10, 4:42 PM ESTTornado WarningMLBIndian River, Saint Lucie48 min
Dec 10, 4:59 PM ESTTornado WarningMLBSeminole, Volusia46 min
Dec 10, 5:02 PM ESTTornado WarningMLBVolusia43 min
Dec 10, 5:08 PM ESTSevere Thunderstorm WarningMLBVolusia37 min
Dec 10, 5:09 PM ESTTornado WarningMLBSeminole, Volusia21 min
Dec 10, 5:23 PM ESTSpecial Marine WarningMLB112 min

Nearby

Tornado Warnings in Florida, 2012Every tornado warning in 2012Tornadoes in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.