Alert archive / Florida / Tornado Warnings in 2011

Tornado Warning 23, NWS Melbourne, FL

June 18, 2011Orange County, Osceola County, Florida

NWS Melbourne, FL issued this tornado warning at Jun 18, 2011, 7:10 PM EDT for Orange County, Osceola County, Florida. It was in force for 50 min. 2 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
Jun 18, 2011, 7:10 PM EDT (23:10 UTC)
Expired
Jun 18, 2011, 8:00 PM EDT
In force
50 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon

Counties Orange County, FL, Osceola County, FL

The radar

The Melbourne radar (KMLB), 75 km from the middle of the area, began a volume at 23:12 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.

What was reported inside it

TimeReportWhereRemark
Jun 18, 7:11 PM EDTTSTM WND GST 70Orlando, FLKMCO ORLANDO INTERNATIONAL AIRPORT ASOS MEASURED A 61 KT/70 MPH WIND GUST.
Jun 18, 7:30 PM EDTTSTM WND DMG3 S Conway, FLWFTV CHANNEL 9 REPORTED LARGE TREE FELL ONTO PART OF ROOF OF HOUSE NEAR INTERSECTION OF SIMMS AVE. AND MERRYWEATHER DR. IN ORLANDO.

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, 11.2 hours before the alert went out and 83 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 2011-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 122 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 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 2011-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 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
122 J/kg
Mixed-layer CIN
-222 J/kg
Mixed-layer LCL
1401 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
28 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.

676 
WFUS52 KMLB 182310
TORMLB
FLC095-097-190000-
/O.NEW.KMLB.TO.W.0023.110618T2310Z-110619T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
710 PM EDT SAT JUN 18 2011

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL ORANGE COUNTY IN FLORIDA...
  THIS INCLUDES THE CITIES OF...ORLANDO INTERNATIONAL AIRPORT...
  ORLANDO...CONWAY...
  NORTHWESTERN OSCEOLA COUNTY IN FLORIDA...
  THIS INCLUDES THE CITIES OF...KISSIMMEE...EAST LAKE TOHO...BUENA
  VENTURA LAKES...

* UNTIL 800 PM EDT.

* AT 708 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR BUENA
  VENTURA LAKES...MOVING NORTHEAST AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PINE
  CASTLE AND BELLE ISLE

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 2851 8140 2843 8112 2825 8132 2829 8148
TIME...MOT...LOC 2311Z 236DEG 9KT 2834 8139

$$


MOSES
2 follow-up statements
324 
WWUS52 KMLB 182349
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
749 PM EDT SAT JUN 18 2011

FLC097-182358-
/O.CAN.KMLB.TO.W.0023.000000T0000Z-110619T0000Z/
OSCEOLA-
749 PM EDT SAT JUN 18 2011

...THE TORNADO WARNING FOR NORTHWESTERN OSCEOLA COUNTY IS
CANCELLED...

LAT...LON 2851 8140 2843 8112 2834 8130 2834 8134
      2838 8143
TIME...MOT...LOC 2348Z 240DEG 9KT 2842 8131

$$

FLC095-190000-
/O.CON.KMLB.TO.W.0023.000000T0000Z-110619T0000Z/
ORANGE-
749 PM EDT SAT JUN 18 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM EDT FOR SOUTH
CENTRAL ORANGE COUNTY...

AT 744 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO 
DETECT A TORNADO. THIS TORNADO WAS LOCATED NEAR ORLANDO 
INTERNATIONAL AIRPORT...MOVING NORTHEAST AT 10 TO 15 MPH.

THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
INDICATED COUNTY.

LAT...LON 2851 8140 2843 8112 2834 8130 2834 8134
      2838 8143
TIME...MOT...LOC 2348Z 240DEG 9KT 2842 8131

$$

GUSEMAN
961 
WWUS52 KMLB 190003
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
803 PM EDT SAT JUN 18 2011

FLC095-190013-
/O.EXP.KMLB.TO.W.0023.000000T0000Z-110619T0000Z/
ORANGE-
803 PM EDT SAT JUN 18 2011

...THE TORNADO WARNING FOR SOUTH CENTRAL ORANGE COUNTY HAS EXPIRED...

THE SEVERE STORM THAT PROMPTED THE TORNADO WARNING HAS WEAKENED AND 
MOVED EAST OF THE AREA...THUS THE WARNING HAS BEEN ALLOWED TO 
EXPIRE. 

LAT...LON 2851 8140 2843 8112 2834 8130 2834 8134
      2838 8143
TIME...MOT...LOC 2349Z 240DEG 9KT 2842 8131

$$


MOSES

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 17, 8:15 PM EDTSevere Thunderstorm WarningMLBSeminole, Volusia60 min
Jun 17, 8:45 PM EDTAreal Flood AdvisoryMLBLake, Orange, Seminole, Volusia2 hr
Jun 17, 9:11 PM EDTSpecial Weather StatementMLBSeminole49 min
Jun 18, 3:45 PM EDTSpecial Weather StatementMLBFlagler45 min
Jun 18, 4:22 PM EDTSpecial Weather StatementMLBLake38 min
Jun 18, 4:49 PM EDTSpecial Weather StatementMLBVolusia41 min
Jun 18, 4:51 PM EDTSpecial Marine WarningMLB114 min
Jun 18, 4:51 PM EDTSpecial Weather StatementMLBIndian River39 min
Jun 18, 4:53 PM EDTSpecial Weather StatementMLBOsceola82 min
Jun 18, 5:01 PM EDTSevere Thunderstorm WarningMLBVolusia44 min
Jun 18, 5:02 PM EDTSpecial Weather StatementMLBVolusia43 min
Jun 18, 5:08 PM EDTSevere Thunderstorm WarningMLBLake, Volusia37 min
Jun 18, 5:10 PM EDTTornado WarningMLBVolusia46 min
Jun 18, 5:18 PM EDTSevere Thunderstorm WarningMLBBrevard, Indian River57 min
Jun 18, 5:39 PM EDTTornado WarningMLBVolusia51 min
Jun 18, 5:56 PM EDTSevere Thunderstorm WarningMLBVolusia64 min
Jun 18, 6:00 PM EDTSpecial Marine WarningMLB2 hr
Jun 18, 6:13 PM EDTTornado WarningMLBSeminole, Volusia47 min
Jun 18, 6:18 PM EDTSpecial Weather StatementMLBOrange, Seminole117 min
Jun 18, 6:18 PM EDTSevere Thunderstorm WarningMLBSeminole, Volusia57 min
Jun 18, 6:43 PM EDTSevere Thunderstorm WarningMLBOrange, Osceola, Seminole62 min
Jun 18, 6:52 PM EDTSevere Thunderstorm WarningMLBBrevard53 min
Jun 18, 7:22 PM EDTTornado WarningMLBOrange, Seminole38 min
Jun 18, 7:29 PM EDTSevere Thunderstorm WarningMLBBrevard, Orange, Osceola46 min
Jun 18, 7:53 PM EDTAreal Flood AdvisoryMLBBrevard, Orange, Seminole112 min
Jun 18, 7:54 PM EDTSpecial Marine WarningMLB111 min

Nearby

Tornado Warnings in Florida, 2011Every tornado warning in 2011Tornadoes in 2011

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; radar from the NEXRAD Level II archive.