Alert archive / Florida / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 53, NWS Melbourne, FL

June 14, 2011Orange County, Osceola County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jun 14, 2011, 5:04 PM EDT for Orange County, Osceola County, Florida. It was in force for 56 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
Jun 14, 2011, 5:04 PM EDT (21:04 UTC)
Expired
Jun 14, 2011, 6:00 PM EDT
In force
56 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon

Counties Orange County, FL, Osceola County, FL

The radar

The Melbourne radar (KMLB), 50 km from the middle of the area, began a volume at 21:04 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 nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 9.1 hours before the alert went out and 59 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 2011-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 271 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cape Canaveral, FL at 12:00Z on 2011-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 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
271 J/kg
Mixed-layer CIN
-113 J/kg
Mixed-layer LCL
1216 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
16 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.

784 
WUUS52 KMLB 142104
SVRMLB
FLC095-097-142200-
/O.NEW.KMLB.SV.W.0053.110614T2104Z-110614T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
504 PM EDT TUE JUN 14 2011

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN ORANGE COUNTY IN FLORIDA
  NORTHEASTERN OSCEOLA COUNTY IN FLORIDA

* UNTIL 600 PM EDT.

* AT 502 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  LAKE MARY JANE...OR 7 MILES NORTH OF NARCOOSSEE...AND MOVING SOUTH
  AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...
  HARMONY AND HOLOPAW

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 58 MILES AN
HOUR AND OR LARGE DESTRUCTIVE HAIL. FREQUENT TO EXCESSIVE LIGHTNING
AND VERY HEAVY RAIN WILL ALSO BE POSSIBLE. IF THE STORM APPROACHES
YOU...SEEK SHELTER IN AN ENCLOSED BUILDING ON THE LOWEST FLOOR. KEEP
AWAY FROM WINDOWS.

&&

LAT...LON 2852 8117 2833 8086 2830 8087 2803 8119
      2840 8129
TIME...MOT...LOC 2104Z 338DEG 12KT 2838 8119

$$


52
1 follow-up statement
898 
WWUS52 KMLB 142140
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
540 PM EDT TUE JUN 14 2011

FLC095-097-142200-
/O.CON.KMLB.SV.W.0053.000000T0000Z-110614T2200Z/
OSCEOLA-ORANGE-
540 PM EDT TUE JUN 14 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR SOUTHEASTERN ORANGE AND NORTHEASTERN OSCEOLA COUNTIES...

AT 540 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR NARCOOSSEE...MOVING SOUTH AT 15 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PINE
GROVE...REPTILE WORLD...HARMONY...HOLOPAW AND ALLIGATOR LAKE

LAT...LON 2852 8117 2833 8086 2830 8087 2803 8119
      2840 8129
TIME...MOT...LOC 2140Z 338DEG 12KT 2828 8123

$$


52

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 1:46 PM EDTSpecial Weather StatementMLBOrange44 min
Jun 14, 2:29 PM EDTSpecial Weather StatementMLBOsceola61 min
Jun 14, 2:43 PM EDTSpecial Weather StatementMLBSeminole47 min
Jun 14, 2:44 PM EDTSpecial Marine WarningMLB91 min
Jun 14, 2:46 PM EDTSevere Thunderstorm WarningMLBBrevard, Volusia44 min
Jun 14, 2:51 PM EDTSevere Thunderstorm WarningMLBOsceola54 min
Jun 14, 3:03 PM EDTSevere Thunderstorm WarningMLBBrevard, Osceola42 min
Jun 14, 3:29 PM EDTSevere Thunderstorm WarningMLBBrevard, Orange, Seminole, Volusia61 min
Jun 14, 3:59 PM EDTSpecial Marine WarningMLB91 min
Jun 14, 4:25 PM EDTSpecial Marine WarningMLB80 min
Jun 14, 5:18 PM EDTSpecial Weather StatementMLBMartin42 min
Jun 14, 5:21 PM EDTSevere Thunderstorm WarningMLBMartin, Saint Lucie39 min
Jun 14, 5:33 PM EDTSpecial Marine WarningMLB87 min
Jun 14, 5:35 PM EDTSpecial Weather StatementMLBSeminole40 min
Jun 14, 5:57 PM EDTSevere Thunderstorm WarningMLBMartin42 min
Jun 14, 5:59 PM EDTSevere Thunderstorm WarningMLBOsceola50 min
Jun 14, 6:19 PM EDTSpecial Weather StatementMLBSeminole41 min
Jun 14, 6:29 PM EDTSevere Thunderstorm WarningMLBBrevard, Orange48 min
Jun 14, 7:17 PM EDTSpecial Weather StatementMLBSeminole, Volusia43 min

Nearby

Severe Thunderstorm Warnings in Florida, 2011Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.