Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 54, NWS Melbourne, FL

June 10, 2012Brevard County, Orange County, Osceola County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jun 10, 2012, 9:50 PM EDT for Brevard County, Orange County, Osceola County, Florida. It was in force for 30 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 10, 2012, 9:50 PM EDT (01:50 UTC)
Expired: Jun 10, 2012, 10:20 PM EDT
In force: 30 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

Counties Brevard County, FL, Orange County, FL, Osceola County, FL

The radar

The Melbourne radar (KMLB), 28 km from the middle of the area, began a volume at 01:50 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

Tampa Bay, FL (KTBW), launched 00:00Z, 1.8 hours before the alert went out and 185 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3486 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 950 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

101 
WUUS52 KMLB 110150
SVRMLB
FLC009-095-097-110245-
/O.NEW.KMLB.SV.W.0054.120611T0150Z-120611T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
950 PM EDT SUN JUN 10 2012

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

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

* UNTIL 1045 PM EDT.

* AT 945 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 7 MILES WEST OF LONE CABBAGE
  FISH CAMP...AND MOVING EAST AT 25 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO... 
CANAVERAL GROVES...PORT SAINT JOHN...  SHARPES...COCOA... KENNEDY 
SPACE CENTER... ROCKLEDGE...MERRITT ISLAND...VIERA... SUNTREE...CAPE 
CANAVERAL...COCOA BEACH...PORT CANAVERAL...PATRICK AIR FORCE 
BASE...SATELLITE BEACH AND INDIAN HARBOUR BEACH.

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.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 2844 8053 2842 8057 2836 8060 2826 8060
      2815 8058 2816 8062 2820 8064 2816 8063
      2827 8116 2848 8113 2854 8077 2856 8056
      2851 8055 2848 8053
TIME...MOT...LOC 0149Z 283DEG 23KT 2834 8095

$$


KELLY

1 follow-up statement

131 
WWUS52 KMLB 110220
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
1020 PM EDT SUN JUN 10 2012

FLC009-095-097-110228-
/O.CAN.KMLB.SV.W.0054.000000T0000Z-120611T0245Z/
ORANGE-OSCEOLA-BREVARD-
1020 PM EDT SUN JUN 10 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BREVARD...NORTHEASTERN
OSCEOLA AND SOUTHEASTERN ORANGE COUNTIES IS CANCELLED...

THE SEVERE STORM THAT PROMPTED THE WARNING HAD WEAKENED AND WAS NO
LONGER CAPABLE OF PRODUCING LARGE HAIL OR DAMAGING WINDS. AS A 
RESULT...THE WARNING HAS BEEN CANCELLED. HOWEVER...HEAVY RAIN... 
GUSTY WINDS AND DANGEROUS LIGHTNING STRIKES WILL OCCUR OVER CENTRAL 
AND SOUTHERN BREVARD COUNTY THROUGH 11 PM.

LAT...LON 2844 8053 2842 8057 2836 8060 2826 8060
      2815 8058 2816 8062 2820 8064 2816 8063
      2827 8116 2848 8113 2854 8077 2856 8056
      2851 8055 2848 8053
TIME...MOT...LOC 0218Z 283DEG 23KT 2830 8074

$$


KELLY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 8:09 PM EDT	Special Weather Statement	MLB	Osceola	36 min
Jun 10, 8:12 PM EDT	Severe Thunderstorm Warning	MLB	Volusia	26 min
Jun 10, 8:38 PM EDT	Special Weather Statement	MLB	Orange, Seminole, Volusia	52 min
Jun 10, 8:50 PM EDT	Severe Thunderstorm Warning	MLB	Lake, Orange, Osceola	55 min
Jun 10, 9:13 PM EDT	Severe Thunderstorm Warning	MLB	Orange, Osceola	47 min
Jun 10, 9:14 PM EDT	Areal Flood Advisory	MLB	Lake, Orange, Osceola	76 min
Jun 10, 9:56 PM EDT	Special Marine Warning	MLB		94 min
Jun 10, 10:19 PM EDT	Special Weather Statement	MLB	Brevard	41 min
Jun 10, 11:27 PM EDT	Special Weather Statement	MLB	Okeechobee	48 min

Nearby

Severe Thunderstorm Warnings in Florida, 2012 Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.