Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 5, NWS Melbourne, FL

March 4, 2012Brevard County, Indian River County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Mar 4, 2012, 7:57 AM EST for Brevard County, Indian River County, Florida. It was in force for 46 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
Mar 4, 2012, 7:57 AM EST (12:57 UTC)
Expired
Mar 4, 2012, 8:43 AM EST
In force
46 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon

Counties Brevard County, FL, Indian River County, FL

The radar

The Melbourne radar (KMLB), 39 km from the middle of the area, began a volume at 12:57 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, 1.0 hours before the alert went out and 78 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 2012-03-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 676 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 2012-03-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 395 square meters per square second.1939587897Sfc1 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
676 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
726 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
395 m²/s²
0-3 km storm-relative helicity
383 m²/s²
Significant tornado parameter
1.8
Supercell composite
12.6

Open this sounding in Storm Lab

The text

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

406 
WUUS52 KMLB 041257
SVRMLB
FLC009-061-041400-
/O.NEW.KMLB.SV.W.0005.120304T1257Z-120304T1400Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
757 AM EST SUN MAR 4 2012

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN BREVARD COUNTY IN FLORIDA
  INDIAN RIVER COUNTY IN FLORIDA

* UNTIL 900 AM EST.

* AT 753 AM EST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A 
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS   
OF 60 MPH.  THIS STORM WAS LOCATED NEAR FELLSMERE...AND MOVING EAST 
AT 40 MPH.  IN ADDITION...A SECOND STORM CAPABLE OF PRODUCING 
DAMAGING WINDS GUSTS WAS LOCATED SOUTH OF BLUE CYPRESS LAKE...MOVING 
EAST AT 40 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...
  POINTE WEST...VERO LAKE ESTATES...SEBASTIAN HIGHLANDS...MICCO...
  BAREFOOT BAY...ROSELAND...GRANT...GIFFORD...VERO BEACH...
  SEBASTIAN...WABASSO...WINTER BEACH AND INDIAN RIVER SHORES

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 2765 8036 2756 8077 2764 8078 2764 8082
      2777 8088 2795 8049 2790 8047 2784 8045
      2787 8048 2787 8049 2786 8049 2782 8045
      2782 8044
TIME...MOT...LOC 1256Z 248DEG 36KT 2780 8063

$$



BRAGAW
3 follow-up statements
589 
WWUS52 KMLB 041315
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
815 AM EST SUN MAR 4 2012

FLC009-061-041400-
/O.CON.KMLB.SV.W.0005.000000T0000Z-120304T1400Z/
INDIAN RIVER-BREVARD-
815 AM EST SUN MAR 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 AM EST
FOR SOUTHEASTERN BREVARD AND INDIAN RIVER COUNTIES...

AT 810 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A LINE OF THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS 
IN EXCESS OF 60 MPH.  THE LINE EXTENDED FROM SEBASTIAN INLET TO THE 
FLORIDA TURNPIKE IN NORTHWEST SAINT LUCIE COUNTY...MOVING EAST AT 40 
MPH.

LAT...LON 2765 8036 2756 8077 2764 8078 2764 8082
      2777 8088 2795 8049 2790 8047 2784 8045
      2787 8048 2787 8049 2786 8049 2782 8045
      2782 8044
TIME...MOT...LOC 1313Z 248DEG 36KT 2786 8045

$$




BRAGAW
389 
WWUS52 KMLB 041328
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
828 AM EST SUN MAR 4 2012

FLC009-041337-
/O.CAN.KMLB.SV.W.0005.000000T0000Z-120304T1400Z/
BREVARD-
828 AM EST SUN MAR 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BREVARD COUNTY IS
CANCELLED...

LAT...LON 2759 8063 2782 8056 2782 8055 2782 8051
      2786 8049 2784 8047 2785 8045 2783 8047
      2781 8044 2765 8036
TIME...MOT...LOC 1327Z 248DEG 36KT 2791 8030

$$

FLC061-041400-
/O.CON.KMLB.SV.W.0005.000000T0000Z-120304T1400Z/
INDIAN RIVER-
828 AM EST SUN MAR 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 AM EST
FOR EASTERN INDIAN RIVER COUNTY...

AT 823 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A LINE OF THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS 
IN EXCESS OF 60 MPH.  THE LINE EXTENDED FROM WABASSO BEACH TO 
PARADISE PARK...MOVING EAST AT 40 MPH.

LAT...LON 2759 8063 2782 8056 2782 8055 2782 8051
      2786 8049 2784 8047 2785 8045 2783 8047
      2781 8044 2765 8036
TIME...MOT...LOC 1327Z 248DEG 36KT 2791 8030

$$




BRAGAW
204 
WWUS52 KMLB 041343
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
843 AM EST SUN MAR 4 2012

FLC061-041352-
/O.CAN.KMLB.SV.W.0005.000000T0000Z-120304T1400Z/
INDIAN RIVER-
843 AM EST SUN MAR 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN INDIAN RIVER COUNTY IS
CANCELLED...

THE SEVERE STORM THAT PROMPTED THE WARNING HAD WEAKENED AND WAS NO 
LONGER CAPABLE OF PRODUCING DAMAGING WINDS. AS A RESULT...THE 
WARNING HAS BEEN CANCELLED. 

LAT...LON 2759 8063 2782 8056 2782 8055 2782 8051
      2786 8049 2784 8047 2785 8045 2783 8047
      2781 8044 2765 8036
TIME...MOT...LOC 1342Z 248DEG 36KT 2797 8014

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 4, 2:40 AM ESTWind AdvisoryMLBLake, Okeechobee, Orange, Osceola, Seminole, Volusia14 hr
Mar 4, 2:59 AM ESTFire Weather WatchMLBLake, Okeechobee, Orange, Osceola, Seminole, Volusia24 hr
Mar 4, 2:59 AM ESTRed Flag WarningMLBLake, Orange, Osceola, Seminole, Volusia16 hr
Mar 4, 4:20 AM ESTSpecial Weather StatementMLBLake85 min
Mar 4, 5:26 AM ESTSpecial Marine WarningMLB2 hr
Mar 4, 5:36 AM ESTSpecial Weather StatementMLBLake, Seminole, Volusia54 min
Mar 4, 5:37 AM ESTSpecial Marine WarningMLB83 min
Mar 4, 5:39 AM ESTSevere Thunderstorm WarningMLBVolusia18 min
Mar 4, 5:59 AM ESTSevere Thunderstorm WarningMLBVolusia31 min
Mar 4, 6:19 AM ESTSpecial Weather StatementMLBBrevard, Indian River, Orange, Osceola, Seminole86 min
Mar 4, 7:00 AM ESTSpecial Marine WarningMLB2 hr
Mar 4, 7:44 AM ESTSpecial Weather StatementMLBIndian River, Okeechobee46 min
Mar 4, 8:27 AM ESTSpecial Weather StatementMLBMartin, Saint Lucie93 min
Mar 4, 8:58 AM ESTSpecial Marine WarningMLB107 min

Nearby

Severe Thunderstorm Warnings in Florida, 2012Every 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.