Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 55, NWS Melbourne, FL

June 13, 2012Brevard County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jun 13, 2012, 6:34 PM EDT for Brevard County, Florida. It was in force for 35 min. 1 report 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 13, 2012, 6:34 PM EDT (22:34 UTC)
Expired: Jun 13, 2012, 7:09 PM EDT
In force: 35 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

County Brevard County, FL

The radar

The Melbourne radar (KMLB), 55 km from the middle of the area, began a volume at 22:37 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

Time	Report	Where	Remark
Jun 13, 7:08 PM EDT	TSTM WND GST 46	Titusville Airport, FL	KTIX OBSERVATION 2308Z WIND 31014G40 KT.

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, 10.6 hours before the alert went out and 35 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: 98 J/kg
Mixed-layer CIN: -120 J/kg
Mixed-layer LCL: 1019 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 87 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.

202 
WUUS52 KMLB 132234
SVRMLB
FLC009-132330-
/O.NEW.KMLB.SV.W.0055.120613T2234Z-120613T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
634 PM EDT WED JUN 13 2012

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN BREVARD COUNTY IN FLORIDA

* UNTIL 730 PM EDT.

* AT 632 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR MIMS...AND MOVING SOUTHEAST
  AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...
  TITUSVILLE...MERRITT ISLAND WILDLIFE REFUGE...TITUSVILLE AIRPORT...
  PORT SAINT JOHN AND CANAVERAL GROVES

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 2852 8074 2852 8077 2849 8076 2842 8083
      2847 8088 2850 8088 2854 8094 2856 8093
      2861 8097 2870 8096 2874 8092 2871 8082
      2866 8082 2866 8079 2870 8079 2865 8062
TIME...MOT...LOC 2234Z 306DEG 15KT 2863 8090

$$




BRAGAW

2 follow-up statements

213 
WWUS52 KMLB 132248
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
648 PM EDT WED JUN 13 2012

FLC009-132330-
/O.CON.KMLB.SV.W.0055.000000T0000Z-120613T2330Z/
BREVARD-
648 PM EDT WED JUN 13 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR NORTHWESTERN BREVARD COUNTY...

AT 642 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR NEAR TITUSVILLE... 
MOVING SOUTHEAST AT 15 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MERRITT
ISLAND WILDLIFE REFUGE...TITUSVILLE AIRPORT...SPACE COAST 
AIRPORT...AND PORT SAINT JOHN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 2852 8074 2852 8077 2849 8076 2842 8083
      2847 8088 2850 8088 2854 8094 2856 8093
      2861 8097 2870 8096 2874 8092 2871 8082
      2866 8082 2866 8079 2870 8079 2865 8062
TIME...MOT...LOC 2247Z 306DEG 15KT 2860 8085

$$



BRAGAW

140 
WWUS52 KMLB 132309
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
709 PM EDT WED JUN 13 2012

FLC009-132319-
/O.CAN.KMLB.SV.W.0055.000000T0000Z-120613T2330Z/
BREVARD-
709 PM EDT WED JUN 13 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BREVARD COUNTY 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 AND 
FREQUENT DANGEROUS LIGHTNING STRIKES WILL CONTINUE TO BE POSSIBLE.

LAT...LON 2852 8074 2852 8077 2849 8076 2842 8083
      2847 8088 2850 8088 2854 8094 2856 8093
      2861 8097 2870 8096 2874 8092 2871 8082
      2866 8082 2866 8079 2870 8079 2865 8062
TIME...MOT...LOC 2309Z 306DEG 15KT 2855 8077

$$

JP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 5:35 PM EDT	Special Weather Statement	MLB	Seminole	25 min
Jun 13, 5:38 PM EDT	Special Weather Statement	MLB	Indian River	37 min
Jun 13, 6:29 PM EDT	Special Weather Statement	MLB	Okeechobee	46 min
Jun 13, 6:31 PM EDT	Special Weather Statement	MLB	Seminole	44 min
Jun 13, 6:49 PM EDT	Special Marine Warning	MLB		86 min
Jun 13, 7:47 PM EDT	Special Weather Statement	MLB	Osceola	43 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.