Alert archive / Florida / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 52, NWS Melbourne, FL

June 14, 20114 counties in Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jun 14, 2011, 3:29 PM EDT for 4 counties in Florida. It was in force for 61 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 14, 2011, 3:29 PM EDT (19:29 UTC)
Expired: Jun 14, 2011, 4:30 PM EDT
In force: 61 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

Counties Brevard County, FL, Orange County, FL, Seminole County, FL, Volusia County, FL

The radar

The Melbourne radar (KMLB), 39 km from the middle of the area, began a volume at 19:30 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 14, 4:02 PM EDT	TSTM WND GST 51	2 Ssw Cape Canaveral, FL	STATION REPORTED 44 KT/51 MPH WIND GUST.

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, 7.5 hours before the alert went out and 8 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: 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.

995 
WUUS52 KMLB 141929
SVRMLB
FLC009-095-117-127-142030-
/O.NEW.KMLB.SV.W.0052.110614T1929Z-110614T2030Z/

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

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BREVARD COUNTY IN FLORIDA
  NORTHEAST ORANGE COUNTY IN FLORIDA
  SEMINOLE COUNTY IN FLORIDA
  SOUTHEASTERN VOLUSIA COUNTY IN FLORIDA

* UNTIL 430 PM EDT.

* AT 325 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
  IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM LAKE JESSUP TO 7 MILES EAST OF KENNEDY SPACE
  CENTER...OR ALONG A LINE EXTENDING FROM LAKE JESSUP TO 8 MILES
  SOUTHEAST OF PLAYALINDA BEACH...AND MOVING SOUTHEAST AT 20 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...
  WINTER PARK...GOLDENROD...TITUSVILLE...AZALEA PARK...OVIEDO...UNION
  PARK...BITHLO...TITUSVILLE AIRPORT...CHRISTMAS...SHARPES...PORT
  CANAVERAL...MERRITT ISLAND...CAPE CANAVERAL...CANAVERAL GROVES...
  PORT SAINT JOHN...COCOA BEACH AND COCOA

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 2833 8060 2839 8063 2857 8059 2858 8060
      2835 8065 2835 8066 2838 8072 2860 8073
      2862 8079 2871 8075 2879 8084 2836 8073
      2855 8143 2885 8126 2887 8083 2866 8067
      2887 8082 2887 8077 2845 8052
TIME...MOT...LOC 1928Z 311DEG 17KT 2873 8123 2854 8055

$$

SEDLOCK

3 follow-up statements

435 
WWUS52 KMLB 142000
SVSMLB

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

FLC009-095-117-127-142030-
/O.CON.KMLB.SV.W.0052.000000T0000Z-110614T2030Z/
ORANGE-SEMINOLE-VOLUSIA-BREVARD-
400 PM EDT TUE JUN 14 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT 
FOR NORTHERN BREVARD...EXTREME SOUTHERN VOLUSIA...SEMINOLE AND EAST 
CENTRAL ORANGE COUNTIES...

AT 353 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM LAKE JESSUP TO 9 MILES NORTHEAST OF PORT 
CANAVERAL...MOVING SOUTHEAST AT 15 TO 20 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO KENNEDY
SPACE CENTER...OVIEDO...TITUSVILLE AIRPORT...CAPE CANAVERAL...PORT 
SAINT JOHN...COCOA...AND CHRISTMAS.

LAT...LON 2834 8060 2839 8064 2836 8074 2855 8143
      2885 8125 2878 8086 2872 8083 2876 8070
      2869 8066 2869 8067 2875 8071 2872 8083
      2859 8080 2871 8074 2860 8060 2839 8066
      2854 8058 2854 8057 2846 8052 2844 8052
TIME...MOT...LOC 1958Z 311DEG 17KT 2871 8124 2845 8043

$$

GUSEMAN

052 
WWUS52 KMLB 142022
SVSMLB

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

FLC009-095-117-127-142030-
/O.CON.KMLB.SV.W.0052.000000T0000Z-110614T2030Z/
ORANGE-SEMINOLE-VOLUSIA-BREVARD-
422 PM EDT TUE JUN 14 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR NORTHERN BREVARD...SOUTHEASTERN VOLUSIA...SOUTHEASTERN SEMINOLE
AND EAST CENTRAL ORANGE COUNTIES...

AT 416 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM UNIVERSITY OF CENTRAL FLORIDA TO 11 MILES EAST OF PORT
CANAVERAL...OR ALONG A LINE EXTENDING FROM OVIEDO TO 11 MILES EAST OF
PORT CANAVERAL...MOVING SOUTHEAST AT 15 TO 20 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
UNIVERSITY PARK...CHRISTMAS...CAPE CANAVERAL AND COCOA.

LAT...LON 2834 8060 2855 8143 2877 8121 2880 8095
      2872 8083 2872 8067 2869 8066 2872 8073
      2872 8083 2865 8082 2860 8080 2859 8080
      2871 8074 2860 8060 2839 8066 2854 8057
      2853 8056 2848 8053 2846 8052 2845 8052
TIME...MOT...LOC 2021Z 311DEG 17KT 2860 8116 2833 8040

$$

GUSEMAN

620 
WWUS52 KMLB 142029
SVSMLB

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

FLC009-095-117-127-142039-
/O.EXP.KMLB.SV.W.0052.000000T0000Z-110614T2030Z/
ORANGE-SEMINOLE-VOLUSIA-BREVARD-
429 PM EDT TUE JUN 14 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN BREVARD...
SOUTHEASTERN VOLUSIA...EASTERN SEMINOLE AND EAST CENTRAL ORANGE 
COUNTIES WILL BE ALLOWED TO EXPIRE AT 430 PM EDT...

LAT...LON 2834 8060 2855 8143 2877 8121 2880 8095
      2872 8083 2872 8067 2869 8066 2872 8073
      2872 8083 2865 8082 2860 8080 2859 8080
      2871 8074 2860 8060 2839 8066 2854 8057
      2853 8056 2848 8053 2846 8052 2845 8052
TIME...MOT...LOC 2029Z 311DEG 17KT 2858 8113 2830 8037

$$

GUSEMAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 14, 1:46 PM EDT	Special Weather Statement	MLB	Orange	44 min
Jun 14, 2:29 PM EDT	Special Weather Statement	MLB	Osceola	61 min
Jun 14, 2:43 PM EDT	Special Weather Statement	MLB	Seminole	47 min
Jun 14, 2:44 PM EDT	Special Marine Warning	MLB		91 min
Jun 14, 2:46 PM EDT	Severe Thunderstorm Warning	MLB	Brevard, Volusia	44 min
Jun 14, 2:51 PM EDT	Severe Thunderstorm Warning	MLB	Osceola	54 min
Jun 14, 3:03 PM EDT	Severe Thunderstorm Warning	MLB	Brevard, Osceola	42 min
Jun 14, 3:59 PM EDT	Special Marine Warning	MLB		91 min
Jun 14, 4:25 PM EDT	Special Marine Warning	MLB		80 min
Jun 14, 5:04 PM EDT	Severe Thunderstorm Warning	MLB	Orange, Osceola	56 min
Jun 14, 5:18 PM EDT	Special Weather Statement	MLB	Martin	42 min
Jun 14, 5:21 PM EDT	Severe Thunderstorm Warning	MLB	Martin, Saint Lucie	39 min
Jun 14, 5:33 PM EDT	Special Marine Warning	MLB		87 min
Jun 14, 5:35 PM EDT	Special Weather Statement	MLB	Seminole	40 min
Jun 14, 5:57 PM EDT	Severe Thunderstorm Warning	MLB	Martin	42 min
Jun 14, 5:59 PM EDT	Severe Thunderstorm Warning	MLB	Osceola	50 min
Jun 14, 6:19 PM EDT	Special Weather Statement	MLB	Seminole	41 min
Jun 14, 6:29 PM EDT	Severe Thunderstorm Warning	MLB	Brevard, Orange	48 min
Jun 14, 7:17 PM EDT	Special Weather Statement	MLB	Seminole, Volusia	43 min

Nearby

Severe Thunderstorm Warnings in Florida, 2011 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.