Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 61, NWS Melbourne, FL

July 3, 2012Lake County, Volusia County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jul 3, 2012, 8:43 PM EDT for Lake County, Volusia 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
Jul 3, 2012, 8:43 PM EDT (00:43 UTC)
Expired
Jul 3, 2012, 9:13 PM EDT
In force
30 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon

Counties Lake County, FL, Volusia County, FL

The radar

The Melbourne radar (KMLB), 115 km from the middle of the area, began a volume at 00:46 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, 0.7 hours before the alert went out and 173 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, Tampa Bay, FL at 00:00Z on 2012-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 514 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 00:00Z on 2012-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 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
514 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
1528 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
10 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.

831 
WUUS52 KMLB 040043
SVRMLB
FLC069-127-040130-
/O.NEW.KMLB.SV.W.0061.120704T0043Z-120704T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
843 PM EDT TUE JUL 3 2012

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL LAKE COUNTY IN FLORIDA
  CENTRAL VOLUSIA COUNTY IN FLORIDA

* UNTIL 930 PM EDT.

* AT 836 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   
DELAND...AND WAS NEARLY STATIONARY.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO 
DELEON SPRINGS AND BARBERVILLE

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 2919 8122 2885 8122 2884 8133 2885 8136
      2886 8135 2887 8137 2883 8141 2883 8146
      2919 8145
TIME...MOT...LOC 0042Z 180DEG 3KT 2901 8130

$$


WEITLICH
2 follow-up statements
996 
WWUS52 KMLB 040058
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
858 PM EDT TUE JUL 3 2012

FLC069-127-040130-
/O.CON.KMLB.SV.W.0061.000000T0000Z-120704T0130Z/
LAKE-VOLUSIA-
858 PM EDT TUE JUL 3 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR CENTRAL VOLUSIA AND EAST CENTRAL LAKE COUNTIES...

AT 851 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE 
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS 
LOCATED NEAR DELAND AND WAS NEARLY STATIONARY. HAIL AND STRONG WINDS 
HAVE BEEN ALREADY BEEN REPORTED WITH THIS STORM. 

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PONCE 
DE LEON SPRINGS...LAKE WOODRUFF...GLENWOOD AND DAYTONA PARK ESTATES

LAT...LON 2919 8122 2885 8122 2884 8133 2885 8136
      2886 8135 2887 8137 2883 8141 2883 8146
      2919 8145
TIME...MOT...LOC 0055Z 180DEG 3KT 2902 8135

$$


WEITLICH
906 
WWUS52 KMLB 040113
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
913 PM EDT TUE JUL 3 2012

FLC069-127-040122-
/O.CAN.KMLB.SV.W.0061.000000T0000Z-120704T0130Z/
LAKE-VOLUSIA-
913 PM EDT TUE JUL 3 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL VOLUSIA AND EAST
CENTRAL LAKE 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...GUSTY WINDS... 
HEAVY RAINFALL PRODUCING LOCALIZED MINOR FLOODING AND DANGEROUS 
LIGHTNING STRIKES WILL CONTINUE TO BE POSSIBLE.

LAT...LON 2919 8122 2885 8122 2884 8133 2885 8136
      2886 8135 2887 8137 2883 8141 2883 8146
      2919 8145
TIME...MOT...LOC 0112Z 180DEG 3KT 2903 8135

$$


WEITLICH

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 3, 8:02 PM EDTSpecial Weather StatementMLBVolusia43 min
Jul 3, 8:15 PM EDTSpecial Weather StatementMLBLake30 min
Jul 3, 8:19 PM EDTSevere Thunderstorm WarningMLBLake28 min
Jul 3, 8:42 PM EDTAreal Flood AdvisoryMLBLake, Volusia93 min
Jul 4, 1:48 PM EDTSpecial Weather StatementMLBBrevard42 min
Jul 4, 1:50 PM EDTSpecial Weather StatementMLBBrevard40 min
Jul 4, 2:37 PM EDTSpecial Weather StatementMLBBrevard38 min
Jul 4, 3:05 PM EDTSpecial Weather StatementMLBLake40 min
Jul 4, 3:08 PM EDTSevere Thunderstorm WarningMLBLake, Orange23 min
Jul 4, 3:17 PM EDTSpecial Weather StatementMLBOsceola58 min
Jul 4, 3:21 PM EDTSpecial Weather StatementMLBVolusia54 min
Jul 4, 3:25 PM EDTSpecial Marine WarningMLB65 min
Jul 4, 4:01 PM EDTSpecial Weather StatementMLBIndian River59 min
Jul 4, 4:48 PM EDTAreal Flood AdvisoryMLBLake, Volusia57 min
Jul 4, 4:57 PM EDTSpecial Weather StatementMLBIndian River48 min
Jul 4, 5:32 PM EDTAreal Flood AdvisoryMLBLake58 min
Jul 4, 7:01 PM EDTSpecial Weather StatementMLBOkeechobee44 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.