Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 59, NWS Melbourne, FL

July 2, 2012Lake County, Volusia County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jul 2, 2012, 5:43 PM EDT for Lake County, Volusia County, Florida. It was in force for 62 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 2, 2012, 5:43 PM EDT (21:43 UTC)
Expired: Jul 2, 2012, 6:45 PM EDT
In force: 62 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

Counties Lake County, FL, Volusia County, FL

The radar

The Jacksonville radar (KJAX), 136 km from the middle of the area, began a volume at 21:44 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, 9.7 hours before the alert went out and 132 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: 1335 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 882 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 46 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.

253 
WUUS52 KMLB 022143
SVRMLB
FLC069-127-022245-
/O.NEW.KMLB.SV.W.0059.120702T2143Z-120702T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
543 PM EDT MON JUL 2 2012

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN LAKE COUNTY IN FLORIDA
  NORTHWESTERN VOLUSIA COUNTY IN FLORIDA

* UNTIL 645 PM EDT.

* AT 536 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 6 MILES
  NORTHEAST OF LAKE GEORGE...OR 9 MILES NORTHWEST OF PIERSON...AND   
MOVING SOUTH AT 5 MPH. ADDITIONAL STRONG TO SEVERE STORMS WILL OCCUR 
NEAR PIERSON AND BARBERVILLE.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO... 
  PIERSON 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.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT 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 2927 8141 2927 8134 2923 8133 2915 8143
      2906 8164 2928 8165 2930 8166 2931 8168
      2932 8168 2938 8145 2940 8142
TIME...MOT...LOC 2141Z 342DEG 3KT 2935 8154

$$


KELLY

2 follow-up statements

447 
WWUS52 KMLB 022205
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
605 PM EDT MON JUL 2 2012

FLC069-022214-
/O.CAN.KMLB.SV.W.0059.000000T0000Z-120702T2245Z/
LAKE-
605 PM EDT MON JUL 2 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN LAKE COUNTY IS
CANCELLED...

LAT...LON 2927 8141 2927 8134 2923 8133 2915 8143
      2915 8148 2920 8152 2935 8155 2938 8145
      2940 8142
TIME...MOT...LOC 2204Z 026DEG 1KT 2931 8145

$$

FLC127-022245-
/O.CON.KMLB.SV.W.0059.000000T0000Z-120702T2245Z/
VOLUSIA-
605 PM EDT MON JUL 2 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR NORTHWESTERN VOLUSIA COUNTY...

AT 601 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 SEVILLE...AND WAS NEARLY STATIONARY.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
BAKERSTOWN AND PIERSON.

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 2927 8141 2927 8134 2923 8133 2915 8143
      2915 8148 2920 8152 2935 8155 2938 8145
      2940 8142
TIME...MOT...LOC 2204Z 026DEG 1KT 2931 8145

$$


KELLY

957 
WWUS52 KMLB 022240
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
640 PM EDT MON JUL 2 2012

FLC127-022248-
/O.EXP.KMLB.SV.W.0059.000000T0000Z-120702T2245Z/
VOLUSIA-
640 PM EDT MON JUL 2 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN VOLUSIA COUNTY
WILL EXPIRE AT 645 PM EDT...

THE SEVERE STORM THAT PROMPTED THE WARNING HAD WEAKENED...THUS THE 
WARNING HAS BEEN ALLOWED TO EXPIRE. DOPPLER RADAR ESTIMATES SHOW 
THAT 2.5 TO 3 INCHES OF RAIN HAVE FALLEN IN THE PAST HOUR OVER THIS 
AREA AND RAIN CONTINUES TO FALL. AN URBAN AND SMALL STREAM FLOOD 
ADVISORY REMAINS IN EFFECT.

LAT...LON 2927 8141 2927 8134 2923 8133 2915 8143
      2915 8148 2920 8152 2935 8155 2938 8145
      2940 8142
TIME...MOT...LOC 2238Z 026DEG 1KT 2930 8145

$$


BOWEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 3:59 PM EDT	Special Weather Statement	MLB	Indian River, Martin, Saint Lucie	61 min
Jul 2, 4:41 PM EDT	Areal Flood Advisory	MLB	Martin	79 min
Jul 2, 4:56 PM EDT	Severe Thunderstorm Warning	MLB	Martin	32 min
Jul 2, 5:26 PM EDT	Special Weather Statement	MLB	Volusia	64 min
Jul 2, 6:18 PM EDT	Areal Flood Advisory	MLB	Volusia	87 min
Jul 2, 6:31 PM EDT	Special Weather Statement	MLB	Okeechobee	44 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.