Alert archive / Florida / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 49, NWS Melbourne, FL

June 24, 2014Volusia County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jun 24, 2014, 4:13 PM EDT for Volusia County, Florida. It was in force for 30 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 24, 2014, 4:13 PM EDT (20:13 UTC)
Expired: Jun 24, 2014, 4:43 PM EDT
In force: 30 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

County Volusia County, FL

The radar

The Melbourne radar (KMLB), 114 km from the middle of the area, began a volume at 20:17 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 24, 4:15 PM EDT	HAIL 0.88	Daytona International S, FL	PENNY TO NICKEL SIZE HAIL OBSERVED AT DAYTONA INTERNATIONAL SPEEDWAY.

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, 8.2 hours before the alert went out and 84 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: 51 J/kg
Mixed-layer CIN: -143 J/kg
Mixed-layer LCL: 1312 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 23 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.

524 
WUUS52 KMLB 242013
SVRMLB
FLC127-242100-
/O.NEW.KMLB.SV.W.0049.140624T2013Z-140624T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
413 PM EDT TUE JUN 24 2014

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

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

* UNTIL 500 PM EDT.

* AT 412 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   
DAYTONA BEACH AIRPORT...AND MOVING SOUTH AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...
  DAYTONA BEACH SHORES...SOUTH DAYTONA...PORT ORANGE...NEW SMYRNA   
BEACH AIRPORT AND NEW SMYRNA BEACH.

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.

NATIONAL WEATHER SERVICE METEOROLOGISTS ALSO DETECTED SOME WEAK
ROTATION WITHIN THIS STORM. WHILE NOT IMMEDIATELY LIKELY...A TORNADO
MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO
A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A SMALL INTERIOR
ROOM.

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 2916 8097 2910 8092 2908 8093 2908 8091
      2907 8090 2904 8088 2903 8089 2901 8087
      2897 8112 2923 8120 2928 8103
TIME...MOT...LOC 2013Z 339DEG 12KT 2917 8106

$$


KELLY

1 follow-up statement

586 
WWUS52 KMLB 242043
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
443 PM EDT TUE JUN 24 2014

FLC127-242052-
/O.CAN.KMLB.SV.W.0049.000000T0000Z-140624T2100Z/
VOLUSIA-
443 PM EDT TUE JUN 24 2014

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN VOLUSIA 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 
DANGEROUS LIGHTNING STRIKES WILL CONTINUE TO BE POSSIBLE JUST WEST 
OF PORT ORANGE AND NEW SMYRNA BEACH.

LAT...LON 2916 8097 2910 8092 2908 8093 2908 8091
      2907 8090 2904 8088 2903 8089 2901 8087
      2897 8112 2923 8120 2928 8103
TIME...MOT...LOC 2042Z 339DEG 12KT 2908 8102

$$

KELLY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 4:05 PM EDT	Special Weather Statement	MLB	Osceola	40 min
Jun 24, 4:09 PM EDT	Special Weather Statement	MLB	Volusia	51 min
Jun 24, 4:41 PM EDT	Special Weather Statement	MLB	Brevard	49 min
Jun 24, 4:58 PM EDT	Severe Thunderstorm Warning	MLB	Brevard	29 min
Jun 24, 5:45 PM EDT	Special Weather Statement	MLB	Seminole	45 min
Jun 24, 6:29 PM EDT	Special Weather Statement	MLB	Seminole	31 min
Jun 24, 6:59 PM EDT	Special Weather Statement	MLB	Seminole	31 min
Jun 24, 7:26 PM EDT	Special Weather Statement	MLB	Seminole	34 min

Nearby

Severe Thunderstorm Warnings in Florida, 2014 Every severe thunderstorm warning in 2014

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.