Alert archive / Florida / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 55, NWS Melbourne, FL

June 14, 2011Martin County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jun 14, 2011, 5:57 PM EDT for Martin County, Florida. It was in force for 42 min. 3 reports 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, 5:57 PM EDT (21:57 UTC)
Expired: Jun 14, 2011, 6:39 PM EDT
In force: 42 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

County Martin County, FL

The radar

The Melbourne radar (KMLB), 117 km from the middle of the area, began a volume at 21:59 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, 5:59 PM EDT	TSTM WND GST 40	6 Sse Jensen Beach, FL	STATION REPORTED 35 KT/40 MPH WIND GUST.
Jun 14, 6:06 PM EDT	TSTM WND GST 49	5 Ese Palm City, FL	STATION REPORTED 49 MPH WIND GUST.
Jun 14, 6:30 PM EDT	TSTM WND GST 40	2 Wsw Hobe Sound, FL	STATION REPORTED 35 KT/40 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

Miami, FL (KMFL), launched 12:00Z, 10.0 hours before the alert went out and 147 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: 1622 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 802 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 67 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.

773 
WUUS52 KMLB 142157
SVRMLB
FLC085-142300-
/O.NEW.KMLB.SV.W.0055.110614T2157Z-110614T2300Z/

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

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN MARTIN COUNTY IN FLORIDA

* UNTIL 700 PM EDT.

* AT 556 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR STUART...AND MOVING SOUTH
  AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...
  ROCKY POINT...PORT SALERNO...HOBE SOUND BEACH...HOBE SOUND...
  JUPITER ISLAND...JOHNATHAN DICKINSON STATE PARK AND JONATHAN
  DICKINSON STATE PARK

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 2697 8014 2696 8014 2696 8037 2720 8034
      2721 8029 2726 8029 2727 8024 2724 8022
      2726 8022 2726 8019 2719 8015 2717 8016
      2718 8018 2716 8019 2715 8015 2697 8007
TIME...MOT...LOC 2157Z 342DEG 10KT 2719 8021

$$



52

1 follow-up statement

122 
WWUS52 KMLB 142239
SVSMLB

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

FLC085-142249-
/O.CAN.KMLB.SV.W.0055.000000T0000Z-110614T2300Z/
MARTIN-
639 PM EDT TUE JUN 14 2011

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MARTIN 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.

LAT...LON 2697 8014 2696 8014 2696 8037 2720 8034
      2721 8029 2726 8029 2727 8024 2724 8022
      2726 8022 2726 8019 2719 8015 2717 8016
      2718 8018 2716 8019 2715 8015 2697 8007
TIME...MOT...LOC 2239Z 342DEG 10KT 2708 8017

$$


52

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, 3:29 PM EDT	Severe Thunderstorm Warning	MLB	Brevard, Orange, Seminole, Volusia	61 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, 5:59 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.