Alert archive / Florida / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 41, NWS Melbourne, FL

May 14, 2011Martin County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at May 14, 2011, 3:43 PM EDT for Martin County, Florida. It was in force for 57 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
May 14, 2011, 3:43 PM EDT (19:43 UTC)
Expired
May 14, 2011, 4:40 PM EDT
In force
57 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon

County Martin County, FL

The radar

The Melbourne radar (KMLB), 118 km from the middle of the area, began a volume at 19:43 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

TimeReportWhereRemark
May 14, 4:25 PM EDTHAIL 0.5Hobe Sound, FLMARTIN COUNTY SHERIFF RELAYED REPORT OF HALF INCH SIZE HAIL

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, 7.7 hours before the alert went out and 144 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, Miami, FL at 12:00Z on 2011-05-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 674 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 12:00Z on 2011-05-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -17 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
674 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
1032 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-17 m²/s²
0-3 km storm-relative helicity
6 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.

173 
WUUS52 KMLB 141943
SVRMLB
FLC085-142045-
/O.NEW.KMLB.SV.W.0041.110514T1943Z-110514T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
343 PM EDT SAT MAY 14 2011

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

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

* UNTIL 445 PM EDT.

* AT 333 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   
INDIANTOWN...AND MOVING EAST-NORTHEAST AT 30 MPH.

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

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 2707 8056 2720 8019 2719 8019 2721 8017
      2717 8015 2717 8016 2718 8018 2716 8019
      2715 8015 2699 8008 2695 8025 2695 8052
TIME...MOT...LOC 1942Z 252DEG 25KT 2701 8043

$$



CRISTALDI
2 follow-up statements
488 
WWUS52 KMLB 142005
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
405 PM EDT SAT MAY 14 2011

FLC085-142045-
/O.CON.KMLB.SV.W.0041.000000T0000Z-110514T2045Z/
MARTIN-
405 PM EDT SAT MAY 14 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR SOUTHEASTERN MARTIN COUNTY...

AT 358 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO 
DETECT SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL SIZE 
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THE STORMS WERE 
LOCATED BETWEEN STUART AND HOBE SOUND AND ABOUT 8 MILES SOUTHWEST OF 
JUPITER ISLAND. THE STORMS WERE MOVING NORTHEAST AT 30 MPH.

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

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 2696 8052 2708 8052 2720 8019 2719 8019
      2721 8017 2717 8015 2717 8016 2718 8018
      2716 8019 2715 8015 2699 8008 2696 8022
TIME...MOT...LOC 2003Z 252DEG 25KT 2705 8027

$$
478 
WWUS52 KMLB 142040 RRA
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
440 PM EDT SAT MAY 14 2011

FLC085-142049-
/O.CAN.KMLB.SV.W.0041.000000T0000Z-110514T2045Z/
MARTIN-
440 PM EDT SAT MAY 14 2011

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MARTIN COUNTY IS
CANCELLED...
THE STRONGEST STORMS HAVE MOVED OUT OVER THE COASTAL WATERS. A 
SPECIAL MARINE WARNING REMAINS IN EFFECT FOR THE MARTIN COUNTY COAST
UNTIL 530 PM.
LAT...LON 2696 8052 2708 8052 2720 8019 2719 8019
      2721 8017 2717 8015 2717 8016 2718 8018
      2716 8019 2715 8015 2699 8008 2696 8022
TIME...MOT...LOC 2039Z 252DEG 25KT 2713 8000

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 13, 8:11 PM EDTSpecial Marine WarningMLB94 min
May 14, 12:57 PM EDTSpecial Weather StatementMLBOkeechobee63 min
May 14, 1:19 PM EDTSevere Thunderstorm WarningMLBOkeechobee, Osceola56 min
May 14, 2:03 PM EDTSpecial Weather StatementMLBBrevard, Indian River, Okeechobee, Osceola, Saint Lucie42 min
May 14, 2:09 PM EDTSpecial Marine WarningMLB111 min
May 14, 2:10 PM EDTSevere Thunderstorm WarningMLBBrevard, Osceola44 min
May 14, 2:17 PM EDTSevere Thunderstorm WarningMLBIndian River, Okeechobee, Saint Lucie40 min
May 14, 2:40 PM EDTSpecial Weather StatementMLBOrange, Seminole50 min
May 14, 2:52 PM EDTSevere Thunderstorm WarningMLBBrevard, Orange, Seminole, Volusia53 min
May 14, 3:04 PM EDTSevere Thunderstorm WarningMLBOrange, Osceola45 min
May 14, 3:17 PM EDTSpecial Marine WarningMLB118 min
May 14, 3:21 PM EDTSpecial Weather StatementMLBLake69 min
May 14, 3:26 PM EDTSpecial Weather StatementMLBMartin64 min
May 14, 3:45 PM EDTSevere Thunderstorm WarningMLBLake, Volusia60 min
May 14, 3:53 PM EDTSpecial Marine WarningMLB112 min
May 14, 3:58 PM EDTSpecial Marine WarningMLB92 min
May 14, 4:00 PM EDTSpecial Weather StatementMLBOrange, Seminole45 min
May 14, 4:23 PM EDTTornado WarningMLBMartin14 min
May 14, 4:44 PM EDTSpecial Weather StatementMLBOsceola46 min
May 14, 5:18 PM EDTSpecial Weather StatementMLBIndian River, Okeechobee, Saint Lucie72 min
May 14, 5:29 PM EDTSpecial Weather StatementMLBMartin46 min

Nearby

Severe Thunderstorm Warnings in Florida, 2011Every 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.