Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 22, NWS Melbourne, FL

May 10, 2012Martin County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at May 10, 2012, 9:36 PM EDT for Martin County, Florida. It was in force for 54 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: May 10, 2012, 9:36 PM EDT (01:36 UTC)
Expired: May 10, 2012, 10:30 PM EDT
In force: 54 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

County Martin County, FL

The radar

The Melbourne radar (KMLB), 126 km from the middle of the area, began a volume at 01:40 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

Miami, FL (KMFL), launched 00:00Z, 1.6 hours before the alert went out and 137 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: 1569 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1127 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 63 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

106 
WUUS52 KMLB 110136
SVRMLB
FLC085-110230-
/O.NEW.KMLB.SV.W.0022.120511T0136Z-120511T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
936 PM EDT THU MAY 10 2012

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

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

* UNTIL 1030 PM EDT.

* AT 934 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED 
  A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE 
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
  LOCATED 10  MILES SOUTHWEST OF JOHNATHAN DICKINSON STATE PARK AND 
  MOVING NORTHEAST AT 15 MPH.

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

&&

LAT...LON 2699 8045 2721 8019 2722 8017 2719 8015
      2716 8015 2703 8009 2697 8007 2697 8014
      2695 8015 2695 8017 2695 8042
TIME...MOT...LOC 0135Z 233DEG 15KT 2694 8030

$$


52

3 follow-up statements

562 
WWUS52 KMLB 110150
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
950 PM EDT THU MAY 10 2012

FLC085-110230-
/O.CON.KMLB.SV.W.0022.000000T0000Z-120511T0230Z/
MARTIN-
950 PM EDT THU MAY 10 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT
FOR EASTERN MARTIN COUNTY...

AT 948 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 9 MILES WEST OF JONATHAN DICKINSON STATE PARK...OR 10 MILES
SOUTHWEST OF HOBE SOUND...MOVING NORTHEAST AT 20 MPH.

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

THIS STORMS WILL ALSO AFFECT INTERSTATE 95 BETWEEN MILE MARKERS 90 
AND 100 AND THE FLORIDA TURNPIKE BETWEEN MILE MARKERS 120 AND 130. 

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 2705 8038 2721 8019 2722 8017 2719 8015
      2716 8015 2703 8009 2697 8007 2697 8014
      2695 8015 2695 8034
TIME...MOT...LOC 0149Z 232DEG 16KT 2701 8027

$$


MOSES

639 
WWUS52 KMLB 110207
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
1007 PM EDT THU MAY 10 2012

FLC085-110230-
/O.CON.KMLB.SV.W.0022.000000T0000Z-120511T0230Z/
MARTIN-
1007 PM EDT THU MAY 10 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT
FOR EASTERN MARTIN COUNTY...

AT 1005 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS JUST 
WEST OF JOHNATHAN DICKINSON STATE PARK AND HOBE SOUND...MOVING EAST 
AT 20 MPH.

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

LAT...LON 2696 8024 2709 8029 2721 8019 2722 8017
      2719 8015 2716 8015 2703 8009 2697 8007
      2697 8014 2695 8015
TIME...MOT...LOC 0206Z 249DEG 16KT 2701 8015

$$



52

307 
WWUS52 KMLB 110226
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
1026 PM EDT THU MAY 10 2012

FLC085-110236-
/O.EXP.KMLB.SV.W.0022.000000T0000Z-120511T0230Z/
MARTIN-
1026 PM EDT THU MAY 10 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MARTIN COUNTY WILL
EXPIRE AT 1030 PM EDT...

THE SEVERE STORM THAT PROMPTED THE WARNING HAD WEAKENED AND EXITED
THE WARNING AREA...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 2696 8024 2709 8029 2721 8019 2722 8017
      2719 8015 2716 8015 2703 8009 2697 8007
      2697 8014 2695 8015
TIME...MOT...LOC 0222Z 249DEG 16KT 2704 8008

$$




52

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 9:11 PM EDT	Special Weather Statement	MLB	Martin	49 min
May 10, 9:49 PM EDT	Special Marine Warning	MLB		56 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.