Alert archive / Florida / Tornado Warnings in 2012

Tornado Warning 6, NWS Melbourne, FL

May 17, 2012Martin County, Florida

NWS Melbourne, FL issued this tornado warning at May 17, 2012, 2:34 AM EDT for Martin County, Florida. It was in force for 41 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 17, 2012, 2:34 AM EDT (06:34 UTC)
Expired: May 17, 2012, 3:15 AM EDT
In force: 41 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

County Martin County, FL

The radar

The Melbourne radar (KMLB), 115 km from the middle of the area, began a volume at 06:37 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, 6.6 hours before the alert went out and 149 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: 2239 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 704 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 106 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

055 
WFUS52 KMLB 170634
TORMLB
FLC085-170715-
/O.NEW.KMLB.TO.W.0006.120517T0634Z-120517T0715Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
234 AM EDT THU MAY 17 2012

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN MARTIN COUNTY IN FLORIDA...
  THIS INCLUDES THE CITIES OF...STUART...PALM CITY...JENSEN BEACH...
  HOBE SOUND...

* UNTIL 315 AM EDT.

* AT 233 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 8 MILES SOUTH OF
  PALM CITY...MOVING NORTHEAST AT 20 MPH AND APPROACHING THE TURNPIKE
  AND INTERSTATE 95 WEST OF HOBE SOUND.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A STRONG BUILDING ON
THE LOWEST FLOOR...IN AN INTERIOR ROOM SUCH AS A BATHROOM OR CLOSET.
KEEP AWAY FROM WINDOWS. GET UNDER A WORKBENCH OR OTHER PIECE OF
STURDY FURNITURE. USE BLANKETS OR PILLOWS TO COVER YOUR BODY.

EVACUATE MOBILE HOMES OR VEHICLES FOR MORE SUBSTANTIAL SHELTER.

&&

LAT...LON 2706 8037 2727 8023 2726 8022 2727 8020
      2724 8017 2721 8017 2721 8015 2716 8015
      2703 8009 2697 8029
TIME...MOT...LOC 0634Z 232DEG 16KT 2707 8028

$$


52

3 follow-up statements

030 
WWUS52 KMLB 170644
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
244 AM EDT THU MAY 17 2012

FLC085-170715-
/O.CON.KMLB.TO.W.0006.000000T0000Z-120517T0715Z/
MARTIN-
244 AM EDT THU MAY 17 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 AM EDT FOR EASTERN
MARTIN COUNTY...

AT 241 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR INTERSTATE 95 
WEST OF PORT SALERNO...MOVING NORTHEAST AT 30 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PORT 
SALERNO...HOBE SOUND...HOBE SOUND BEACH AND STUART. 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...
 
THE SAFEST PLACE TO BE DURING A TORNADO IS IN A STRONG BUILDING ON
THE LOWEST FLOOR...IN AN INTERIOR ROOM SUCH AS A BATHROOM OR CLOSET.
KEEP AWAY FROM WINDOWS. GET UNDER A WORKBENCH OR OTHER PIECE OF
STURDY FURNITURE. USE BLANKETS OR PILLOWS TO COVER YOUR BODY.

EVACUATE MOBILE HOMES OR VEHICLES FOR MORE SUBSTANTIAL SHELTER.

&&

LAT...LON 2702 8026 2709 8031 2727 8023 2726 8022
      2727 8020 2724 8017 2721 8017 2721 8015
      2716 8015 2703 8009
TIME...MOT...LOC 0638Z 241DEG 33KT 2708 8024

$$


52

342 
WWUS52 KMLB 170649
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
249 AM EDT THU MAY 17 2012

FLC085-170715-
/O.CON.KMLB.TO.W.0006.000000T0000Z-120517T0715Z/
MARTIN-
249 AM EDT THU MAY 17 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 AM EDT FOR EASTERN
MARTIN COUNTY...

AT 248 AM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A TORNADO.  THIS TORNADO WAS LOCATED NEAR PORT SALERNO...OR
NEAR HOBE SOUND...MOVING NORTHEAST AT 30 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SNUG 
HARBOR...SEWALL'S POINT AND JENSEN BEACH. PERSONS IN THESE AREAS 
SHOULD TAKE COVER IMMEDIATELY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A STRONG BUILDING ON
THE LOWEST FLOOR...IN AN INTERIOR ROOM SUCH AS A BATHROOM OR CLOSET.
KEEP AWAY FROM WINDOWS. GET UNDER A WORKBENCH OR OTHER PIECE OF
STURDY FURNITURE. USE BLANKETS OR PILLOWS TO COVER YOUR BODY.

EVACUATE MOBILE HOMES OR VEHICLES FOR MORE SUBSTANTIAL SHELTER.

&&

LAT...LON 2702 8026 2709 8031 2727 8023 2726 8022
      2727 8020 2724 8017 2721 8017 2721 8015
      2716 8015 2703 8009
TIME...MOT...LOC 0649Z 231DEG 28KT 2713 8017

$$


52

972 
WWUS52 KMLB 170715
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
315 AM EDT THU MAY 17 2012

FLC085-170725-
/O.EXP.KMLB.TO.W.0006.000000T0000Z-120517T0715Z/
MARTIN-
315 AM EDT THU MAY 17 2012

...THE TORNADO WARNING FOR EASTERN MARTIN COUNTY WILL EXPIRE AT 315
AM EDT...

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

LAT...LON 2702 8026 2709 8031 2727 8023 2726 8022
      2727 8020 2724 8017 2721 8017 2721 8015
      2716 8015 2703 8009
TIME...MOT...LOC 0707Z 231DEG 28KT 2722 8005

$$


52

The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 1:45 AM EDT	Tornado Warning	MLB	Martin, Saint Lucie	27 min
May 17, 2:47 AM EDT	Special Marine Warning	MLB		58 min
May 17, 4:27 PM EDT	Special Marine Warning	MLB		63 min
May 17, 4:27 PM EDT	Special Weather Statement	MLB	Indian River	48 min
May 17, 5:37 PM EDT	Special Weather Statement	MLB	Indian River	38 min
May 17, 5:53 PM EDT	Special Weather Statement	MLB	Seminole	52 min
May 17, 5:55 PM EDT	Special Weather Statement	MLB	Martin	50 min
May 17, 5:59 PM EDT	Special Weather Statement	MLB	Volusia	46 min
May 17, 6:14 PM EDT	Severe Thunderstorm Warning	MLB	Lake, Volusia	61 min
May 17, 6:27 PM EDT	Severe Thunderstorm Warning	MLB	Brevard	63 min
May 17, 6:30 PM EDT	Special Marine Warning	MLB		2 hr
May 17, 6:47 PM EDT	Special Weather Statement	MLB	Volusia	43 min
May 17, 6:53 PM EDT	Severe Thunderstorm Warning	MLB	Lake, Volusia	37 min
May 17, 7:14 PM EDT	Severe Thunderstorm Warning	MLB	Volusia	61 min
May 17, 7:32 PM EDT	Special Weather Statement	MLB	Brevard	43 min
May 17, 7:39 PM EDT	Severe Thunderstorm Warning	MLB	Brevard	51 min

Nearby

Tornado Warnings in Florida, 2012 Every tornado warning in 2012 Tornadoes 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.