Alert archive / Florida / Tornado Warnings in 2011

Tornado Warning 31, NWS Melbourne, FL

October 29, 2011Martin County, Florida

NWS Melbourne, FL issued this tornado warning at Oct 29, 2011, 9:10 AM EDT for Martin County, Florida. It was in force for 19 min. 6 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: Oct 29, 2011, 9:10 AM EDT (13:10 UTC)
Expired: Oct 29, 2011, 9:29 AM EDT
In force: 19 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

County Martin County, FL

The radar

The Melbourne radar (KMLB), 119 km from the middle of the area, began a volume at 13:10 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
Oct 29, 9:10 AM EDT	TSTM WND DMG	3 Nnw Hobe Sound, FL	MARTIN COUNTY SHERIFF RELAYED REPORT OF CARPORTS TORN OFF, TREES DOWN AND OTHER PROPERTY DAMAGE IN VICINITY OF RIDGEWAY MOBILE HOME PARK. TIME ESTIMATED BASED ON RADAR. POSSIBLE TORNADO.
Oct 29, 9:10 AM EDT	TSTM WND DMG	3 Nnw Hobe Sound, FL	MARTIN COUNTY SHERIFF RELAYED REPORT OF HOME LOST ROOF ON AMENDMENT ST. TIME ESTIAMTED BASED ON RADAR. POSSIBLE TORNADO.
Oct 29, 9:10 AM EDT	TSTM WND DMG	3 Nnw Hobe Sound, FL	ROOFS BLOWN OFF CARPORTS ON OSPREY STREET EAST OF HIGHWAY US IN RIDGEWAY MOBILE HOME PARK. TIME ESTIMATED BASED ON RADAR. POSSIBLE TORNADO.
Oct 29, 9:10 AM EDT	TSTM WND DMG	4 Nnw Hobe Sound, FL	MARTIN COUNTY SHERIFF RELAYED REPORT OF AWNINGS ON RESIDENCE TORN OFF AND POWER POLES DOWN NEAR GOMEZ AVE AND LOBLOLLY BAY DRIVE. TIME ESTIMATED BASED ON RADAR. POSSIBLE TORNADO.
Oct 29, 9:18 AM EDT	TORNADO	3 Nnw Hobe Sound, FL	TORNADO. THIS TORNADO OCCURRED AS A SECOND TOUCHDOWN FROM THE HOBE SOUND TORNADO THAT DID DAMAGE TO SEVERAL MOBILE HOMES IN THE AREA. THIS TORNADO HAD A PATH LENGTH OF 0.39 MILES 40 YARDS WIDE RATING EF-0 WITH MAX WINDS 65 TO 75 MPH. WIND DAMGAGE TO NUMEROUS T
Oct 29, 9:22 AM EDT	TORNADO	3 Nnw Hobe Sound, FL	TORNADO. PATH LENGTH 0.1 MILES 25 YARDS WIDE RATING EF-0 WITH MAX WINDS 65 TO 70 MPH REMOVED A ROOF FROM MOBILE HOME AND BLEW IT 50 YARDS. SEVERAL HOMES IN THE AREA HAD MINOR DAMAGE. A LARGE PALM TREE WAS UPROOTED AND MANY SMALL TREES WERE DOWNED IN THE SAME L

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, 1.2 hours before the alert went out and 146 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: 1724 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 485 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 154 m²/s²
0-3 km storm-relative helicity: 237 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 7.8

Open this sounding in Storm Lab

The text

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

745 
WFUS52 KMLB 291310
TORMLB
FLC085-291345-
/O.NEW.KMLB.TO.W.0031.111029T1310Z-111029T1345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
910 AM EDT SAT OCT 29 2011

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL MARTIN COUNTY IN FLORIDA...

* UNTIL 945 AM EDT.

* AT 905 AM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED 
A   SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO JUST SOUTH OF 
PORT SALERNO...OR NEAR HOBE SOUND...MOVING NORTHEAST AT 20 TO 25 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ROCKY
  POINT...HOBE SOUND BEACH AND HOBE SOUND WILDLIFE REFUGE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER.

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 2704 8024 2710 8025 2720 8016 2719 8015
      2717 8015 2716 8015 2715 8014 2709 8012
TIME...MOT...LOC 1309Z 236DEG 23KT 2710 8019

$$

SEDLOCK

1 follow-up statement

791 
WWUS52 KMLB 291329
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
929 AM EDT SAT OCT 29 2011

FLC085-291338-
/O.CAN.KMLB.TO.W.0031.000000T0000Z-111029T1345Z/
MARTIN-
929 AM EDT SAT OCT 29 2011

...THE SECOND TORNADO WARNING FOR EAST CENTRAL MARTIN COUNTY IS 
CANCELLED...

THE SEVERE STORM THAT PROMPTED THE WARNING HAD EXITED THE WARNING 
AREA...THUS THE WARNING HAS BEEN CANCELLED.

LAT...LON 2704 8024 2710 8025 2720 8016 2719 8015
      2717 8015 2716 8015 2715 8014 2709 8012
TIME...MOT...LOC 1328Z 236DEG 23KT 2717 8008

$$

SEDLOCK

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 29, 8:12 AM EDT	Special Weather Statement	MLB	Martin	48 min
Oct 29, 8:29 AM EDT	Tornado Warning	MLB	Martin	61 min
Oct 29, 8:53 AM EDT	Special Marine Warning	MLB		82 min

Nearby

Tornado Warnings in Florida, 2011 Every tornado warning in 2011 Tornadoes 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.