Alert archive / Florida / Tornado Warnings in 2011

Tornado Warning 20, NWS Mobile, AL

March 9, 2011Okaloosa County, Santa Rosa County, Florida

NWS Mobile, AL issued this tornado warning at Mar 9, 2011, 10:30 AM CST for Okaloosa County, Santa Rosa County, Florida. It was in force for 32 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
Mar 9, 2011, 10:30 AM CST (16:30 UTC)
Expired
Mar 9, 2011, 11:02 AM CST
In force
32 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Okaloosa County, FL, Santa Rosa County, FL

The radar

The Eglin Afb radar (KEVX), 65 km from the middle of the area, began a volume at 16:31 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Mar 9, 7:26 AM CSTTornado WatchSPC6 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 4.5 hours before the alert went out and 221 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, Tallahassee Rgnl, FL at 12:00Z on 2011-03-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Tallahassee Rgnl, FL at 12:00Z on 2011-03-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 348 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
611 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
348 m²/s²
0-3 km storm-relative helicity
471 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.

486 
WFUS54 KMOB 091630
TORMOB
FLC091-113-091730-
/O.NEW.KMOB.TO.W.0020.110309T1630Z-110309T1730Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1030 AM CST WED MAR 9 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN OKALOOSA COUNTY IN NORTHWEST FLORIDA...
  THIS INCLUDES THE CITY OF CRESTVIEW...
  EAST CENTRAL SANTA ROSA COUNTY IN NORTHWEST FLORIDA...

* UNTIL 1130 AM CST

* AT 1026 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES EAST    
  OF MILTON...MOVING EAST  AT 30 MPH.

  A LAW ENFORCEMENT OFFICIAL HAS REPORTED SEEING A FUNNEL WITH THIS  
  STORM.

* THE TORNADO WILL BE NEAR...
  CRESTVIEW AROUND 1110 AM CST...

THIS INCLUDES INTERSTATE 10 BETWEEN MILE MARKERS 30 AND 67.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
QUARTER SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS UP TO 70 MPH.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST WEDNESDAY FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA.

&&

LAT...LON 3056 8639 3056 8697 3074 8700 3098 8653
      3098 8639 3064 8638
TIME...MOT...LOC 1629Z 251DEG 28KT 3067 8691

$$
2 follow-up statements
610 
WWUS54 KMOB 091644
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1044 AM CST WED MAR 9 2011

FLC091-113-091730-
/O.CON.KMOB.TO.W.0020.000000T0000Z-110309T1730Z/
OKALOOSA FL-SANTA ROSA FL-
1044 AM CST WED MAR 9 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1130 AM CST FOR EAST
CENTRAL SANTA ROSA AND OKALOOSA COUNTIES...

AT 1041 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
TORNADO WAS NEAR HOLT...OR ABOUT 14 MILES SOUTHWEST OF 
CRESTVIEW...MOVING EAST AT 35 TO 40 MPH.

THE TORNADO WILL BE NEAR...
  GALLIVER AROUND 1050 AM CST...
  MILLIGAN AROUND 1055 AM CST...
  CRESTVIEW AROUND 1100 AM CST...
  CRESTVIEW AIRPORT AROUND 1105 AM CST...
  DEERLAND AND KILLINGSWORTH CROSSROADS AROUND 1115 AM CST...  
  POND CREEK AROUND 1120 AM CST...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
QUARTER SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS UP TO 70 MPH.

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST WEDNESDAY FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA.

LAT...LON 3056 8639 3056 8686 3065 8681 3077 8686
      3098 8653 3098 8639 3064 8638
TIME...MOT...LOC 1644Z 261DEG 31KT 3066 8674

$$
281 
WWUS54 KMOB 091702
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1102 AM CST WED MAR 9 2011

FLC091-113-091712-
/O.CAN.KMOB.TO.W.0020.000000T0000Z-110309T1730Z/
OKALOOSA FL-SANTA ROSA FL-
1102 AM CST WED MAR 9 2011

...THE TORNADO WARNING FOR EAST CENTRAL SANTA ROSA AND OKALOOSA 
COUNTIES IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST WEDNESDAY FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA.

LAT...LON 3056 8639 3056 8686 3065 8681 3077 8686
      3098 8653 3098 8639 3064 8638
TIME...MOT...LOC 1702Z 180DEG 0KT 3066 8677

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 9, 9:02 AM CSTSevere Thunderstorm WarningMOBEscambia, Santa Rosa58 min
Mar 9, 9:10 AM CSTSevere Thunderstorm WarningMOBOkaloosa, Santa Rosa65 min
Mar 9, 9:10 AM CSTTornado WarningMOBEscambia50 min
Mar 9, 9:16 AM CSTTornado WarningMOBEscambia44 min
Mar 9, 9:25 AM CSTFlash Flood WarningMOBEscambia, Santa Rosa6 hr
Mar 9, 9:26 AM CSTTornado WarningMOBEscambia, Santa Rosa49 min
Mar 9, 9:40 AM CSTTornado WarningMOBEscambia, Santa Rosa50 min
Mar 9, 10:09 AM CSTSevere Thunderstorm WarningMOBEscambia, Okaloosa, Santa Rosa66 min
Mar 9, 10:17 AM CSTFlash Flood WarningMOBSanta Rosa6 hr
Mar 9, 11:03 AM CSTFlash Flood WarningMOBOkaloosa5 hr
Mar 9, 11:10 AM CSTSevere Thunderstorm WarningMOBOkaloosa65 min
Mar 9, 11:14 AM CSTTornado WarningMOBEscambia, Santa Rosa61 min
Mar 9, 11:41 AM CSTTornado WarningMOBOkaloosa26 min
Mar 9, 11:48 AM CSTFlash Flood WarningMOBOkaloosa, Santa Rosa4 hr
Mar 9, 12:16 PM CSTTornado WarningMOBOkaloosa, Santa Rosa26 min

Nearby

Tornado Warnings in Florida, 2011Every tornado warning in 2011Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.