Alert archive / Florida / Tornado Warnings in 2009

Tornado Warning 35, NWS Mobile, AL

April 13, 2009Okaloosa County, Santa Rosa County, Florida

NWS Mobile, AL issued this tornado warning at Apr 13, 2009, 10:26 AM CDT for Okaloosa County, Santa Rosa County, Florida. It was in force for 49 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
Apr 13, 2009, 10:26 AM CDT (15:26 UTC)
Expired
Apr 13, 2009, 11:15 AM CDT
In force
49 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), 61 km from the middle of the area, began a volume at 15:28 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
Apr 13, 9:12 AM CDTTornado WatchSPC9 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 3.4 hours before the alert went out and 215 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 2009-04-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 138 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 12:00Z on 2009-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 391 square meters per square second.19395878Sfc1 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
138 J/kg
Mixed-layer CIN
-213 J/kg
Mixed-layer LCL
619 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
391 m²/s²
0-3 km storm-relative helicity
472 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.0

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KMOB 131526
TORMOB
FLC091-113-131615-
/O.NEW.KMOB.TO.W.0035.090413T1526Z-090413T1615Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1026 AM CDT MON APR 13 2009

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN OKALOOSA COUNTY IN NORTHWEST FLORIDA...
  THIS INCLUDES THE CITIES OF...FORT WALTON BEACH...DESTIN...
  SOUTHEASTERN SANTA ROSA COUNTY IN NORTHWEST FLORIDA...

* UNTIL 1115 AM CDT

* AT 1020 AM CDT...THE PUBLIC REPORTED A LARGE WATERSPOUT OVER       
  SANTA ROSA SOUND NEAR NAVARRE...MOVING EAST.  DOPPLER WEATHER      
  RADAR INDICATED A CIRCULATION ABOUT 3 MILES EAST OF NAVARRE...     
  MOVING NORTHEAST AT 30 MPH.  THIS LARGE WATERSPOUT WILL MOVE ON    
  LAND SHORTLY AS A TORNADO.  

* THE TORNADO WILL BE NEAR...
  VALPARAISO BY 1105 AM CDT...

THE SAFEST PLACE TO BE DURING A TORNADO IS ON THE LOWEST FLOOR OF A
STURDY BUILDING...PREFERABLY IN AN INTERIOR HALLWAY OR A ROOM SUCH AS
A CLOSET OR BATHROOM. IF POSSIBLE...GET UNDER A WORKBENCH OR OTHER
PIECE OF STURDY FURNITURE. USE BLANKETS OR PILLOWS TO COVER YOUR BODY
AND ALWAYS STAY AWAY FROM WINDOWS. IN ADDITION TO THE TORNADO...THIS
STORM IS CAPABLE OF PRODUCING LARGE DAMAGING HAIL OR DAMAGING
STRAIGHT LINE WINDS.

IF YOU ARE IN MOBILE HOME...EVACUATE IT AND GET ON THE LOWEST FLOOR
OF A NEARBY STURDY BUILDING OR IN AN UNDERGROUND STORM SHELTER. IF NO
SUBSTANTIAL SHELTER IS AVAILABLE AND A TORNADO IS FAST APPROACHING...
SEEK SHELTER IN A CULVERT...DITCH OR LOW DEPRESSION AND COVER YOUR
HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT MONDAY AFTERNOON
FOR SOUTH CENTRAL ALABAMA AND NORTHWEST FLORIDA.

LAT...LON 3039 8684 3049 8682 3073 8639 3046 8639
      3046 8642 3049 8645 3043 8658 3041 8652
      3043 8646 3041 8639 3040 8639 3039 8649
      3040 8651 3039 8653 3040 8664
TIME...MOT...LOC 1525Z 244DEG 25KT 3042 8680

$$
2 follow-up statements
000 
WWUS54 KMOB 131608
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1108 AM CDT MON APR 13 2009

FLC113-131616-
/O.CAN.KMOB.TO.W.0035.000000T0000Z-090413T1615Z/
SANTA ROSA FL-
1108 AM CDT MON APR 13 2009

...THE TORNADO WARNING FOR SOUTHEASTERN SANTA ROSA COUNTY IS
CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT MONDAY AFTERNOON
FOR SOUTH CENTRAL ALABAMA AND NORTHWEST FLORIDA.

LAT...LON 3040 8664 3048 8661 3056 8639 3046 8639
      3046 8642 3049 8645 3043 8658 3041 8652
      3043 8646 3041 8639 3040 8639 3039 8649
      3040 8651 3039 8653
TIME...MOT...LOC 1606Z 244DEG 25KT 3055 8650

$$

FLC091-131615-
/O.CON.KMOB.TO.W.0035.000000T0000Z-090413T1615Z/
OKALOOSA FL-
1108 AM CDT MON APR 13 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1115 AM CDT FOR
SOUTHEASTERN OKALOOSA COUNTY...

AT 1104 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE SEVERAL CLUSTERS OF SEVERE THUNDERSTORMS CAPABLE OF 
PRODUCING A TORNADO.  THESE STORMS WILL AFFECT THE SOUTHEASTERN 
SECTIONS OF OKALOOSA COUNTY AROUND FORT WALTON...DESTIN AND 
NICEVILLE THROUGH 1115 AM.  THE STORMS ARE MOVING TO THE NORTHEAST 
AT 35 MPH.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT MONDAY AFTERNOON 
FOR SOUTH CENTRAL ALABAMA AND NORTHWEST FLORIDA.

LAT...LON 3040 8664 3048 8661 3056 8639 3046 8639
      3046 8642 3049 8645 3043 8658 3041 8652
      3043 8646 3041 8639 3040 8639 3039 8649
      3040 8651 3039 8653
TIME...MOT...LOC 1606Z 244DEG 25KT 3055 8650

$$
000 
WWUS54 KMOB 131621
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1121 AM CDT MON APR 13 2009

FLC091-131631-
/O.EXP.KMOB.TO.W.0035.000000T0000Z-090413T1615Z/
OKALOOSA FL-
1121 AM CDT MON APR 13 2009

...THE TORNADO WARNING FOR SOUTHEASTERN OKALOOSA COUNTY WAS ALLOWED 
TO EXPIRE AT 1115 AM CDT...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT MONDAY AFTERNOON 
FOR SOUTH CENTRAL ALABAMA AND NORTHWEST FLORIDA.

LAT...LON 3040 8664 3048 8661 3056 8639 3046 8639
      3046 8642 3049 8645 3043 8658 3041 8652
      3043 8646 3041 8639 3040 8639 3039 8649
      3040 8651 3039 8653
TIME...MOT...LOC 1608Z 244DEG 25KT 3056 8649

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 13, 4:36 AM CDTSevere Thunderstorm WarningMOBEscambia39 min
Apr 13, 6:56 AM CDTSevere Thunderstorm WarningMOBOkaloosa24 min
Apr 13, 7:12 AM CDTFlash Flood WarningMOBEscambia, Okaloosa, Santa Rosa3 hr
Apr 13, 7:33 AM CDTSevere Thunderstorm WarningMOBEscambia, Santa Rosa42 min
Apr 13, 7:45 AM CDTFire Weather WatchMOB8 hr
Apr 13, 8:35 AM CDTSevere Thunderstorm WarningMOBEscambia, Santa Rosa40 min
Apr 13, 9:10 AM CDTSevere Thunderstorm WarningMOBOkaloosa50 min
Apr 13, 9:20 AM CDTFlash Flood WarningMOBEscambia, Okaloosa, Santa Rosa115 min
Apr 13, 9:53 AM CDTRiver Flood WarningMOBEscambia5 days
Apr 13, 10:16 AM CDTSevere Thunderstorm WarningMOBEscambia, Okaloosa, Santa Rosa59 min
Apr 13, 11:17 AM CDTSevere Thunderstorm WarningMOBOkaloosa19 min
Apr 13, 2:03 PM CDTRiver Flood WarningMOBOkaloosa, Santa Rosa50 hr
Apr 13, 2:03 PM CDTRiver Flood WarningMOBOkaloosa41 hr

Nearby

Tornado Warnings in Florida, 2009Every tornado warning in 2009Tornadoes in 2009

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.