Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 17, NWS Mobile, AL

March 9, 2011Covington County, Crenshaw County, Alabama

NWS Mobile, AL issued this tornado warning at Mar 9, 2011, 9:26 AM CST for Covington County, Crenshaw County, Alabama. It was in force for 26 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, 9:26 AM CST (15:26 UTC)
Expired
Mar 9, 2011, 9:52 AM CST
In force
26 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Covington County, AL, Crenshaw County, AL

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

Birmingham, AL (KBMX), launched 12:00Z, 3.4 hours before the alert went out and 187 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, Birmingham, AL 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, Birmingham, AL at 12:00Z on 2011-03-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 743 square meters per square second.1939587897Sfc1 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
467 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
743 m²/s²
0-3 km storm-relative helicity
1250 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.

402 
WFUS54 KMOB 091526 RRA
TORMOB
ALC039-041-091630-
/O.NEW.KMOB.TO.W.0017.110309T1526Z-110309T1630Z/

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

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN COVINGTON COUNTY IN SOUTH CENTRAL ALABAMA...
  SOUTHERN CRENSHAW COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 1030 AM CST

* AT 922 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 15 MILES SOUTH
  OF LUVERNE...OR NEAR DOZIER...MOVING EAST AT 25 MPH.

* THE TORNADO WILL BE NEAR...
  BRANTLEY AROUND 935 AM CST...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3153 8616 3153 8619 3144 8619 3146 8639
      3161 8640 3168 8615 3165 8615 3163 8617
      3162 8614 3155 8614
TIME...MOT...LOC 1526Z 263DEG 22KT 3151 8631

$$
1 follow-up statement
248 
WWUS54 KMOB 091552
SVSMOB

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

ALC039-041-091601-
/O.CAN.KMOB.TO.W.0017.000000T0000Z-110309T1630Z/
COVINGTON AL-CRENSHAW AL-
952 AM CST WED MAR 9 2011

...THE TORNADO WARNING FOR SOUTHERN CRENSHAW AND EXTREME NORTHEASTERN
COVINGTON COUNTIES IS CANCELLED...

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT THROUGH 1015 
AM...

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

LAT...LON 3153 8616 3153 8619 3144 8619 3146 8639
      3161 8640 3168 8615 3165 8615 3163 8617
      3162 8614 3155 8614
TIME...MOT...LOC 1551Z 263DEG 22KT 3153 8613

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 8, 7:11 PM CSTSevere Thunderstorm WarningMOBMobile, Washington34 min
Mar 8, 8:23 PM CSTSevere Thunderstorm WarningMOBWashington37 min
Mar 8, 9:04 PM CSTSevere Thunderstorm WarningMOBClarke, Washington41 min
Mar 8, 9:44 PM CSTSevere Thunderstorm WarningMOBClarke, Washington, Wilcox46 min
Mar 9, 1:32 AM CSTFlash Flood WarningMOBChoctaw118 min
Mar 9, 4:20 AM CSTFlash Flood WarningMOBChoctaw6 hr
Mar 9, 4:22 AM CSTSevere Thunderstorm WarningMOBChoctaw38 min
Mar 9, 4:32 AM CSTTornado WarningMOBChoctaw33 min
Mar 9, 5:07 AM CSTFlash Flood WarningMOBChoctaw6 hr
Mar 9, 5:40 AM CSTTornado WarningMOBChoctaw, Clarke33 min
Mar 9, 5:51 AM CSTFlash Flood WarningMOBClarke, Washington, Wilcox6 hr
Mar 9, 6:37 AM CSTTornado WarningMOBWashington17 min
Mar 9, 7:08 AM CSTSevere Thunderstorm WarningMOBBaldwin, Mobile, Washington52 min
Mar 9, 7:26 AM CSTFlash Flood WarningMOBBaldwin, Clarke, Mobile, Washington6 hr
Mar 9, 7:33 AM CSTFlash Flood WarningMOBMonroe6 hr
Mar 9, 7:52 AM CSTSevere Thunderstorm WarningMOBBaldwin, Mobile83 min
Mar 9, 7:54 AM CSTSpecial Marine WarningMOB81 min
Mar 9, 8:01 AM CSTTornado WarningMOBBaldwin, Mobile44 min
Mar 9, 8:14 AM CSTSevere Thunderstorm WarningMOBConecuh, Covington, Escambia61 min
Mar 9, 8:27 AM CSTTornado WarningMOBBaldwin, Mobile63 min
Mar 9, 8:35 AM CSTTornado WarningMOBConecuh, Covington, Escambia40 min
Mar 9, 8:41 AM CSTFlash Flood WarningMOBBaldwin, Mobile4 hr
Mar 9, 8:48 AM CSTFlash Flood WarningMOBConecuh, Escambia5 hr
Mar 9, 8:50 AM CSTSevere Thunderstorm WarningMOBButler, Conecuh, Covington, Crenshaw40 min
Mar 9, 9:02 AM CSTSevere Thunderstorm WarningMOBBaldwin, Escambia58 min
Mar 9, 9:10 AM CSTSevere Thunderstorm WarningMOBButler, Conecuh, Covington, Crenshaw, Escambia65 min
Mar 9, 9:10 AM CSTTornado WarningMOBBaldwin50 min
Mar 9, 9:16 AM CSTTornado WarningMOBBaldwin44 min
Mar 9, 9:16 AM CSTTornado WarningMOBCovington59 min
Mar 9, 9:19 AM CSTSpecial Marine WarningMOB116 min
Mar 9, 9:23 AM CSTSpecial Marine WarningMOB97 min
Mar 9, 9:25 AM CSTFlash Flood WarningMOBBaldwin6 hr
Mar 9, 9:26 AM CSTTornado WarningMOBBaldwin, Escambia49 min
Mar 9, 9:36 AM CSTFlash Flood WarningMOBConecuh, Covington, Escambia114 min
Mar 9, 9:40 AM CSTTornado WarningMOBBaldwin50 min
Mar 9, 9:44 AM CSTAreal Flood AdvisoryMOBButler, Conecuh, Covington, Crenshaw4 hr
Mar 9, 9:54 AM CSTTornado WarningMOBCovington25 min
Mar 9, 10:09 AM CSTSevere Thunderstorm WarningMOBCovington66 min
Mar 9, 10:22 AM CSTAreal Flood WarningMOBChoctaw5 hr
Mar 9, 10:55 AM CSTSpecial Marine WarningMOB80 min
Mar 9, 11:00 AM CSTAreal Flood WarningMOBChoctaw5 hr
Mar 9, 11:14 AM CSTTornado WarningMOBBaldwin61 min
Mar 9, 11:30 AM CSTRiver Flood WarningMOBClarke, Monroe, Wilcox10 days
Mar 9, 11:54 AM CSTAreal Flood AdvisoryMOBConecuh, Covington, Escambia111 min
Mar 9, 11:58 AM CSTSpecial Marine WarningMOB2 hr
Mar 9, 12:00 PM CSTAreal Flood WarningMOBClarke, Washington, Wilcox4 hr
Mar 9, 2:02 PM CSTSpecial Marine WarningMOB58 min

Nearby

Tornado Warnings in Alabama, 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.