Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 34, NWS Mobile, AL

April 15, 2011Choctaw County, Alabama; Wayne County, Mississippi

NWS Mobile, AL issued this tornado warning at Apr 15, 2011, 10:56 AM CDT for Choctaw County, Alabama; Wayne County, Mississippi. It was in force for 49 min. 2 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
Apr 15, 2011, 10:56 AM CDT (15:56 UTC)
Expired
Apr 15, 2011, 11:45 AM CDT
In force
49 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Choctaw County, AL, Wayne County, MS

The radar

The Mobile radar (KMOB), 147 km from the middle of the area, began a volume at 15:56 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

TimeReportWhereRemark
Apr 15, 11:14 AM CDTTORNADO2 Ese Melvin, ALTORNADO DAMAGE REPORTED TO HUNT OIL REFINERY BUILDINGS IN MELVIN. LARGE LIMBS DOWN. SEVERAL TREES REPORTED DOWN.
Apr 15, 11:50 AM CDTTORNADO5 Sw Butler, ALTORNADO REPORTED IN RED SPRINGS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 15, 7:32 AM CDTTornado WatchSPC7 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 3.9 hours before the alert went out and 157 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, Jackson, MS at 12:00Z on 2011-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1458 joules per kilogram.LCLEL10008507005003002001001 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, Jackson, MS at 12:00Z on 2011-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 382 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
1458 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
523 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
382 m²/s²
0-3 km storm-relative helicity
565 m²/s²
Significant tornado parameter
4.0
Supercell composite
14.6

Open this sounding in Storm Lab

The text

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

148 
WFUS54 KMOB 151556
TORMOB
ALC023-MSC153-151645-
/O.NEW.KMOB.TO.W.0034.110415T1556Z-110415T1645Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1056 AM CDT FRI APR 15 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN WAYNE COUNTY IN SOUTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITY OF WAYNESBORO...
  CHOCTAW COUNTY IN SOUTHWEST ALABAMA...
  THIS INCLUDES THE CITY OF BUTLER...

* UNTIL 1145 AM CDT

* AT 1051 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES
  NORTHWEST OF WAYNESBORO...OR 14 MILES NORTHWEST OF ROBINSON
  JUNCTION...MOVING NORTHEAST AT 35 MPH.

* THE TORNADO WILL BE NEAR...
  TOXEY AND GILBERTOWN AROUND 1130 AM CDT...
  NEEDHAM...WIMBLY AND CHAPPELL HILL AROUND 1135 AM CDT...
  BUTLER AND MT STERLING AROUND 1145 AM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
GOLF BALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

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 300 PM CDT FRIDAY AFTERNOON
FOR SOUTHWEST ALABAMA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3223 8807 3187 8818 3164 8868 3182 8883
      3184 8881 3185 8863 3189 8848 3223 8844
      3230 8838
TIME...MOT...LOC 1556Z 233DEG 32KT 3177 8864

$$
2 follow-up statements
575 
WWUS54 KMOB 151618 RRA
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1118 AM CDT FRI APR 15 2011

ALC023-MSC153-151645-
/O.CON.KMOB.TO.W.0034.000000T0000Z-110415T1645Z/
CHOCTAW AL-WAYNE MS-
1118 AM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1145 AM CDT FOR
NORTHEASTERN WAYNE AND CHOCTAW COUNTIES...

AT 1110 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT ON RADAR A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.
PREVIOUS REPORTS HAVE ALREADY CONFIRMED THAT THIS STORM HAS PRODUCED 
A TORNADO NORTH OF STRENGTHFORD. THIS STORM WAS 6 MILES EAST OF 
HIWANNEE...OR ABOUT 11 MILES NORTH OF WAYNESBORO...MOVING NORTHEAST 
AT 30 MPH.

THE TORNADO WILL BE NEAR...
  EVANSBORO AROUND 1125 AM CDT...
  MELVIN...WATER VALLEY AND PARAGON AROUND 1130 AM CDT...
  OKATUPPA AND EILER AROUND 1135 AM CDT...
  TURNER AND TOXEY AROUND 1140 AM CDT...
  NEEDHAM AND BOGUELOOSA AROUND 1145 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 PM CDT FRIDAY AFTERNOON
FOR SOUTHWEST ALABAMA AND SOUTHEAST MISSISSIPPI.

LAT...LON 3223 8807 3187 8818 3164 8868 3182 8883
      3184 8881 3185 8863 3189 8848 3223 8844
      3230 8838
TIME...MOT...LOC 1614Z 233DEG 27KT 3185 8855

$$
038 
WWUS54 KMOB 151625
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1125 AM CDT FRI APR 15 2011

ALC023-MSC153-151645-
/O.CON.KMOB.TO.W.0034.000000T0000Z-110415T1645Z/
CHOCTAW AL-WAYNE MS-
1125 AM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1145 AM CDT FOR
NORTHEASTERN WAYNE AND CHOCTAW COUNTIES...

AT 1119 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS RECEIVED A 
CONFIRMED REPORT OF TORNADO DAMAGE AT THE HUNT OIL REFINERY 2 MILES 
EAST SOUTHEAST OF MELVIN IN CHOCTAW COUNTY.  THE STORM THAT PRODUCED 
THIS TORNADO CONTINUES TO MOVE TO THE NORTHEAST AT 40 MPH. 

THE TORNADO WILL BE NEAR...
  OKATUPPA AND EILER AROUND 1130 AM CDT...
  BOGUELOOSA...NEEDHAM...JACKSON SPUR AND TURNER AROUND 1135 AM
  CDT...
  RED SPRINGS...LAND AND WEST BUTLER AROUND 1140 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY EVENING FOR
SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.

LAT...LON 3223 8807 3187 8818 3164 8868 3182 8883
      3184 8881 3185 8863 3189 8848 3223 8844
      3230 8838
TIME...MOT...LOC 1622Z 233DEG 37KT 3190 8846

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 14, 10:41 PM CDTSmall Craft AdvisoryMOB44 hr
Apr 15, 10:20 AM CDTTornado WarningMOBWashington40 min
Apr 15, 10:50 AM CDTTornado WarningMOBClarke, Washington40 min
Apr 15, 11:09 AM CDTTornado WarningMOBWashington51 min
Apr 15, 11:26 AM CDTTornado WarningMOBClarke, Monroe49 min
Apr 15, 11:41 AM CDTTornado WarningMOBChoctaw64 min
Apr 15, 11:52 AM CDTTornado WarningMOBChoctaw, Clarke, Washington38 min
Apr 15, 12:07 PM CDTTornado WarningMOBMonroe38 min
Apr 15, 12:20 PM CDTTornado WarningMOBChoctaw, Clarke, Washington40 min
Apr 15, 12:35 PM CDTTornado WarningMOBMonroe, Wilcox24 min
Apr 15, 12:44 PM CDTTornado WarningMOBWashington46 min
Apr 15, 12:51 PM CDTTornado WarningMOBClarke, Wilcox33 min
Apr 15, 1:09 PM CDTTornado WarningMOBWashington51 min
Apr 15, 1:22 PM CDTTornado WarningMOBClarke, Washington21 min
Apr 15, 1:46 PM CDTTornado WarningMOBClarke, Washington44 min
Apr 15, 2:06 PM CDTSevere Thunderstorm WarningMOBChoctaw27 min
Apr 15, 2:22 PM CDTTornado WarningMOBClarke, Monroe, Wilcox38 min
Apr 15, 2:55 PM CDTTornado WarningMOBMonroe, Wilcox50 min
Apr 15, 3:18 PM CDTTornado WarningMOBButler, Conecuh, Monroe, Wilcox57 min
Apr 15, 3:41 PM CDTTornado WarningMOBClarke, Washington32 min
Apr 15, 4:02 PM CDTTornado WarningMOBChoctaw58 min
Apr 15, 4:27 PM CDTTornado WarningMOBClarke, Monroe48 min
Apr 15, 4:57 PM CDTTornado WarningMOBChoctaw42 min
Apr 15, 5:09 PM CDTTornado WarningMOBButler, Conecuh, Monroe, Wilcox51 min
Apr 15, 5:44 PM CDTTornado WarningMOBMonroe, Wilcox31 min
Apr 15, 5:47 PM CDTTornado Warning EmergencyMOBChoctaw58 min
Apr 15, 5:54 PM CDTTornado WarningMOBWilcox51 min
Apr 15, 5:59 PM CDTTornado WarningMOBButler26 min
Apr 15, 6:23 PM CDTTornado WarningMOBWilcox32 min
Apr 15, 6:34 PM CDTTornado WarningMOBChoctaw41 min
Apr 15, 6:44 PM CDTTornado WarningMOBChoctaw, Clarke, Washington61 min
Apr 15, 10:15 AM CDTTornado WarningMOBWayne45 min
Apr 15, 10:34 AM CDTTornado WarningMOBGreene, Perry41 min
Apr 15, 11:35 AM CDTTornado WarningMOBWayne40 min
Apr 15, 2:06 PM CDTSevere Thunderstorm WarningMOBGeorge, Greene39 min
Apr 15, 5:59 PM CDTTornado WarningMOBWayne61 min
Apr 15, 6:38 PM CDTTornado WarningMOBGreene, Perry37 min
Apr 15, 6:49 PM CDTTornado WarningMOBGreene, Perry41 min

Nearby

Tornado Warnings in Alabama, 2011Tornado Warnings in Mississippi, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.