Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 62, NWS Mobile, AL

April 15, 2011Choctaw County, Alabama

NWS Mobile, AL issued this tornado warning at Apr 15, 2011, 6:34 PM CDT for Choctaw County, Alabama. It was in force for 41 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 15, 2011, 6:34 PM CDT (23:34 UTC)
Expired
Apr 15, 2011, 7:15 PM CDT
In force
41 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

County Choctaw County, AL

The radar

The Mobile radar (KMOB), 153 km from the middle of the area, began a volume at 23:35 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 15, 11:21 AM CDTTornado WatchSPC9 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 11.6 hours before the alert went out and 177 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 2011-04-15Temperature 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 2011-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 282 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1553 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
282 m²/s²
0-3 km storm-relative helicity
365 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

318 
WFUS54 KMOB 152334
TORMOB
ALC023-160015-
/O.NEW.KMOB.TO.W.0062.110415T2334Z-110416T0015Z/

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

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL CHOCTAW COUNTY IN SOUTHWEST ALABAMA...
  THIS INCLUDES THE CITY OF BUTLER...

* UNTIL 715 PM CDT

* AT 630 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES
  SOUTHEAST OF QUITMAN...OR 14 MILES SOUTHEAST OF STONEWALL...MOVING 
  EAST AT 45 MPH. THIS IS A SECOND THUNDERSTORM AND NO THE ONE THAT  
  RECENTLY PRODUCED A TORNADO IN RED SPRINGS.

* THE TORNADO WILL BE NEAR...
  NEEDHAM AROUND 650 PM CDT...
  BUTLER AND LISMAN AROUND 700 PM CDT...
  MT STERLING AND MOUNT STERLING AROUND 705 PM CDT...
  PENNINGTON AND DEAS AROUND 715 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE A RESPONDER TO THE RED SPRINGS TORNADO PLEASE BE AWARE A 
SECOND POTENTIAL TORNADO PRODUCING THUNDERSTORM IS APPROACHING.

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
BASEBALL SIZED HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

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.

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

&&

LAT...LON 3216 8800 3214 8804 3209 8804 3206 8811
      3201 8811 3202 8808 3199 8806 3196 8807
      3197 8810 3195 8812 3193 8805 3191 8847
      3219 8845 3229 8802
TIME...MOT...LOC 2331Z 254DEG 41KT 3200 8861

$$
5 follow-up statements
364 
WWUS54 KMOB 152341
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
641 PM CDT FRI APR 15 2011

ALC023-160015-
/O.CON.KMOB.TO.W.0062.000000T0000Z-110416T0015Z/
CHOCTAW AL-
641 PM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR CHOCTAW 
COUNTY...

AT 635 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A SEVERE THUNDERSTORM THAT WAS PRODUCING A TORNADO.  THIS 
TORNADO WAS NEAR LAVACA...OR ABOUT 9 MILES EAST OF BUTLER...MOVING 
EAST AT 50 MPH. THIS IS THE SAME THUNDERSTORM THAT PRODUCED THE 
CONFIRMED TORNADO NEAR RED SPRINGS. IT HAS SINCE MOVED EAST OF THE 
COUNTY.  A TORNADO WARNING REMAINS IN EFFECT BECAUSE A SECOND 
TORNADO PRODUCING THUNDERSTORM IS APPROACHING.

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

LAT...LON 3216 8800 3214 8804 3209 8804 3206 8811
      3201 8811 3202 8808 3199 8806 3196 8807
      3197 8810 3195 8812 3193 8805 3191 8847
      3219 8845 3229 8802
TIME...MOT...LOC 2340Z 258DEG 37KT 3211 8800

$$
675 
WWUS54 KMOB 152352
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
652 PM CDT FRI APR 15 2011

ALC023-160015-
/O.CON.KMOB.TO.W.0062.000000T0000Z-110416T0015Z/
CHOCTAW AL-
652 PM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR NORTHERN
CHOCTAW COUNTY...

AT 649 PM CDT.... THIS TORNADO WAS NEAR WEST BUTLER...OR ABOUT 7
MILES WEST OF BUTLER...MOVING EAST AT 45 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO RED
SPRINGS...LISMAN...GREEN ACRES...ARARAT...LITTLE WALKER...MT
STERLING...MOUNT STERLING...JACHIN...SLATER...ROBJOHN...LAVACA...
CHOCTAW CITY...DEAS...INDIAN SPRINGS...PENNINGTON...TOMPKINSVILLE AND
NAHEOLA.

THIS THUNDERSTORM WILL PASS VERY CLOSE TO RED SPRINGS WHICH 
EXPERIENCED A TORNADO FROM THE PRECEDING THUNDERSTORM.

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

LAT...LON 3229 8802 3216 8800 3214 8804 3209 8804
      3206 8811 3201 8810 3202 8809 3198 8807
      3197 8814 3199 8844 3218 8840
TIME...MOT...LOC 2351Z 257DEG 39KT 3206 8831

$$
524 
WWUS54 KMOB 160001
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
701 PM CDT FRI APR 15 2011

ALC023-160015-
/O.CON.KMOB.TO.W.0062.000000T0000Z-110416T0015Z/
CHOCTAW AL-
701 PM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR EASTERN 
CHOCTAW COUNTY...

AT 658 PM CDT.... THIS TORNADO WAS NEAR BUTLER...MOVING EAST AT 50 
MPH. THIS THUNDERSTORM WAS ALSO PRODUCING VERY LARGE HAIL.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LITTLE
WALKER...MT STERLING...MOUNT STERLING...JACHIN...ROBJOHN...CHOCTAW
CITY...LAVACA...DEAS...INDIAN SPRINGS...PENNINGTON...NAHEOLA AND
TOMPKINSVILLE

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

LAT...LON 3206 8811 3203 8816 3202 8825 3208 8833
      3219 8830 3229 8802 3216 8800 3214 8804
      3209 8804
TIME...MOT...LOC 0001Z 260DEG 44KT 3209 8818

$$
249 
WWUS54 KMOB 160007
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
707 PM CDT FRI APR 15 2011

ALC023-160015-
/O.CON.KMOB.TO.W.0062.000000T0000Z-110416T0015Z/
CHOCTAW AL-
707 PM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR
NORTHEASTERN CHOCTAW COUNTY...

AT 702 PM CDT.... THIS TORNADO WAS NEAR MOUNT STERLING...OR ABOUT
NEAR BUTLER...MOVING EAST AT 50 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
LAVACA...CHOCTAW CITY...DEAS...PENNINGTON...NAHEOLA AND TOMPKINSVILLE

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

LAT...LON 3206 8811 3205 8821 3210 8828 3217 8823
      3229 8803 3229 8802 3216 8800 3214 8804
      3209 8804
TIME...MOT...LOC 0007Z 257DEG 43KT 3211 8810

$$
230 
WWUS54 KMOB 160013
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
713 PM CDT FRI APR 15 2011

ALC023-160023-
/O.EXP.KMOB.TO.W.0062.000000T0000Z-110416T0015Z/
CHOCTAW AL-
713 PM CDT FRI APR 15 2011

...THE TORNADO WARNING FOR NORTHEASTERN CHOCTAW COUNTY WILL EXPIRE AT
715 PM CDT...

THERE WAS A FUNNEL CLOUD JUST REPORTED WITH THIS STORM NEAR MILLNER 
ALABAMA BY A TRAINED SPOTTER.

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

LAT...LON 3206 8811 3205 8821 3210 8828 3217 8823
      3229 8803 3229 8802 3216 8800 3214 8804
      3209 8804
TIME...MOT...LOC 0013Z 257DEG 43KT 3213 8802

$$

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, 10:56 AM CDTTornado WarningMOBChoctaw49 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, 6:44 PM CDTTornado WarningMOBChoctaw, Clarke, Washington61 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; radar from the NEXRAD Level II archive.