Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 57, NWS Mobile, AL

May 13, 2011Butler County, Crenshaw County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at May 13, 2011, 2:24 PM CDT for Butler County, Crenshaw County, Alabama. It was in force for 51 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
May 13, 2011, 2:24 PM CDT (19:24 UTC)
Expired
May 13, 2011, 3:15 PM CDT
In force
51 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Butler County, AL, Crenshaw County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 7.4 hours before the alert went out and 174 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 2011-05-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 621 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, Birmingham, AL at 12:00Z on 2011-05-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
621 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
899 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
121 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.

264 
WUUS54 KMOB 131924
SVRMOB
ALC013-041-132015-
/O.NEW.KMOB.SV.W.0057.110513T1924Z-110513T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
224 PM CDT FRI MAY 13 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN BUTLER COUNTY IN SOUTH CENTRAL ALABAMA...
  WEST CENTRAL CRENSHAW COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 315 PM CDT

* AT 222 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 11
  MILES EAST OF GEORGIANA...OR 11 MILES NORTHEAST OF MCKENZIE...AND
  MOVING NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  RUTLEDGE AROUND 310 PM CDT...

&&

LAT...LON 3153 8654 3153 8659 3165 8670 3188 8642
      3169 8626
TIME...MOT...LOC 1924Z 231DEG 17KT 3164 8655

$$
2 follow-up statements
142 
WWUS54 KMOB 131948
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
248 PM CDT FRI MAY 13 2011

ALC013-131958-
/O.CAN.KMOB.SV.W.0057.000000T0000Z-110513T2015Z/
BUTLER AL-
248 PM CDT FRI MAY 13 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BUTLER COUNTY IS
CANCELLED...

LAT...LON 3169 8626 3155 8650 3166 8650 3167 8645
      3183 8645 3183 8644 3186 8645 3188 8642
TIME...MOT...LOC 1948Z 231DEG 17KT 3173 8637

$$

ALC041-132015-
/O.CON.KMOB.SV.W.0057.000000T0000Z-110513T2015Z/
CRENSHAW AL-
248 PM CDT FRI MAY 13 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT
FOR WEST CENTRAL CRENSHAW COUNTY...

AT 246 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR ROBINSON CROSSROADS...OR 7 MILES WEST OF LUVERNE...
MOVING NORTHEAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  RUTLEDGE...CENTENARY AND 6 MILES SOUTHEAST OF CENTER RIDGE BY 255
  PM CDT...
  8 MILES SOUTHEAST OF HONORAVILLE BY 300 PM CDT...

LAT...LON 3169 8626 3155 8650 3166 8650 3167 8645
      3183 8645 3183 8644 3186 8645 3188 8642
TIME...MOT...LOC 1948Z 231DEG 17KT 3173 8637

$$
572 
WWUS54 KMOB 132007
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
307 PM CDT FRI MAY 13 2011

ALC041-132017-
/O.EXP.KMOB.SV.W.0057.000000T0000Z-110513T2015Z/
CRENSHAW AL-
307 PM CDT FRI MAY 13 2011

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL CRENSHAW COUNTY
WILL EXPIRE AT 315 PM CDT...

LAT...LON 3169 8626 3155 8650 3166 8650 3167 8645
      3183 8645 3183 8644 3186 8645 3188 8642
TIME...MOT...LOC 2007Z 231DEG 17KT 3179 8629

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 13, 12:17 PM CDTSpecial Marine WarningMOB58 min
May 13, 1:09 PM CDTSpecial Marine WarningMOB66 min
May 13, 1:44 PM CDTSpecial Marine WarningMOB61 min
May 13, 3:16 PM CDTSevere Thunderstorm WarningMOBCovington16 min
May 13, 3:42 PM CDTSpecial Marine WarningMOB2 hr
May 13, 4:15 PM CDTSpecial Marine WarningMOB60 min
May 13, 5:17 PM CDTSpecial Marine WarningMOB28 min
May 13, 6:22 PM CDTMarine Weather StatementMOB115 min
May 13, 6:38 PM CDTSpecial Marine WarningMOB67 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2011Every severe thunderstorm warning 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.