Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 26, NWS Mobile, AL

March 1, 2012Butler County, Conecuh County, Monroe County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Mar 1, 2012, 11:38 AM CST for Butler County, Conecuh County, Monroe County, Alabama. It was in force for 22 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 1, 2012, 11:38 AM CST (17:38 UTC)
Expired
Mar 1, 2012, 12:00 PM CST
In force
22 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Butler County, AL, Conecuh County, AL, Monroe County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 5.6 hours before the alert went out and 183 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 2012-03-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 85 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 2012-03-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 square meters per square second.1939587897117Sfc1 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
85 J/kg
Mixed-layer CIN
-92 J/kg
Mixed-layer LCL
651 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
88 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.

849 
WUUS54 KMOB 011738
SVRMOB
ALC013-035-099-011800-
/O.NEW.KMOB.SV.W.0026.120301T1738Z-120301T1800Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1138 AM CST THU MAR 1 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN BUTLER COUNTY IN SOUTH CENTRAL ALABAMA...
  CONECUH COUNTY IN SOUTH CENTRAL ALABAMA...
  CENTRAL MONROE COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL NOON CST

* AT 1135 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS TO NEAR 60 
  MPH. THIS STORM WAS LOCATED 4 MILES SOUTHEAST OF
  MONROEVILLE...OR 5 MILES NORTHEAST OF EXCEL...AND MOVING EAST      
  AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  I65 AND CR 7...       I65 AND AL 106...     PETERMAN...
  MONROEVILLE...        MEGARGEL...           FRISCO CITY...
  EXCEL...              REPTON...             LYEFFION...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 84 AND 114.

&&

LAT...LON 3173 8676 3128 8680 3138 8745 3160 8736
TIME...MOT...LOC 1736Z 274DEG 45KT 3147 8724

$$
3 follow-up statements
063 
WWUS54 KMOB 011749
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1149 AM CST THU MAR 1 2012

ALC013-035-099-011800-
/O.CON.KMOB.SV.W.0026.000000T0000Z-120301T1800Z/
BUTLER AL-CONECUH AL-MONROE AL-
1149 AM CST THU MAR 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL NOON CST FOR
CENTRAL MONROE...CONECUH AND SOUTHWESTERN BUTLER COUNTIES...

AT 1144 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER 
SIZE HAIL...AND DAMAGING WINDS TO NEAR 60 MPH.  THESE STORMS WERE 
LOCATED ALONG A LINE EXTENDING FROM I65 AND CR 29 TO I65 AND AL 83 
TO BELLEVILLE...OR ALONG A LINE EXTENDING FROM 8 MILES NORTH OF 
EVERGREEN TO EVERGREEN TO 12 MILES WEST OF EVERGREEN...MOVING EAST AT
85 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO OLD
SPARTA...STARLINGTON...GARLAND...RABB...NYMPH...ODOM CROSSROADS...
SALTER...TRAVIS BRIDGE...I65 AND AL 106...OLD TOWN...CENTERVILLE AND
JOHNSONVILLE

LAT...LON 3135 8716 3140 8731 3159 8719 3173 8676
      3128 8680
TIME...MOT...LOC 1749Z 271DEG 72KT 3152 8683 3146 8685
          3142 8701

$$
687 
WWUS54 KMOB 011753
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1153 AM CST THU MAR 1 2012

ALC099-011803-
/O.CAN.KMOB.SV.W.0026.000000T0000Z-120301T1800Z/
MONROE AL-
1153 AM CST THU MAR 1 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MONROE COUNTY IS
CANCELLED...

LAT...LON 3135 8716 3141 8723 3158 8713 3173 8676
      3128 8680
TIME...MOT...LOC 1753Z 271DEG 72KT 3152 8674 3146 8676
          3142 8692

$$

ALC013-035-011800-
/O.CON.KMOB.SV.W.0026.000000T0000Z-120301T1800Z/
BUTLER AL-CONECUH AL-
1153 AM CST THU MAR 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL NOON CST FOR
CENTRAL CONECUH AND SOUTHWESTERN BUTLER COUNTIES...

AT 1148 AM CST...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 
MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 8 
MILES NORTHEAST OF EVERGREEN TO EVERGREEN TO 7 MILES WEST OF 
EVERGREEN...MOVING EAST AT 35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO OLD
TOWN...CENTERVILLE AND JOHNSONVILLE

LAT...LON 3135 8716 3141 8723 3158 8713 3173 8676
      3128 8680
TIME...MOT...LOC 1753Z 271DEG 72KT 3152 8674 3146 8676
          3142 8692

$$
770 
WWUS54 KMOB 011801
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1201 PM CST THU MAR 1 2012

ALC013-035-011811-
/O.EXP.KMOB.SV.W.0026.000000T0000Z-120301T1800Z/
BUTLER AL-CONECUH AL-
1201 PM CST THU MAR 1 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CONECUH AND
SOUTHWESTERN BUTLER COUNTIES HAS EXPIRED...

LAT...LON 3135 8716 3141 8723 3158 8713 3173 8676
      3128 8680
TIME...MOT...LOC 1753Z 271DEG 72KT 3152 8674 3146 8676
          3142 8692

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 1, 9:08 AM CSTAreal Flood AdvisoryMOBBaldwin, Clarke, Monroe, Washington112 min
Mar 1, 9:51 AM CSTSevere Thunderstorm WarningMOBConecuh, Escambia54 min
Mar 1, 11:56 AM CSTSevere Thunderstorm WarningMOBCovington19 min
Mar 1, 3:50 PM CSTDense Fog AdvisoryMOB15 hr
Mar 1, 3:55 PM CSTMarine Dense Fog AdvisoryMOB20 hr

Nearby

Severe Thunderstorm Warnings in Alabama, 2012Every severe thunderstorm warning in 2012

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.