Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 219, NWS Mobile, AL

December 10, 2012Butler County, Wilcox County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Dec 10, 2012, 12:32 PM CST for Butler County, Wilcox County, Alabama. It was in force for 29 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: Dec 10, 2012, 12:32 PM CST (18:32 UTC)
Expired: Dec 10, 2012, 1:01 PM CST
In force: 29 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Butler County, AL, Wilcox County, AL

The watch it was issued in

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

Issued	Product	Office	Lasted
Dec 10, 8:51 AM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 6.5 hours before the alert went out and 140 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 385 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 531 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 218 m²/s²
0-3 km storm-relative helicity: 254 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

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

763 
WUUS54 KMOB 101832
SVRMOB
ALC013-131-101930-
/O.NEW.KMOB.SV.W.0219.121210T1832Z-121210T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1232 PM CST MON DEC 10 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BUTLER COUNTY IN SOUTH CENTRAL ALABAMA...
  SOUTHEASTERN WILCOX COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 130 PM CST

* AT 1229 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING
  DAMAGING WINDS OVER 60 MPH WAS LOCATED 17 MILES NORTHWEST OF
  GREENVILLE...OR 9 MILES NORTHEAST OF PINE APPLE...AND MOVING EAST
  AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  I65 AND AL 185...     I65 AND AL 10...      GREENVILLE...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 128 AND 139.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 PM CST MONDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA.

&&

LAT...LON 3197 8685 3197 8650 3184 8648 3179 8691
      3183 8691 3183 8694 3204 8695 3205 8686
TIME...MOT...LOC 1832Z 262DEG 43KT 3196 8683

$$

1 follow-up statement

992 
WWUS54 KMOB 101901
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
101 PM CST MON DEC 10 2012

ALC013-131-101911-
/O.CAN.KMOB.SV.W.0219.000000T0000Z-121210T1930Z/
BUTLER AL-WILCOX AL-
101 PM CST MON DEC 10 2012

...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR
SOUTHEASTERN WILCOX AND NORTHERN BUTLER COUNTIES...

AT 1257 PM CST...THUNDERSTORMS THAT PROMPTED THE WARNING FOR 
SOUTHEASTERN WILCOX AND NORTHERN BUTLER COUNTIES HAVE WEAKENED TO 
BELOW SEVERE LIMITS...THUS THE SEVERE THUNDERSTORM WARNING HAS BEEN 
CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 PM CST MONDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA.

LAT...LON 3197 8685 3197 8650 3184 8648 3179 8691
      3183 8691 3183 8694 3204 8695 3205 8686
TIME...MOT...LOC 1901Z 262DEG 43KT 3201 8643

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 10, 3:51 AM CST	Small Craft Advisory	MOB		29 hr
Dec 10, 9:43 AM CST	Special Marine Warning	MOB		2 hr
Dec 10, 9:53 AM CST	Severe Thunderstorm Warning	MOB	Choctaw	52 min
Dec 10, 10:03 AM CST	Tornado Warning	MOB	Baldwin	42 min
Dec 10, 10:31 AM CST	Severe Thunderstorm Warning	MOB	Washington	49 min
Dec 10, 10:36 AM CST	Tornado Warning	MOB	Choctaw, Washington	40 min
Dec 10, 10:37 AM CST	Tornado Warning	MOB	Baldwin	38 min
Dec 10, 10:58 AM CST	Tornado Warning	MOB	Clarke	41 min
Dec 10, 11:32 AM CST	Severe Thunderstorm Warning	MOB	Mobile, Washington	42 min
Dec 10, 11:36 AM CST	Severe Thunderstorm Warning	MOB	Clarke, Monroe, Wilcox	54 min
Dec 10, 12:09 PM CST	Severe Thunderstorm Warning	MOB	Baldwin, Clarke, Monroe	47 min
Dec 10, 12:18 PM CST	Severe Thunderstorm Warning	MOB	Butler, Monroe, Wilcox	42 min
Dec 10, 12:30 PM CST	Severe Thunderstorm Warning	MOB	Clarke, Conecuh, Monroe	28 min
Dec 10, 12:37 PM CST	Special Marine Warning	MOB		92 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2012 Every 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.