Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 235, NWS Mobile, AL

December 25, 2012Conecuh County, Escambia County, Monroe County, Alabama; Escambia County, Santa Rosa County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at Dec 25, 2012, 8:44 PM CST for Conecuh County, Escambia County, Monroe County, Alabama; Escambia County, Santa Rosa County, Florida. It was in force for 46 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 25, 2012, 8:44 PM CST (02:44 UTC)
Expired: Dec 25, 2012, 9:30 PM CST
In force: 46 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Conecuh County, AL, Escambia County, AL, Monroe County, AL, Escambia County, FL, Santa Rosa County, FL

The radar

The Mobile radar (KMOB), 114 km from the middle of the area, began a volume at 02:46 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.

Issued	Product	Office	Lasted
Dec 25, 12:58 PM CST	Tornado Watch PDS	SPC	9 hr
Dec 25, 2:41 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 2.7 hours before the alert went out and 233 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: 22 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 563 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 696 m²/s²
0-3 km storm-relative helicity: 921 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

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

321 
WUUS54 KMOB 260244
SVRMOB
ALC035-053-099-FLC033-113-260330-
/O.NEW.KMOB.SV.W.0235.121226T0244Z-121226T0330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
844 PM CST TUE DEC 25 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN ESCAMBIA COUNTY IN NORTHWEST FLORIDA...
  NORTHWESTERN SANTA ROSA COUNTY IN NORTHWEST FLORIDA...
  SOUTHERN CONECUH COUNTY IN SOUTH CENTRAL ALABAMA...
  ESCAMBIA COUNTY IN SOUTH CENTRAL ALABAMA...
  SOUTH CENTRAL MONROE COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 930 PM CST

* AT 841 PM CST...A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
  QUARTER SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WERE LOCATED ALONG
  A LINE EXTENDING FROM 8 MILES SOUTH OF FRISCO CITY TO 15 MILES
  NORTHWEST OF BREWTON TO 12 MILES SOUTH OF ATMORE...AND MOVING EAST
  AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WHITFIELD...          PINE LEVEL...         JAY...
  FLOMATON...           CENTURY...            MEGARGEL...
  REPTON...             I65 AND US 84...      I65 AND CR 6...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 59 AND 96.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CST TUESDAY EVENING
FOR SOUTHWESTERN ALABAMA. A TORNADO WATCH ALSO REMAINS IN EFFECT
UNTIL 1000 PM CST TUESDAY EVENING FOR SOUTH CENTRAL ALABAMA AND
NORTHWEST FLORIDA.

&&

LAT...LON 3102 8680 3084 8700 3084 8758 3097 8754
      3111 8747 3124 8744 3140 8746 3149 8674
      3120 8670
TIME...MOT...LOC 0244Z 269DEG 38KT 3133 8731 3122 8724
          3103 8735 3085 8753

$$

3 follow-up statements

979 
WWUS54 KMOB 260300
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
900 PM CST TUE DEC 25 2012

ALC035-053-099-FLC033-113-260330-
/O.CON.KMOB.SV.W.0235.000000T0000Z-121226T0330Z/
CONECUH AL-ESCAMBIA AL-MONROE AL-SANTA ROSA FL-ESCAMBIA FL-
900 PM CST TUE DEC 25 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CST
FOR NORTHERN ESCAMBIA...NORTHWESTERN SANTA ROSA...SOUTH CENTRAL
MONROE...ESCAMBIA AND SOUTHERN CONECUH COUNTIES...

AT 855 PM CST...A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
QUARTER SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WERE LOCATED ALONG A
LINE EXTENDING FROM 13 MILES SOUTHEAST OF FRISCO CITY TO 2 MILES 
NORTH OF FLOMATON TO 12 MILES NORTHWEST OF MOLINO...MOVING EAST AT 
45 MPH.

LOCATIONS IMPACTED INCLUDE...
  WHITFIELD...          PINE LEVEL...         JAY...
  FLOMATON...           CENTURY...            REPTON...
  I65 AND US 84...      I65 AND CR 6...       I65 AND AL 83...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 65 AND 97.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CST TUESDAY EVENING
FOR SOUTHWEST ALABAMA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
1000 PM CST TUESDAY EVENING FOR SOUTH CENTRAL ALABAMA AND NORTHWEST
FLORIDA.

&&

LAT...LON 3102 8680 3084 8700 3084 8758 3097 8754
      3107 8738 3127 8737 3140 8743 3149 8674
      3120 8670
TIME...MOT...LOC 0300Z 269DEG 38KT 3133 8716 3122 8709
          3104 8720 3085 8738

$$

020 
WWUS54 KMOB 260305 RRA
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
905 PM CST TUE DEC 25 2012

ALC099-260315-
/O.CAN.KMOB.SV.W.0235.000000T0000Z-121226T0330Z/
MONROE AL-
905 PM CST TUE DEC 25 2012

...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR SOUTH
CENTRAL MONROE COUNTY...

AT 904 PM CST...THE LINE OF STORMS THAT PROMPTED THE WARNING FOR 
SOUTH CENTRAL MONROE COUNTY HAS MOVED OUT OF THE COUNTY...THUS THE 
SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CST TUESDAY EVENING
FOR SOUTHWEST ALABAMA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
1000 PM CST TUESDAY EVENING FOR SOUTH CENTRAL ALABAMA AND NORTHWEST
FLORIDA.

LAT...LON 3102 8680 3084 8700 3084 8758 3097 8754
      3107 8738 3110 8738 3112 8736 3116 8728
      3134 8725 3142 8726 3149 8674 3120 8670
TIME...MOT...LOC 0305Z 269DEG 38KT 3141 8710 3125 8701
          3101 8717 3085 8737

$$

ALC035-053-FLC033-113-260330-
/O.CON.KMOB.SV.W.0235.000000T0000Z-121226T0330Z/
CONECUH AL-ESCAMBIA AL-SANTA ROSA FL-ESCAMBIA FL-
905 PM CST TUE DEC 25 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CST
FOR NORTHERN ESCAMBIA...NORTHWESTERN SANTA ROSA...ESCAMBIA AND
SOUTHERN CONECUH COUNTIES...

AT 904 PM CST...A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
QUARTER SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WERE LOCATED ALONG A
LINE EXTENDING FROM 10 MILES WEST OF EVERGREEN TO 10 MILES NORTH OF
BREWTON TO 5 MILES EAST OF FLOMATON TO 10 MILES NORTHWEST OF
MOLINO...MOVING EAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  WHITFIELD...          PINE LEVEL...         JAY...
  FLOMATON...           CENTURY...            REPTON...
  I65 AND US 84...      I65 AND CR 6...       I65 AND AL 83...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 73 AND 96.

LAT...LON 3102 8680 3084 8700 3084 8758 3097 8754
      3107 8738 3110 8738 3112 8736 3116 8728
      3134 8725 3142 8726 3149 8674 3120 8670
TIME...MOT...LOC 0305Z 269DEG 38KT 3141 8710 3125 8701
          3101 8717 3085 8737

$$

193 
WWUS54 KMOB 260311
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
911 PM CST TUE DEC 25 2012

ALC035-053-FLC033-113-260330-
/O.CON.KMOB.SV.W.0235.000000T0000Z-121226T0330Z/
CONECUH AL-ESCAMBIA AL-SANTA ROSA FL-ESCAMBIA FL-
911 PM CST TUE DEC 25 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CST
FOR NORTHERN ESCAMBIA...NORTHWESTERN SANTA ROSA...ESCAMBIA AND
SOUTHERN CONECUH COUNTIES...

AT 908 PM CST...A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
QUARTER SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WERE LOCATED ALONG A
LINE EXTENDING FROM 6 MILES WEST OF EVERGREEN TO 5 MILES SOUTHWEST 
OF EAST BREWTON TO 7 MILES SOUTHWEST OF CENTURY...MOVING EAST AT 50 
MPH.

LOCATIONS IMPACTED INCLUDE...
  WHITFIELD...          PINE LEVEL...         JAY...
  FLOMATON...           CENTURY...            I65 AND US 84...
  I65 AND CR 6...       I65 AND AL 83...      EVERGREEN...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 78 AND 96.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CST TUESDAY EVENING
FOR SOUTHWEST ALABAMA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
1000 PM CST TUESDAY EVENING FOR SOUTH CENTRAL ALABAMA AND NORTHWEST
FLORIDA.

&&

LAT...LON 3102 8680 3084 8700 3084 8758 3097 8754
      3107 8738 3110 8738 3112 8736 3116 8728
      3118 8728 3124 8720 3135 8720 3144 8712
      3149 8674 3120 8670
TIME...MOT...LOC 0311Z 250DEG 45KT 3146 8701 3130 8692
          3106 8708 3090 8728

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 25, 6:08 PM CST	Tornado Warning	MOB	Clarke, Monroe, Wilcox	67 min
Dec 25, 6:20 PM CST	Special Marine Warning	MOB		85 min
Dec 25, 6:20 PM CST	Severe Thunderstorm Warning	MOB	Clarke, Monroe, Wilcox	55 min
Dec 25, 6:29 PM CST	Severe Thunderstorm Warning	MOB	Mobile, Washington	46 min
Dec 25, 6:38 PM CST	Coastal Flood Advisory	MOB		5 hr
Dec 25, 6:59 PM CST	Tornado Warning	MOB	Clarke, Monroe	45 min
Dec 25, 7:00 PM CST	Severe Thunderstorm Warning	MOB	Baldwin, Clarke, Mobile, Monroe, Washington	60 min
Dec 25, 7:00 PM CST	Tornado Warning	MOB	Wilcox	30 min
Dec 25, 7:19 PM CST	Severe Thunderstorm Warning	MOB	Mobile	41 min
Dec 25, 7:21 PM CST	Tornado Warning	MOB	Mobile	39 min
Dec 25, 7:34 PM CST	Tornado Warning	MOB	Wilcox	26 min
Dec 25, 7:37 PM CST	Severe Thunderstorm Warning	MOB	Clarke, Conecuh, Monroe, Wilcox	53 min
Dec 25, 7:59 PM CST	Severe Thunderstorm Warning	MOB	Baldwin, Clarke, Conecuh, Escambia, Mobile, Monroe	46 min
Dec 25, 8:03 PM CST	Special Marine Warning	MOB		87 min
Dec 25, 8:11 PM CST	Tornado Warning	MOB	Baldwin, Escambia	49 min
Dec 25, 8:36 PM CST	Tornado Warning	MOB	Butler, Conecuh	39 min
Dec 25, 8:58 PM CST	Severe Thunderstorm Warning	MOB	Baldwin	47 min
Dec 25, 9:08 PM CST	Special Marine Warning	MOB		82 min
Dec 25, 9:09 PM CST	Tornado Warning	MOB	Butler, Crenshaw	51 min
Dec 25, 9:23 PM CST	Special Marine Warning	MOB		97 min
Dec 25, 9:29 PM CST	Severe Thunderstorm Warning	MOB	Conecuh, Covington, Escambia	46 min
Dec 25, 9:35 PM CST	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Covington, Crenshaw	70 min
Dec 25, 9:45 PM CST	Severe Thunderstorm Warning	MOB	Baldwin, Covington, Escambia	45 min
Dec 25, 10:15 PM CST	Severe Thunderstorm Warning	MOB	Covington, Crenshaw	60 min
Dec 25, 10:29 PM CST	Severe Thunderstorm Warning	MOB	Covington, Escambia	46 min
Dec 25, 10:33 PM CST	Special Marine Warning	MOB		117 min
Dec 25, 10:40 PM CST	Tornado Warning	MOB	Covington	35 min
Dec 25, 11:14 PM CST	Severe Thunderstorm Warning	MOB	Covington	26 min
Dec 26, 5:43 AM CST	Wind Advisory	MOB	Butler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more	9 hr

Nearby

Severe Thunderstorm Warnings in Alabama, 2012 Severe Thunderstorm Warnings in Florida, 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; radar from the NEXRAD Level II archive.