Alert archive / Alabama / Tornado Warnings in 2012

Tornado Warning 93, NWS Mobile, AL

December 20, 2012Conecuh County, Escambia County, Monroe County, Alabama

NWS Mobile, AL issued this tornado warning at Dec 20, 2012, 7:19 AM CST for Conecuh County, Escambia County, Monroe County, Alabama. It was in force for 56 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 20, 2012, 7:19 AM CST (13:19 UTC)
Expired
Dec 20, 2012, 8:15 AM CST
In force
56 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Conecuh County, AL, Escambia County, AL, Monroe County, AL

The radar

The Mobile radar (KMOB), 124 km from the middle of the area, began a volume at 13:19 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
Dec 20, 4:23 AM CSTTornado WatchSPC9 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 1.3 hours before the alert went out and 206 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 2012-12-20Temperature 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 2012-12-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 574 square meters per square second.1939587897Sfc1 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
512 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
574 m²/s²
0-3 km storm-relative helicity
705 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

448 
WFUS54 KMOB 201319
TORMOB
ALC035-053-099-201415-
/O.NEW.KMOB.TO.W.0093.121220T1319Z-121220T1415Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
719 AM CST THU DEC 20 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  CONECUH COUNTY IN SOUTH CENTRAL ALABAMA...
  NORTHWESTERN ESCAMBIA COUNTY IN SOUTH CENTRAL ALABAMA...
  CENTRAL MONROE COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 815 AM CST

* AT 714 AM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 9 MILES NORTHWEST OF ATMORE...OR 2 MILES
  SOUTHWEST OF MCCULLOUGH...MOVING NORTHEAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  POARCH CREEK RESERVATION...                 EXCEL...
  REPTON...             I65 AND US 84...      I65 AND CR 6...
  I65 AND CR 29...      I65 AND AL 83...      I65 AND AL 41...
  EVERGREEN...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 54 AND 105.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST THURSDAY FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3107 8751 3111 8759 3119 8759 3124 8756
      3139 8740 3155 8724 3164 8714 3168 8707
      3162 8697 3155 8687 3149 8681 3125 8672
      3119 8697
TIME...MOT...LOC 1319Z 226DEG 38KT 3118 8751

$$
2 follow-up statements
564 
WWUS54 KMOB 201334
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
734 AM CST THU DEC 20 2012

ALC035-053-099-201415-
/O.CON.KMOB.TO.W.0093.000000T0000Z-121220T1415Z/
CONECUH AL-ESCAMBIA AL-MONROE AL-
734 AM CST THU DEC 20 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 AM CST FOR CENTRAL
MONROE...NORTHERN ESCAMBIA AND CONECUH COUNTIES...

AT 728 AM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 
WAS LOCATED 12 MILES SOUTH OF FRISCO CITY...OR 5 MILES SOUTHEAST OF
URIAH...MOVING NORTHEAST AT 50 MPH.

ANOTHER CIRCULATING STORM HAS JUST MOVED INTO EXTREME NORTHWESTERN 
ESCAMBIA COUNTY ALABAMA AND WAS ALSO MOVING NORTHEAST AROUND 50 MPH. 
THIS STORM IS ALSO IN THE TORNADO WARNING.

LOCATIONS IMPACTED INCLUDE...
  POARCH CREEK RESERVATION...                 EXCEL...
  REPTON...             I65 AND US 84...      I65 AND CR 6...
  I65 AND CR 29...      I65 AND AL 83...      I65 AND AL 41...
  EVERGREEN...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 54 AND 105.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST THURSDAY FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3107 8751 3111 8759 3119 8759 3124 8756
      3139 8740 3155 8724 3164 8714 3168 8707
      3162 8697 3155 8687 3149 8681 3125 8672
      3119 8697
TIME...MOT...LOC 1333Z 219DEG 44KT 3130 8740

$$
423 
WWUS54 KMOB 201354
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
754 AM CST THU DEC 20 2012

ALC035-053-099-201415-
/O.CON.KMOB.TO.W.0093.000000T0000Z-121220T1415Z/
CONECUH AL-ESCAMBIA AL-MONROE AL-
754 AM CST THU DEC 20 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 AM CST FOR CENTRAL
MONROE...NORTHERN ESCAMBIA AND CONECUH COUNTIES...

AT 751 AM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 
WAS LOCATED 7 MILES SOUTH OF FRISCO CITY...OR 5 MILES SOUTHEAST OF
MEGARGEL...MOVING NORTHEAST AT 50 MPH.

ANOTHER SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO WAS 
LOCATED A FEW MILES NORTH OF REPTON AND WAS  ALSO MOVING NORTHEAST 
AROUND 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  POARCH CREEK RESERVATION...                 EXCEL...
  REPTON...             I65 AND US 84...      I65 AND CR 6...
  I65 AND CR 29...      I65 AND AL 83...      I65 AND AL 41...
  EVERGREEN...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 54 AND 105.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST THURSDAY FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3107 8751 3111 8759 3119 8759 3124 8756
      3139 8740 3155 8724 3164 8714 3168 8707
      3162 8697 3155 8687 3149 8681 3125 8672
      3119 8697
TIME...MOT...LOC 1353Z 226DEG 42KT 3136 8734

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 20, 2:51 AM CSTGale WarningMOB30 hr
Dec 20, 2:51 AM CSTSmall Craft AdvisoryMOB33 hr
Dec 20, 4:11 AM CSTTornado WarningMOBMobile64 min
Dec 20, 4:42 AM CSTTornado WarningMOBMobile36 min
Dec 20, 4:49 AM CSTTornado WarningMOBChoctaw30 min
Dec 20, 5:14 AM CSTTornado WarningMOBBaldwin46 min
Dec 20, 5:29 AM CSTTornado WarningMOBWashington46 min
Dec 20, 5:38 AM CSTTornado WarningMOBChoctaw, Clarke, Washington52 min
Dec 20, 5:45 AM CSTTornado WarningMOBBaldwin, Mobile39 min
Dec 20, 6:03 AM CSTTornado WarningMOBClarke28 min
Dec 20, 6:06 AM CSTTornado WarningMOBWashington22 min
Dec 20, 6:08 AM CSTTornado WarningMOBBaldwin21 min
Dec 20, 6:11 AM CSTTornado WarningMOBConecuh, Escambia, Monroe49 min
Dec 20, 6:39 AM CSTTornado WarningMOBConecuh, Monroe35 min
Dec 20, 6:40 AM CSTTornado WarningMOBWashington50 min
Dec 20, 6:56 AM CSTTornado WarningMOBBaldwin, Mobile34 min
Dec 20, 7:02 AM CSTTornado WarningMOBBaldwin, Mobile58 min
Dec 20, 7:06 AM CSTSpecial Marine WarningMOB84 min
Dec 20, 7:18 AM CSTTornado WarningMOBClarke, Washington42 min
Dec 20, 7:25 AM CSTTornado WarningMOBClarke, Wilcox50 min
Dec 20, 7:36 AM CSTTornado WarningMOBBaldwin, Clarke, Monroe42 min
Dec 20, 7:52 AM CSTTornado WarningMOBBaldwin53 min
Dec 20, 8:10 AM CSTTornado WarningMOBWilcox32 min
Dec 20, 8:14 AM CSTTornado WarningMOBConecuh, Monroe33 min
Dec 20, 8:15 AM CSTSevere Thunderstorm WarningMOBChoctaw, Clarke17 min
Dec 20, 8:26 AM CSTSpecial Marine WarningMOB94 min
Dec 20, 8:27 AM CSTTornado WarningMOBEscambia63 min
Dec 20, 8:29 AM CSTTornado WarningMOBEscambia46 min
Dec 20, 9:11 AM CSTTornado WarningMOBEscambia25 min
Dec 20, 9:25 AM CSTTornado WarningMOBCovington55 min
Dec 20, 9:28 AM CSTSevere Thunderstorm WarningMOBWilcox15 min
Dec 20, 9:30 AM CSTSpecial Marine WarningMOB60 min
Dec 20, 9:49 AM CSTSevere Thunderstorm WarningMOBWilcox26 min
Dec 20, 9:50 AM CSTTornado WarningMOBCovington, Crenshaw16 min
Dec 20, 10:23 AM CSTSpecial Marine WarningMOB82 min
Dec 20, 11:34 AM CSTSpecial Marine WarningMOB61 min
Dec 20, 2:19 PM CSTFire Weather WatchMOBButler, Conecuh, Covington, Crenshaw, Escambia, Monroe and 1 more16 hr
Dec 20, 2:19 PM CSTRed Flag WarningMOBButler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more27 hr

Nearby

Tornado Warnings in Alabama, 2012Every tornado warning in 2012Tornadoes 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.