Alert archive / Alabama / Tornado Warnings in 2012

Tornado Warning 73, NWS Mobile, AL

December 10, 2012Choctaw County, Washington County, Alabama; Wayne County, Mississippi

NWS Mobile, AL issued this tornado warning at Dec 10, 2012, 10:36 AM CST for Choctaw County, Washington County, Alabama; Wayne County, Mississippi. It was in force for 40 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, 10:36 AM CST (16:36 UTC)
Expired
Dec 10, 2012, 11:16 AM CST
In force
40 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Choctaw County, AL, Washington County, AL, Wayne County, MS

The radar

The Mobile radar (KMOB), 110 km from the middle of the area, began a volume at 16:39 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 10, 8:51 AM CSTTornado WatchSPC6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 4.6 hours before the alert went out and 195 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, Jackson, MS at 12:00Z on 2012-12-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 64 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, Jackson, MS at 12:00Z on 2012-12-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.19395878Sfc1 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
64 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
443 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
188 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

923 
WFUS54 KMOB 101636
TORMOB
ALC023-129-MSC153-101730-
/O.NEW.KMOB.TO.W.0073.121210T1636Z-121210T1730Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1036 AM CST MON DEC 10 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL WAYNE COUNTY IN SOUTHEAST MISSISSIPPI...
  SOUTH CENTRAL CHOCTAW COUNTY IN SOUTHWEST ALABAMA...
  NORTHWESTERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 1130 AM CST

* AT 1034 AM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 11 MILES NORTHWEST OF CHATOM...OR 7 MILES
  SOUTHWEST OF MILLRY...MOVING NORTHEAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MILLRY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3175 8815 3176 8811 3168 8808 3166 8808
      3165 8809 3162 8807 3161 8808 3158 8805
      3146 8845 3163 8854 3181 8817
TIME...MOT...LOC 1636Z 247DEG 34KT 3158 8839

$$
2 follow-up statements
286 
WWUS54 KMOB 101651
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1051 AM CST MON DEC 10 2012

MSC153-101700-
/O.CAN.KMOB.TO.W.0073.000000T0000Z-121210T1730Z/
WAYNE MS-
1051 AM CST MON DEC 10 2012

...THE TORNADO WARNING HAS BEEN CANCELLED FOR EAST CENTRAL WAYNE
COUNTY...

AT 1048 AM CST...THE STORM THAT PROMPTED THE WARNING FOR EAST CENTRAL
WAYNE COUNTY HAS MOVED OUT OF THE COUNTY...THUS THE TORNADO WARNING 
HAS BEEN CANCELLED.

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

LAT...LON 3177 8816 3175 8815 3176 8811 3168 8808
      3166 8808 3165 8809 3159 8807 3155 8828
      3171 8833 3178 8818
TIME...MOT...LOC 1650Z 255DEG 35KT 3162 8824

$$

ALC023-129-101730-
/O.CON.KMOB.TO.W.0073.000000T0000Z-121210T1730Z/
CHOCTAW AL-WASHINGTON AL-
1051 AM CST MON DEC 10 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1130 AM CST FOR NORTH
CENTRAL WASHINGTON AND SOUTH CENTRAL CHOCTAW COUNTIES...

AT 1048 AM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
 WAS LOCATED 11 MILES NORTH OF CHATOM...OR 3 MILES EAST OF MILLRY...
MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  RURAL NORTH CENTRAL WASHINGTON COUNTY
  RURAL SOUTH CENTRAL CHOCTAW COUNTY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3177 8816 3175 8815 3176 8811 3168 8808
      3166 8808 3165 8809 3159 8807 3155 8828
      3171 8833 3178 8818
TIME...MOT...LOC 1650Z 255DEG 35KT 3162 8824

$$
601 
WWUS54 KMOB 101716
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1116 AM CST MON DEC 10 2012

ALC023-129-101726-
/O.CAN.KMOB.TO.W.0073.000000T0000Z-121210T1730Z/
CHOCTAW AL-WASHINGTON AL-
1116 AM CST MON DEC 10 2012

...THE TORNADO WARNING HAS BEEN CANCELLED FOR NORTH CENTRAL
WASHINGTON AND SOUTH CENTRAL CHOCTAW COUNTIES...

AT 1111 AM CST...THE STORM THAT PROMPTED THE WARNING FOR NORTH
CENTRAL WASHINGTON AND SOUTH CENTRAL CHOCTAW COUNTIES HAS MOVED OUT 
OF THE COUNTY THUS THE TORNADO WARNING HAS BEEN CANCELLED.

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

LAT...LON 3177 8816 3175 8815 3176 8811 3168 8808
      3166 8808 3165 8809 3159 8807 3155 8828
      3171 8833 3178 8818
TIME...MOT...LOC 1716Z 255DEG 35KT 3169 8795

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 10, 3:51 AM CSTSmall Craft AdvisoryMOB29 hr
Dec 10, 9:43 AM CSTSpecial Marine WarningMOB2 hr
Dec 10, 9:53 AM CSTSevere Thunderstorm WarningMOBChoctaw52 min
Dec 10, 10:03 AM CSTTornado WarningMOBBaldwin42 min
Dec 10, 10:31 AM CSTSevere Thunderstorm WarningMOBWashington49 min
Dec 10, 10:37 AM CSTTornado WarningMOBBaldwin38 min
Dec 10, 10:58 AM CSTTornado WarningMOBClarke41 min
Dec 10, 11:32 AM CSTSevere Thunderstorm WarningMOBMobile, Washington42 min
Dec 10, 11:36 AM CSTSevere Thunderstorm WarningMOBClarke, Monroe, Wilcox54 min
Dec 10, 12:09 PM CSTSevere Thunderstorm WarningMOBBaldwin, Clarke, Monroe47 min
Dec 10, 12:18 PM CSTSevere Thunderstorm WarningMOBButler, Monroe, Wilcox42 min
Dec 10, 12:30 PM CSTSevere Thunderstorm WarningMOBClarke, Conecuh, Monroe28 min
Dec 10, 12:32 PM CSTSevere Thunderstorm WarningMOBButler, Wilcox29 min
Dec 10, 12:37 PM CSTSpecial Marine WarningMOB92 min
Dec 10, 9:00 AM CSTSevere Thunderstorm WarningMOBWayne60 min
Dec 10, 9:23 AM CSTSevere Thunderstorm WarningMOBPerry52 min
Dec 10, 10:02 AM CSTSevere Thunderstorm WarningMOBGreene, Perry, Wayne58 min
Dec 10, 10:26 AM CSTSevere Thunderstorm WarningMOBGreene, Perry, Stone64 min

Nearby

Tornado Warnings in Alabama, 2012Tornado Warnings in Mississippi, 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.