Alert archive / Mississippi / Tornado Warnings in 2012

Tornado Warning 68, NWS Mobile, AL

September 30, 20124 counties in Mississippi

NWS Mobile, AL issued this tornado warning at Sep 30, 2012, 5:04 PM CDT for 4 counties in Mississippi. It was in force for 41 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
Sep 30, 2012, 5:04 PM CDT (22:04 UTC)
Expired
Sep 30, 2012, 5:45 PM CDT
In force
41 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties George County, MS, Greene County, MS, Perry County, MS, Stone County, MS

The radar

The Mobile radar (KMOB), 71 km from the middle of the area, began a volume at 22:07 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
Sep 30, 2:36 PM CDTTornado WatchSPC3 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.1 hours before the alert went out and 118 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, Slidell Radar S, LA at 12:00Z on 2012-09-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1360 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, Slidell Radar S, LA at 12:00Z on 2012-09-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 square meters per square second.193958Sfc1 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
1360 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
552 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
178 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.9

Open this sounding in Storm Lab

The text

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

480 
WFUS54 KMOB 302204
TORMOB
MSC039-041-111-131-302245-
/O.NEW.KMOB.TO.W.0068.120930T2204Z-120930T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
504 PM CDT SUN SEP 30 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN GEORGE COUNTY IN SOUTHEAST MISSISSIPPI...
  SOUTHWESTERN GREENE COUNTY IN SOUTHEAST MISSISSIPPI...
  SOUTHEASTERN PERRY COUNTY IN SOUTHEAST MISSISSIPPI...
  NORTHEASTERN STONE COUNTY IN SOUTHEAST MISSISSIPPI...

* UNTIL 545 PM CDT

* AT 504 PM CDT...A SEVERE THUNDERSTORM WITH STRONG ROTATION AND
  LIKELY PRODUCING A TORNADO WAS LOCATED 11 MILES EAST OF WIGGINS...
  OR 13 MILES NORTHEAST OF PERKINSTON...MOVING NORTHEAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MCLAIN...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A STURDY BUILDING.

TO REPORT SEVERE WEATHER...CALL (800) 284-9059.

&&

LAT...LON 3117 8884 3104 8867 3086 8896 3090 8902
TIME...MOT...LOC 2204Z 224DEG 24KT 3091 8895

$$
3 follow-up statements
884 
WWUS54 KMOB 302212
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
512 PM CDT SUN SEP 30 2012

MSC131-302221-
/O.CAN.KMOB.TO.W.0068.000000T0000Z-120930T2245Z/
STONE MS-
512 PM CDT SUN SEP 30 2012

...THE TORNADO WARNING HAS BEEN CANCELLED FOR NORTHEASTERN STONE
COUNTY...

AT 511 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR NORTHEASTERN 
STONE COUNTY HAS MOVED OUT OF THE COUNTY...THUS THE TORNADO WARNING 
HAS BEEN CANCELLED.

TO REPORT SEVERE WEATHER...CALL (800) 284-9059.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT SUNDAY EVENING FOR
SOUTHEAST MISSISSIPPI.

LAT...LON 3117 8884 3104 8867 3091 8888 3091 8895
      3094 8899
TIME...MOT...LOC 2211Z 224DEG 24KT 3095 8892

$$

MSC039-041-111-302245-
/O.CON.KMOB.TO.W.0068.000000T0000Z-120930T2245Z/
PERRY MS-GREENE MS-GEORGE MS-
512 PM CDT SUN SEP 30 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR
NORTHWESTERN GEORGE...SOUTHWESTERN GREENE AND SOUTHEASTERN PERRY
COUNTIES...

AT 511 PM CDT...A SEVERE THUNDERSTORM WITH STRONG ROTATION AND LIKELY
PRODUCING A TORNADO  WAS LOCATED 12 MILES NORTHEAST OF WIGGINS...OR
14 MILES SOUTHWEST OF MCLAIN...MOVING NORTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  MCLAIN...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A STURDY BUILDING.

TO REPORT SEVERE WEATHER...CALL (800) 284-9059.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT SUNDAY EVENING FOR
SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3117 8884 3104 8867 3091 8888 3091 8895
      3094 8899
TIME...MOT...LOC 2211Z 224DEG 24KT 3095 8892

$$
893 
WWUS54 KMOB 302219
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
519 PM CDT SUN SEP 30 2012

MSC039-041-111-302245-
/O.CON.KMOB.TO.W.0068.000000T0000Z-120930T2245Z/
PERRY MS-GREENE MS-GEORGE MS-
519 PM CDT SUN SEP 30 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR
NORTHWESTERN GEORGE...SOUTHWESTERN GREENE AND CENTRAL PERRY
COUNTIES...

AT 519 PM CDT...A SEVERE THUNDERSTORM WITH STRONG ROTATION AND LIKELY
PRODUCING A TORNADO WAS LOCATED 16 MILES NORTHEAST OF WIGGINS...OR 
10 MILES SOUTHWEST OF MCLAIN...MOVING NORTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  MCLAIN...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A STURDY BUILDING.

TO REPORT SEVERE WEATHER...CALL (800) 284-9059.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT SUNDAY EVENING FOR
SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3093 8884 3095 8891 3098 8896 3117 8884
      3104 8867
TIME...MOT...LOC 2219Z 224DEG 24KT 3099 8889

$$
948 
WWUS54 KMOB 302229
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
529 PM CDT SUN SEP 30 2012

MSC039-302238-
/O.CAN.KMOB.TO.W.0068.000000T0000Z-120930T2245Z/
GEORGE MS-
529 PM CDT SUN SEP 30 2012

...THE TORNADO WARNING HAS BEEN CANCELLED FOR NORTHWESTERN GEORGE
COUNTY...

AT 528 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR NORTHWESTERN 
GEORGE COUNTY HAS MOVED OUT OF THE COUNTY. THUS THE TORNADO WARNING 
HAS BEEN CANCELLED.

TO REPORT SEVERE WEATHER...CALL (800) 284-9059.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT SUNDAY EVENING FOR
SOUTHEAST MISSISSIPPI.

LAT...LON 3117 8884 3106 8871 3099 8884 3104 8892
TIME...MOT...LOC 2228Z 224DEG 24KT 3103 8884

$$

MSC041-111-302245-
/O.CON.KMOB.TO.W.0068.000000T0000Z-120930T2245Z/
PERRY MS-GREENE MS-
529 PM CDT SUN SEP 30 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR
SOUTHWESTERN GREENE AND EAST CENTRAL PERRY COUNTIES...

...RESIDENTS IN MCLAIN SHOULD TAKE COVER IMMEDIATELY...

AT 528 PM CDT...A SEVERE THUNDERSTORM WITH STRONG ROTATION AND LIKELY
PRODUCING A TORNADO WAS LOCATED 17 MILES WEST OF LUCEDALE...OR 6 
MILES SOUTH OF MCLAIN...MOVING NORTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  MCLAIN...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A STURDY BUILDING.

TO REPORT SEVERE WEATHER...CALL (800) 284-9059.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT SUNDAY EVENING FOR
SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3117 8884 3106 8871 3099 8884 3104 8892
TIME...MOT...LOC 2228Z 224DEG 24KT 3103 8884

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 30, 3:36 PM CDTSevere Thunderstorm WarningMOBGeorge, Perry, Stone54 min
Sep 30, 4:09 PM CDTTornado WarningMOBStone51 min
Sep 30, 4:33 PM CDTTornado WarningMOBPerry, Stone42 min
Sep 30, 6:08 PM CDTTornado WarningMOBGreene34 min

Nearby

Tornado 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.