Alert archive / Mississippi / Tornado Warnings in 2012

Tornado Warning 64, NWS Jackson, MS

August 30, 2012Jefferson Davis County, Lawrence County, Marion County, Mississippi

NWS Jackson, MS issued this tornado warning at Aug 30, 2012, 8:48 PM CDT for Jefferson Davis County, Lawrence County, Marion County, Mississippi. It was in force for 42 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: Aug 30, 2012, 8:48 PM CDT (01:48 UTC)
Expired: Aug 30, 2012, 9:30 PM CDT
In force: 42 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Jefferson Davis County, MS, Lawrence County, MS, Marion County, MS

The watch it was issued in

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

Issued	Product	Office	Lasted
Aug 30, 3:56 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 1.8 hours before the alert went out and 112 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: 42 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 796 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 303 m²/s²
0-3 km storm-relative helicity: 319 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

493 
WFUS54 KJAN 310148
TORJAN
MSC065-077-091-310230-
/O.NEW.KJAN.TO.W.0064.120831T0148Z-120831T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
848 PM CDT THU AUG 30 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN JEFFERSON DAVIS COUNTY IN SOUTH CENTRAL MISSISSIPPI...
  SOUTHEASTERN LAWRENCE COUNTY IN SOUTH CENTRAL MISSISSIPPI...
  NORTHWESTERN MARION COUNTY IN SOUTH CENTRAL MISSISSIPPI...

* UNTIL 930 PM CDT

* AT 848 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9 MILES
  SOUTHWEST OF HOLLY SPRINGS MOVING NORTHEAST AT 35 MPH.

* THE TORNADO WILL BE NEAR...
  HOLLY SPRINGS BY 900 PM CDT...
  TILTON BY 905 PM CDT...
  OAK VALE AND SOCIETY HILL BY 910 PM CDT...
  ARM BY 915 PM CDT...
  PROGRESS BY 925 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WARNING MEANS THAT A TORNADO IS OCCURRING OR IMMINENT. YOU
SHOULD ACTIVATE YOUR TORNADO ACTION PLAN AND TAKE PROTECTIVE ACTION
NOW.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT THURSDAY EVENING
FOR MISSISSIPPI.

&&

LAT...LON 3123 9004 3124 9005 3132 9005 3133 9008
      3135 9012 3156 9002 3153 8980 3127 8995
      3120 9001 3120 9004
TIME...MOT...LOC 0148Z 207DEG 32KT 3124 9006

$$

JA

2 follow-up statements

541 
WWUS54 KJAN 310206
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
906 PM CDT THU AUG 30 2012

MSC065-077-091-310230-
/O.CON.KJAN.TO.W.0064.000000T0000Z-120831T0230Z/
MARION MS-LAWRENCE MS-JEFFERSON DAVIS MS-
906 PM CDT THU AUG 30 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR
SOUTHWESTERN JEFFERSON DAVIS...SOUTHEASTERN LAWRENCE AND NORTHWESTERN
MARION COUNTIES...

AT 906 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUE TO
TRACK A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS 
TORNADO WAS LOCATED NORTHWEST OF HOLLY SPRINGS MOVING NORTHEAST AT 
35 MPH.

THE TORNADO WILL BE NEAR...
  OAK VALE AND SOCIETY HILL BY 915 PM CDT...
  ARM BY 920 PM CDT...
  PROGRESS BY 925 PM CDT...

A TORNADO WARNING MEANS THAT A TORNADO IS OCCURRING OR IMMINENT. YOU
SHOULD ACTIVATE YOUR TORNADO ACTION PLAN AND TAKE PROTECTIVE ACTION
NOW.

LAT...LON 3132 8993 3130 9000 3132 9005 3133 9008
      3143 9008 3150 9005 3156 9002 3153 8980
TIME...MOT...LOC 0206Z 205DEG 30KT 3136 9001

$$
JA

377 
WWUS54 KJAN 310228
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
928 PM CDT THU AUG 30 2012

MSC065-077-091-310236-
/O.EXP.KJAN.TO.W.0064.000000T0000Z-120831T0230Z/
MARION MS-LAWRENCE MS-JEFFERSON DAVIS MS-
928 PM CDT THU AUG 30 2012

...THE TORNADO WARNING FOR SOUTHWESTERN JEFFERSON DAVIS...
SOUTHEASTERN LAWRENCE AND NORTHWESTERN MARION COUNTIES WILL EXPIRE AT
930 PM CDT...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT THURSDAY EVENING
FOR MISSISSIPPI.

LAT...LON 3132 8993 3130 9000 3132 9005 3133 9008
      3143 9008 3150 9005 3156 9002 3153 8980
TIME...MOT...LOC 0226Z 205DEG 30KT 3151 8993

$$

JA

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 30, 7:41 PM CDT	Special Weather Statement	JAN	Rankin, Simpson	59 min
Aug 30, 8:01 PM CDT	Special Weather Statement	JAN	Jasper	29 min
Aug 30, 8:10 PM CDT	Tornado Warning	JAN	Jasper	50 min
Aug 30, 8:23 PM CDT	Tornado Warning	JAN	Covington, Jasper, Jones, Smith	37 min
Aug 30, 8:29 PM CDT	Areal Flood Warning	JAN	Bolivar, Washington	12 hr
Aug 30, 8:35 PM CDT	Flash Flood Watch	JAN	Adams, Claiborne, Clarke, Copiah, Covington, Forrest and 20 more	4 hr
Aug 30, 8:48 PM CDT	Tornado Warning	JAN	Newton	45 min
Aug 30, 9:03 PM CDT	Flash Flood Warning	JAN	Jefferson Davis, Lawrence, Marion	117 min
Aug 30, 9:29 PM CDT	Tornado Warning	JAN	Neshoba	46 min
Aug 30, 9:39 PM CDT	Special Weather Statement	JAN	Rankin	31 min
Aug 30, 10:07 PM CDT	Tornado Warning	JAN	Attala, Choctaw, Winston	32 min
Aug 31, 1:36 AM CDT	Special Weather Statement	JAN	Madison, Rankin	29 min
Aug 31, 10:21 AM CDT	River Flood Warning	JAN	Copiah, Simpson	48 hr
Aug 31, 3:11 PM CDT	Special Weather Statement	JAN	Claiborne, Jefferson	39 min
Aug 31, 3:30 PM CDT	Special Weather Statement	JAN	Jasper, Simpson, Smith	40 min
Aug 31, 3:43 PM CDT	Special Weather Statement	JAN	Claiborne	32 min
Aug 31, 4:02 PM CDT	Special Weather Statement	JAN	Warren	43 min
Aug 31, 4:19 PM CDT	Special Weather Statement	JAN	Lamar, Marion	41 min
Aug 31, 4:37 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Warren	38 min
Aug 31, 4:57 PM CDT	Severe Thunderstorm Warning	JAN	Sharkey	33 min
Aug 31, 5:01 PM CDT	Special Weather Statement	JAN	Madison	29 min
Aug 31, 5:28 PM CDT	Special Weather Statement	JAN	Lowndes	32 min
Aug 31, 5:29 PM CDT	Special Weather Statement	JAN	Lowndes	31 min

Nearby

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