Alert archive / Mississippi / Tornado Warnings in 2012

Tornado Warning 109, NWS New Orleans, LA

December 25, 2012Walthall County, Mississippi

NWS New Orleans, LA issued this tornado warning at Dec 25, 2012, 3:47 PM CST for Walthall County, Mississippi. It was in force for 28 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, 3:47 PM CST (21:47 UTC)
Expired: Dec 25, 2012, 4:15 PM CST
In force: 28 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon

County Walthall 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
Dec 25, 12:58 PM CST	Tornado Watch PDS	SPC	9 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 9.8 hours before the alert went out and 113 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: 790 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 576 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 181 m²/s²
0-3 km storm-relative helicity: 237 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 10.0

Open this sounding in Storm Lab

The text

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

695 
WFUS54 KLIX 252147
TORLIX
MSC147-252215-
/O.NEW.KLIX.TO.W.0109.121225T2147Z-121225T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
347 PM CST TUE DEC 25 2012

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN WALTHALL COUNTY IN SOUTHERN MISSISSIPPI...

* UNTIL 415 PM CST

* AT 346 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 8 MILES
  NORTHWEST OF TYLERTOWN...OR 13 MILES EAST OF MCCOMB...MOVING EAST
  AT 55 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SALEM

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS UNDER A WORKBENCH OR OTHER
PIECE OF STURDY FURNITURE. SEEK SHELTER ON THE LOWEST FLOOR OF THE
BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM
WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

PLEASE FOLLOW OUR OFFICE ON BOTH FACEBOOK AND TWITTER FOR MORE
INFORMATION ON SEVERE WEATHER AND TO RELAY WEATHER REPORTS AND
PHOTOS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CST TUESDAY EVENING
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

&&

LAT...LON 3124 9004 3123 9002 3118 9002 3117 9000
      3114 9000 3114 8994 3112 8993 3107 9026
      3131 9026 3134 9008 3133 9007 3134 9004
TIME...MOT...LOC 2148Z 258DEG 50KT 3118 9023

$$

CAB

1 follow-up statement

957 
WWUS54 KLIX 252206
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
406 PM CST TUE DEC 25 2012

MSC147-252215-
/O.CON.KLIX.TO.W.0109.000000T0000Z-121225T2215Z/
WALTHALL MS-
406 PM CST TUE DEC 25 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CST FOR NORTHERN
WALTHALL COUNTY...

AT 401 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
STORM WAS LOCATED NEAR TYLERTOWN...OR 18 MILES NORTH OF
FRANKLINTON...MOVING EAST AT 45 MPH.

THE SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO WILL OTHERWISE
REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS UNDER A WORKBENCH OR OTHER
PIECE OF STURDY FURNITURE. SEEK SHELTER ON THE LOWEST FLOOR OF THE
BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM
WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

PLEASE FOLLOW OUR OFFICE ON BOTH FACEBOOK AND TWITTER FOR MORE
INFORMATION ON SEVERE WEATHER AND TO RELAY WEATHER REPORTS AND
PHOTOS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CST TUESDAY EVENING
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

&&

LAT...LON 3124 9004 3114 9002 3118 9002 3117 9000
      3114 9000 3114 8994 3112 8993 3107 9026
      3133 9011 3134 9008 3133 9007 3134 9004
TIME...MOT...LOC 2207Z 251DEG 38KT 3113 9004

$$

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 24, 8:34 PM CST	Dense Fog Advisory	LIX		9 hr
Dec 25, 1:45 PM CST	Severe Thunderstorm Warning	LIX	Amite, Wilkinson	60 min
Dec 25, 1:48 PM CST	Severe Thunderstorm Warning	LIX	Amite	27 min
Dec 25, 1:52 PM CST	Tornado Warning	LIX	Wilkinson	53 min
Dec 25, 1:59 PM CST	Tornado Warning	LIX	Wilkinson	46 min
Dec 25, 2:30 PM CST	Tornado Warning	LIX	Amite	45 min
Dec 25, 2:38 PM CST	Tornado Warning	LIX	Wilkinson	37 min
Dec 25, 2:54 PM CST	Tornado Warning	LIX	Pearl River	36 min
Dec 25, 3:29 PM CST	Tornado Warning	LIX	Pearl River	22 min
Dec 25, 3:45 PM CST	Tornado Warning	LIX	Hancock, Harrison, Pearl River	30 min
Dec 25, 3:54 PM CST	Severe Thunderstorm Warning	LIX	Walthall	66 min
Dec 25, 4:01 PM CST	Severe Thunderstorm Warning	LIX	Hancock, Harrison	44 min
Dec 25, 4:47 PM CST	Severe Thunderstorm Warning	LIX	Pearl River	58 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.