Alert archive / Mississippi / Tornado Warnings in 2012

Tornado Warning 82, NWS New Orleans, LA

December 10, 2012Pike County, Walthall County, Mississippi; Washington Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Dec 10, 2012, 7:33 AM CST for Pike County, Walthall County, Mississippi; Washington Parish, Louisiana. It was in force for 27 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Dec 10, 2012, 7:33 AM CST (13:33 UTC)
Expired
Dec 10, 2012, 8:00 AM CST
In force
27 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon

Counties Washington Parish, LA, Pike County, MS, Walthall County, MS

What was reported inside it

TimeReportWhereRemark
Dec 10, 7:57 AM CSTTORNADO 1Dexter, MSNWS SURVEY CONFIRMS EF1 TORNADO BEGINNING IN SIMONDS... MOVING THROUGH THE TOWN OF DEXTER AND ENDING NEAR MILDRED. PATH LENGTH 20 MILES WITH MAX WIDTH OF 100 YARDS. WINDS ESTIMATED AT 100 MPH.
Dec 10, 7:57 AM CSTTORNADO6 S Tylertown, MSWALTHALL COUNTY EMERGENCY MANAGER REPORTED A POSSIBLE TORNADO ALONG SIMON ROAD IN THE SOUTHERN PART OF THE COUNTY NEAR THE MS/LA STATE LINE. DAMAGE TO A BARN AND TO THE ROOF OF AN OFFICE BUILDING WERE REPORTED.
Dec 10, 8:06 AM CSTTORNADO6 Se Tylertown, MSWALTHALL COUNTY EMERGENCY MANAGER REPORTED A POSSIBLE TORNADO ALONG AIRLINE HIGHWAY JUST SOUTH OF HIGHWAY 48.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

IssuedProductOfficeLasted
Dec 10, 5:44 AM CSTTornado WatchSPC5 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 1.6 hours before the alert went out and 99 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 2012-12-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 767 joules per kilogram.LCLEL10008507005003002001001 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, Slidell Radar S, LA at 12:00Z on 2012-12-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 237 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
767 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
488 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
237 m²/s²
0-3 km storm-relative helicity
263 m²/s²
Significant tornado parameter
1.3
Supercell composite
7.9

Open this sounding in Storm Lab

The text

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

374 
WFUS54 KLIX 101333
TORLIX
LAC117-MSC113-147-101400-
/O.NEW.KLIX.TO.W.0082.121210T1333Z-121210T1400Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
733 AM CST MON DEC 10 2012

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN WASHINGTON PARISH IN SOUTHEAST LOUISIANA...
  SOUTHEASTERN PIKE COUNTY IN SOUTHERN MISSISSIPPI...
  SOUTHERN WALTHALL COUNTY IN SOUTHERN MISSISSIPPI...

* UNTIL 800 AM CST

* AT 729 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR MOUNT
  HERMAN...OR 15 MILES NORTHWEST OF FRANKLINTON...MOVING NORTHEAST AT
  40 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  TYLERTOWN AND DEXTER

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 AM CST MONDAY MORNING
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

&&

LAT...LON 3118 9002 3117 9000 3114 9000 3114 8994
      3108 8991 3108 8984 3107 8983 3105 8983
      3090 9031 3095 9035 3108 9035 3122 9003
TIME...MOT...LOC 1333Z 246DEG 34KT 3101 9029

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 10, 6:31 AM CSTTornado WarningLIXAmite29 min
Dec 10, 7:24 AM CSTSevere Thunderstorm WarningLIXPike, Walthall36 min
Dec 10, 7:53 AM CSTTornado WarningLIXWalthall37 min
Dec 10, 8:23 AM CSTSevere Thunderstorm WarningLIXPearl River, Pike, Walthall52 min
Dec 10, 9:10 AM CSTSevere Thunderstorm WarningLIXPearl River65 min
Dec 10, 9:19 AM CSTTornado WarningLIXPearl River26 min
Dec 10, 9:25 AM CSTSevere Thunderstorm WarningLIXPearl River65 min
Dec 10, 9:41 AM CSTTornado WarningLIXPearl River49 min
Dec 10, 10:17 AM CSTSevere Thunderstorm WarningLIXHancock, Pearl River22 min
Dec 10, 10:18 AM CSTSevere Thunderstorm WarningLIXHancock42 min
Dec 10, 3:13 AM CSTSmall Craft AdvisoryLIX24 hr
Dec 10, 6:55 AM CSTSevere Thunderstorm WarningLIXEast Baton Rouge, East Feliciana, Livingston, Saint Helena, West Baton Rouge35 min
Dec 10, 7:23 AM CSTSevere Thunderstorm WarningLIXEast Baton Rouge, Livingston, Saint Helena, West Baton Rouge37 min
Dec 10, 7:45 AM CSTTornado WarningLIXLivingston, Saint Helena30 min
Dec 10, 7:56 AM CSTSevere Thunderstorm WarningLIXLivingston, Saint Helena, Tangipahoa34 min
Dec 10, 8:20 AM CSTSevere Thunderstorm WarningLIXAscension, Assumption, Iberville, Saint James40 min
Dec 10, 8:46 AM CSTSevere Thunderstorm WarningLIXEast Baton Rouge, Livingston, Saint Helena, Saint Tammany, Tangipahoa29 min
Dec 10, 8:54 AM CSTTornado WarningLIXAscension, Livingston36 min
Dec 10, 8:58 AM CSTSevere Thunderstorm WarningLIXAscension, Saint James, Saint John the Baptist47 min
Dec 10, 9:00 AM CSTSpecial Marine WarningLIX60 min
Dec 10, 9:43 AM CSTSevere Thunderstorm WarningLIXAssumption, Lafourche, Saint Charles, Saint James, Saint John the Baptist47 min
Dec 10, 9:55 AM CSTSpecial Marine WarningLIX50 min
Dec 10, 10:42 AM CSTSpecial Marine WarningLIX33 min

Nearby

Tornado Warnings in Mississippi, 2012Tornado Warnings in Louisiana, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.