Alert archive / Mississippi / Tornado Warnings in 2011

Tornado Warning 158, NWS New Orleans, LA

November 16, 2011Pike County, Walthall County, Mississippi

NWS New Orleans, LA issued this tornado warning at Nov 16, 2011, 1:44 AM CST for Pike County, Walthall County, Mississippi. It was in force for 46 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: Nov 16, 2011, 1:44 AM CST (07:44 UTC)
Expired: Nov 16, 2011, 2:30 AM CST
In force: 46 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon

Counties Pike County, MS, Walthall County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 7.7 hours before the alert went out and 111 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: 1734 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 661 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 116 m²/s²
0-3 km storm-relative helicity: 166 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 8.1

Open this sounding in Storm Lab

The text

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

568 
WFUS54 KLIX 160744
TORLIX
MSC113-147-160830-
/O.NEW.KLIX.TO.W.0158.111116T0744Z-111116T0830Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
144 AM CST WED NOV 16 2011

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN PIKE COUNTY IN SOUTHERN MISSISSIPPI...
  NORTHWESTERN WALTHALL COUNTY IN SOUTHERN MISSISSIPPI...

* UNTIL 230 AM CST

* AT 136 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 21 MILES
  SOUTHWEST OF SALEM...OR 14 MILES SOUTH OF MCCOMB...MOVING NORTHEAST
  AT 35 MPH.

* THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
  INDICATED COUNTIES.

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.

&&

LAT...LON 3119 9003 3100 9038 3100 9040 3106 9046
      3133 9017
TIME...MOT...LOC 0744Z 228DEG 29KT 3109 9035

$$

2 follow-up statements

558 
WWUS54 KLIX 160801
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
201 AM CST WED NOV 16 2011

MSC113-160811-
/O.CAN.KLIX.TO.W.0158.000000T0000Z-111116T0830Z/
PIKE MS-
201 AM CST WED NOV 16 2011

...THE TORNADO WARNING FOR SOUTHEASTERN PIKE COUNTY IS CANCELLED...

LAT...LON 3124 9007 3122 9006 3113 9026 3122 9026
      3131 9015
TIME...MOT...LOC 0801Z 229DEG 33KT 3120 9020

$$

MSC147-160830-
/O.CON.KLIX.TO.W.0158.000000T0000Z-111116T0830Z/
WALTHALL MS-
201 AM CST WED NOV 16 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 AM CST FOR CENTRAL
WALTHALL COUNTY...

AT 157 AM CST...A TORNADO WAS REPORTED.  THIS TORNADO WAS LOCATED 8
MILES SOUTHWEST OF SALEM...OR 14 MILES EAST OF MCCOMB...MOVING
NORTHEAST AT 40 MPH.

THE 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.

&&

LAT...LON 3124 9007 3122 9006 3113 9026 3122 9026
      3131 9015
TIME...MOT...LOC 0801Z 229DEG 33KT 3120 9020

$$

097 
WWUS54 KLIX 160832
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
232 AM CST WED NOV 16 2011

MSC147-160842-
/O.EXP.KLIX.TO.W.0158.000000T0000Z-111116T0830Z/
WALTHALL MS-
232 AM CST WED NOV 16 2011

...THE TORNADO WARNING FOR CENTRAL WALTHALL COUNTY HAS EXPIRED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 AM CST WEDNESDAY MORNING
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

LAT...LON 3124 9007 3122 9006 3113 9026 3122 9026
      3131 9015
TIME...MOT...LOC 0801Z 229DEG 33KT 3120 9020

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 16, 3:25 AM CST	Tornado Warning	LIX	Walthall	35 min
Nov 16, 6:15 AM CST	Severe Thunderstorm Warning	LIX	Hancock, Pearl River	60 min
Nov 16, 7:34 AM CST	Tornado Warning	LIX	Hancock, Harrison	41 min

Nearby

Tornado Warnings in Mississippi, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.