Alert archive / Mississippi / Tornado Warnings in 2011

Tornado Warning 21, NWS New Orleans, LA

March 9, 2011Pike County, Walthall County, Mississippi

NWS New Orleans, LA issued this tornado warning at Mar 9, 2011, 5:23 AM CST for Pike County, Walthall County, Mississippi. It was in force for 37 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
Mar 9, 2011, 5:23 AM CST (11:23 UTC)
Expired
Mar 9, 2011, 6:00 AM CST
In force
37 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon

Counties Pike County, MS, Walthall County, MS

The watch it was issued in

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

IssuedProductOfficeLasted
Mar 9, 2:39 AM CSTTornado WatchSPC5 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 11.4 hours before the alert went out and 110 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 00:00Z on 2011-03-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 841 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2011-03-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 652 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
841 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
473 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
652 m²/s²
0-3 km storm-relative helicity
774 m²/s²
Significant tornado parameter
4.0
Supercell composite
24.8

Open this sounding in Storm Lab

The text

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

885 
WFUS54 KLIX 091123
TORLIX
MSC113-147-091230-
/O.NEW.KLIX.TO.W.0021.110309T1123Z-110309T1230Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
523 AM CST WED MAR 9 2011

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

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

* UNTIL 630 AM CST

* AT 519 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9 MILES WEST OF
  TYLERTOWN...OR 13 MILES SOUTHEAST OF MCCOMB...MOVING EAST AT 40
  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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 AM CST WEDNESDAY MORNING
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

&&

LAT...LON 3125 9003 3124 9002 3119 9002 3118 9000
      3114 8999 3114 8994 3110 8992 3101 9031
      3123 9040 3133 9003
TIME...MOT...LOC 1123Z 252DEG 35KT 3114 9025

$$
1 follow-up statement
515 
WWUS54 KLIX 091200
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
600 AM CST WED MAR 9 2011

MSC113-147-091211-
/O.CAN.KLIX.TO.W.0021.000000T0000Z-110309T1230Z/
PIKE MS-WALTHALL MS-
600 AM CST WED MAR 9 2011

...THE TORNADO WARNING FOR CENTRAL WALTHALL AND SOUTHEASTERN PIKE
COUNTIES IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 AM CST WEDNESDAY MORNING
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

LAT...LON 3125 9003 3124 9002 3119 9002 3118 9000
      3114 8999 3114 8994 3110 8992 3101 9031
      3123 9040 3133 9003
TIME...MOT...LOC 1201Z 252DEG 35KT 3125 8984

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 8, 8:33 PM CSTRiver Flood WarningLIXHarrison61 hr
Mar 8, 8:40 PM CSTRiver Flood WarningLIXHarrison46 hr
Mar 8, 8:50 PM CSTRiver Flood WarningLIXHarrison24 hr
Mar 8, 10:12 PM CSTRiver Flood WarningLIXPike23 hr
Mar 9, 12:06 AM CSTRiver Flood WarningLIXJackson12 days
Mar 9, 3:48 AM CSTTornado WarningLIXAmite, Pike, Walthall27 min
Mar 9, 5:10 AM CSTTornado WarningLIXHancock, Pearl River50 min
Mar 9, 5:45 AM CSTTornado WarningLIXHancock, Pearl River45 min
Mar 9, 5:56 AM CSTTornado WarningLIXHancock, Pearl River34 min
Mar 9, 6:35 AM CSTTornado WarningLIXHancock, Pearl River55 min
Mar 9, 6:42 AM CSTSevere Thunderstorm WarningLIXHancock, Harrison, Jackson63 min
Mar 9, 7:06 AM CSTSevere Thunderstorm WarningLIXHarrison, Jackson54 min
Mar 9, 7:24 AM CSTTornado WarningLIXHancock, Harrison, Jackson66 min
Mar 9, 7:42 AM CSTFlash Flood WarningLIXHancock, Harrison2 hr
Mar 9, 8:34 AM CSTFlash Flood WarningLIXJackson2 hr
Mar 9, 8:48 AM CSTSevere Thunderstorm WarningLIXJackson27 min
Mar 9, 9:20 AM CSTSevere Thunderstorm WarningLIXJackson25 min
Mar 9, 12:05 PM CSTRiver Flood WarningLIXPike, Walthall58 hr
Mar 9, 5:28 PM CSTRiver Flood WarningLIXPearl River3 hr

Nearby

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