Alert archive / Mississippi / Tornado Warnings in 2011

Tornado Warning 124, NWS New Orleans, LA

September 3, 2011Jackson County, Mississippi

NWS New Orleans, LA issued this tornado warning at Sep 3, 2011, 2:54 PM CDT for Jackson County, Mississippi. It was in force for 36 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
Sep 3, 2011, 2:54 PM CDT (19:54 UTC)
Expired
Sep 3, 2011, 3:30 PM CDT
In force
36 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon

County Jackson County, MS

The radar

The Mobile radar (KMOB), 47 km from the middle of the area, began a volume at 19:57 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

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

IssuedProductOfficeLasted
Sep 3, 9:41 AM CDTTornado WatchSPC12 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.9 hours before the alert went out and 104 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 2011-09-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 850 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 12:00Z on 2011-09-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 286 square meters per square second.19395878Sfc1 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
850 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
477 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
286 m²/s²
0-3 km storm-relative helicity
260 m²/s²
Significant tornado parameter
1.0
Supercell composite
7.0

Open this sounding in Storm Lab

The text

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

280 
WFUS54 KLIX 031954
TORLIX
MSC059-032030-
/O.NEW.KLIX.TO.W.0124.110903T1954Z-110903T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
254 PM CDT SAT SEP 3 2011

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN JACKSON COUNTY IN SOUTHERN MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...PASCAGOULA...MOSS POINT...
  ESCATAWPA...

* UNTIL 330 PM CDT

* AT 247 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A 
  STORM CAPABLE OF PRODUCING A TORNADO NEAR PASCAGOULA...MOVING      
  NORTHWEST AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO      
  GAUTIER AND VANCLEAVE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

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 1000 PM CDT SATURDAY EVENING
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

&&

LAT...LON 3033 8852 3033 8856 3035 8859 3035 8866
      3049 8888 3072 8888 3057 8865 3042 8844
TIME...MOT...LOC 1953Z 129DEG 30KT 3041 8860

$$

98/SO

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 3, 12:55 AM CDTTornado WarningLIXHancock, Harrison35 min
Sep 3, 1:05 AM CDTTornado WarningLIXHarrison, Jackson25 min
Sep 3, 1:36 AM CDTTornado WarningLIXHarrison, Jackson24 min
Sep 3, 5:24 AM CDTRiver Flood WarningLIXHarrison4 days
Sep 3, 5:33 AM CDTRiver Flood WarningLIXHarrison3 days
Sep 3, 6:17 AM CDTTornado WarningLIXHancock, Pearl River43 min
Sep 3, 6:26 AM CDTTornado WarningLIXHancock, Harrison, Pearl River34 min
Sep 3, 6:58 AM CDTTornado WarningLIXHancock, Pearl River, Walthall47 min
Sep 3, 7:23 AM CDTFlash Flood WarningLIXHancock, Pearl River3 hr
Sep 3, 7:44 AM CDTTornado WarningLIXHancock, Pearl River61 min
Sep 3, 8:28 AM CDTTornado WarningLIXHarrison, Jackson47 min
Sep 3, 8:42 AM CDTTornado WarningLIXHancock, Harrison, Pearl River63 min
Sep 3, 9:13 AM CDTTornado WarningLIXHarrison, Jackson47 min
Sep 3, 9:23 AM CDTRiver Flood WarningLIXHarrison4 days
Sep 3, 9:35 AM CDTRiver Flood WarningLIXHancock37 hr
Sep 3, 10:17 AM CDTTornado WarningLIXHarrison, Jackson43 min
Sep 3, 11:22 AM CDTRiver Flood WarningLIXPearl River72 hr
Sep 3, 11:31 AM CDTRiver Flood WarningLIXPearl River3 days
Sep 3, 12:11 PM CDTTornado WarningLIXJackson49 min
Sep 3, 12:59 PM CDTTornado WarningLIXJackson46 min
Sep 3, 1:29 PM CDTTornado WarningLIXAmite31 min
Sep 3, 3:42 PM CDTFlash Flood WarningLIXJackson3 hr
Sep 3, 4:51 PM CDTTornado WarningLIXJackson24 min

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; radar from the NEXRAD Level II archive.