Alert archive / Mississippi / Tornado Warnings in 2011

Tornado Warning 157, NWS New Orleans, LA

September 19, 2011Harrison County, Jackson County, Mississippi

NWS New Orleans, LA issued this tornado warning at Sep 19, 2011, 2:27 PM CDT for Harrison County, Jackson County, Mississippi. It was in force for 33 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 19, 2011, 2:27 PM CDT (19:27 UTC)
Expired: Sep 19, 2011, 3:00 PM CDT
In force: 33 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon

Counties Harrison County, MS, Jackson County, MS

The radar

The Mobile radar (KMOB), 61 km from the middle of the area, began a volume at 19:31 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 nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.5 hours before the alert went out and 88 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: 2343 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 530 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 4.2

Open this sounding in Storm Lab

The text

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

086 
WFUS54 KLIX 191927
TORLIX
MSC047-059-192000-
/O.NEW.KLIX.TO.W.0157.110919T1927Z-110919T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
227 PM CDT MON SEP 19 2011

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL HARRISON COUNTY IN SOUTHERN MISSISSIPPI...
  WEST CENTRAL JACKSON COUNTY IN SOUTHERN MISSISSIPPI...

* UNTIL 300 PM CDT

* AT 220 PM CDT...LOCAL LAW ENFORCEMENT CONTINUED TO REPORT A        
  TORNADO ABOUT 5 MILES NORTH OF THE INTERSTATE 10 AND INTERSTATE    
  110 INTERCHANGE. THE TORNADO IS MOVING NORTHEAST AT 5 MPH.

* THE TORNADO WILL REMAIN OVER MAINLY RURAL AREAS OF HARRISON AND 
JACKSON COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3065 8890 3062 8875 3049 8886 3050 8894
TIME...MOT...LOC 1926Z 207DEG 5KT 3052 8888

$$

95/DM

1 follow-up statement

204 
WWUS54 KLIX 191953
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
253 PM CDT MON SEP 19 2011

MSC047-059-192003-
/O.EXP.KLIX.TO.W.0157.000000T0000Z-110919T2000Z/
JACKSON MS-HARRISON MS-
253 PM CDT MON SEP 19 2011

...THE TORNADO WARNING FOR EAST CENTRAL HARRISON AND WEST CENTRAL
JACKSON COUNTIES WILL EXPIRE AT 300 PM CDT...

THE STORM THAT PROMPTED THE WARNING HAS WEAKENED AND THE LATEST 
EYEWITNESS ACCOUNTS INDICATE THAT THE TORNADO HAS DISSIPATED.

LAT...LON 3065 8890 3062 8875 3049 8886 3050 8894
TIME...MOT...LOC 1953Z 207DEG 5KT 3055 8886

$$

95/DM

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 19, 12:51 PM CDT	Tornado Warning	LIX	Harrison	9 min
Sep 19, 2:03 PM CDT	Tornado Warning	LIX	Harrison, Jackson	27 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; radar from the NEXRAD Level II archive.