Alert archive / Louisiana / Tornado Warnings in 2011

Tornado Warning 1, NWS New Orleans, LA

January 1, 2011East Feliciana Parish, Saint Helena Parish, Louisiana; Amite County, Pike County, Mississippi

NWS New Orleans, LA issued this tornado warning at Jan 1, 2011, 4:50 AM CST for East Feliciana Parish, Saint Helena Parish, Louisiana; Amite County, Pike County, Mississippi. It was in force for 70 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: Jan 1, 2011, 4:50 AM CST (10:50 UTC)
Expired: Jan 1, 2011, 6:00 AM CST
In force: 70 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon

Counties East Feliciana Parish, LA, Saint Helena Parish, LA, Amite County, MS, Pike County, MS

The watch it was issued in

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

Issued	Product	Office	Lasted
Jan 1, 3:10 AM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 10.8 hours before the alert went out and 120 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: 1298 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 483 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 329 m²/s²
0-3 km storm-relative helicity: 345 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 11.8

Open this sounding in Storm Lab

The text

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

370 
WFUS54 KLIX 011050
TORLIX
LAC037-091-MSC005-113-011145-
/O.NEW.KLIX.TO.W.0001.110101T1050Z-110101T1145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
450 AM CST SAT JAN 1 2011

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN EAST FELICIANA PARISH IN SOUTHEAST LOUISIANA...
  NORTHERN ST. HELENA PARISH IN SOUTHEAST LOUISIANA...
  SOUTHEASTERN AMITE COUNTY IN SOUTHERN MISSISSIPPI...
  SOUTHWESTERN PIKE COUNTY IN SOUTHERN MISSISSIPPI...

* UNTIL 545 AM CST

* AT 449 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  DARLINGTON...OR 9 MILES NORTHWEST OF GREENSBURG...MOVING NORTHEAST
  AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  EASLEYVILLE AND GILLSBERG

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 1000 AM CST SATURDAY MORNING
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

&&

LAT...LON 3111 9039 3100 9054 3100 9056 3099 9056
      3083 9079 3090 9091 3113 9072
TIME...MOT...LOC 1050Z 227DEG 32KT 3093 9076

$$

CAB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 1, 4:50 AM CST	Tornado Warning	LIX		55 min
Jan 1, 5:19 AM CST	Tornado Warning	LIX	Lafourche	63 days
Jan 1, 7:28 AM CST	Special Marine Warning	LIX		62 min
Jan 1, 7:34 AM CST	Marine Dense Fog Advisory	LIX		4 hr
Jan 1, 7:50 AM CST	Special Marine Warning	LIX		25 min
Jan 1, 8:32 AM CST	Special Marine Warning	LIX		88 min
Jan 1, 9:13 AM CST	Special Marine Warning	LIX		92 min
Jan 1, 9:14 AM CST	Special Marine Warning	LIX		91 min
Jan 1, 3:15 PM CST	Small Craft Advisory	LIX		12 hr

Nearby

Tornado Warnings in Louisiana, 2011 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.