Alert archive / Louisiana / Tornado Warnings in 2013

Tornado Warning 21, NWS Lake Charles, LA

December 21, 2013Rapides Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Dec 21, 2013, 4:58 PM CST for Rapides Parish, Louisiana. It was in force for 32 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: Dec 21, 2013, 4:58 PM CST (22:58 UTC)
Expired: Dec 21, 2013, 5:30 PM CST
In force: 32 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon

County Rapides Parish, LA

The radar

The Ft Polk radar (KPOE), 43 km from the middle of the area, began a volume at 22:59 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.

Issued	Product	Office	Lasted
Dec 21, 9:46 AM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 11.0 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: 509 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 558 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 165 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

915 
WFUS54 KLCH 212258
TORLCH
LAC079-212330-
/O.NEW.KLCH.TO.W.0021.131221T2258Z-131221T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
458 PM CST SAT DEC 21 2013

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL RAPIDES PARISH IN CENTRAL LOUISIANA...
  THIS INCLUDES GLENMORA...

* UNTIL 530 PM CST

* AT 455 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 7 MILES WEST OF
  GLENMORA...MOVING EAST AT 30 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO      
  MCNARY...GLENMORA...AND FOREST HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

NATIONAL WEATHER SERVICE RADAR INDICATES A TORNADO MAY FORM AT ANY
TIME. TAKE COVER NOW! ABANDON MOBILE HOMES AND VEHICLES. MOVE TO AN
INTERIOR ROOM OR HALLWAY ON THE LOWEST FLOOR AWAY FROM WINDOWS.

IF YOU ARE IN A MOBILE HOME...WHETHER IT IS TIED DOWN OR NOT...
EVACUATE IT AND FIND A MORE STURDY SHELTER. MOBILE HOMES CAN BE
PICKED UP OR TOSSED BY THE TORNADO.

&&

PLEASE REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE AT
337-477-5285 EXTENSION 1.

LAT...LON 3112 9245 3097 9244 3095 9248 3091 9248
      3090 9250 3090 9272 3089 9273 3089 9277
      3103 9279
TIME...MOT...LOC 2258Z 264DEG 25KT 3095 9267

$$

ERICKSON

1 follow-up statement

788 
WWUS54 KLCH 212319
SVSLCH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
519 PM CST SAT DEC 21 2013

LAC079-212330-
/O.CON.KLCH.TO.W.0021.000000T0000Z-131221T2330Z/
RAPIDES LA-
519 PM CST SAT DEC 21 2013

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM CST FOR SOUTH
CENTRAL RAPIDES PARISH...

AT 513 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A 
TORNADO ON RADAR.  THIS RADAR INDICATED TORNADO WAS LOCATED 5 MILES 
EAST OF GLENMORA..MOVING EAST AT 30 MPH.

THE TORNADO THREAT WILL BE EAST OF US HIGHWAY 165.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN A MOBILE HOME...WHETHER IT IS TIED DOWN OR NOT...
EVACUATE IT AND FIND A MORE STURDY SHELTER. MOBILE HOMES CAN BE
PICKED UP OR TOSSED BY THE TORNADO.

&&

LAT...LON 3105 9245 3097 9244 3095 9248 3091 9248
      3090 9250 3090 9263 3109 9256 3112 9245
TIME...MOT...LOC 2318Z 264DEG 25KT 3097 9249

$$

ERICKSON

The office that day

Everything else NWS Lake Charles, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 21, 5:24 AM CST	Wind Advisory	LCH	Allen, Avoyelles, Beauregard, Cameron, Evangeline, Lafayette and 4 more	13 hr
Dec 21, 2:49 PM CST	Severe Thunderstorm Warning	LCH	Beauregard, Vernon	56 min
Dec 21, 3:51 PM CST	Special Weather Statement	LCH	Allen, Beauregard, Rapides, Vernon	54 min
Dec 21, 3:58 PM CST	Special Marine Warning	LCH		92 min
Dec 21, 4:23 PM CST	Special Weather Statement	LCH	Calcasieu	52 min
Dec 21, 4:33 PM CST	Tornado Warning	LCH	Rapides, Vernon	27 min
Dec 21, 4:42 PM CST	Special Weather Statement	LCH	Allen, Avoyelles, Evangeline, Jefferson Davis, Rapides	63 min
Dec 21, 5:17 PM CST	Special Weather Statement	LCH	Cameron	58 min

Nearby

Tornado Warnings in Louisiana, 2013 Every tornado warning in 2013 Tornadoes in 2013

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.