Alert archive / Louisiana / Tornado Warnings in 2015

Tornado Warning 29, NWS Lake Charles, LA

December 21, 2015Avoyelles Parish, Rapides Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Dec 21, 2015, 6:33 PM CST for Avoyelles Parish, Rapides Parish, Louisiana. It was in force for 42 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Dec 21, 2015, 6:33 PM CST (00:33 UTC)
Expired: Dec 21, 2015, 7:15 PM CST
In force: 42 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Avoyelles Parish, LA, Rapides Parish, LA

The radar

The Ft Polk radar (KPOE), 79 km from the middle of the area, began a volume at 00:32 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.

What was reported inside it

Time	Report	Where	Remark
Dec 21, 6:38 PM CST	TORNADO 1	5 Ene Woodworth, LA	A SECOND TORNADO TOUCHED DOWN...WHICH WAS VISUALLY SEEN AND PHOTOGRAPHED BY SEVERAL PEOPLE. THE TORNADO TOUCHED DOWNON HIGHWAY 71...LESS THAN A MILE NORTH OF LSU ALEXANDRIA. SEVERAL TREES WERE UPROOTED AND SEVERAL MOBILE HOMES RECEIVED MINOR DAMAGE.
Dec 21, 6:53 PM CST	TSTM WND DMG	6 Ene Woodworth, LA	911 CALL CENTER REPORTS TREES DOWN AND A CAR DAMAGED BY DEBRIS ON HWY 71 NORTH OF LA 3170

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 0.6 hours before the alert went out and 171 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: 1729 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 530 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 157 m²/s²
0-3 km storm-relative helicity: 173 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 6.3

Open this sounding in Storm Lab

The text

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

935 
WFUS54 KLCH 220033
TORLCH
LAC009-079-220115-
/O.NEW.KLCH.TO.W.0029.151222T0033Z-151222T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
633 PM CST MON DEC 21 2015

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES  HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN RAPIDES PARISH IN CENTRAL LOUISIANA...
  NORTHWESTERN AVOYELLES PARISH IN CENTRAL LOUISIANA...

* UNTIL 715 PM CST
    
* AT 633 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 7 MILES SOUTH OF ALEXANDRIA...MOVING NORTHEAST
  AT 25 MPH.

  HAZARD...TORNADO. 

  SOURCE...RADAR INDICATED ROTATION. 

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. 
           DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE 
           DAMAGE IS LIKELY. 

* THIS DANGEROUS STORM WILL BE NEAR...
  KOLIN AROUND 655 PM CST.
  LIBUSE AROUND 700 PM CST.
  DEVILLE AND HOLLOWAY AROUND 715 PM CST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3147 9216 3146 9217 3145 9215 3143 9216
      3141 9215 3139 9212 3138 9212 3137 9209
      3135 9208 3114 9247 3124 9253 3147 9217
TIME...MOT...LOC 0033Z 238DEG 23KT 3119 9246 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

RUA

2 follow-up statements

432 
WWUS54 KLCH 220104
SVSLCH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
704 PM CST MON DEC 21 2015

LAC009-079-220115-
/O.CON.KLCH.TO.W.0029.000000T0000Z-151222T0115Z/
RAPIDES LA-AVOYELLES LA-
704 PM CST MON DEC 21 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CST FOR EAST
CENTRAL RAPIDES AND NORTHWESTERN AVOYELLES PARISHES...
    
AT 703 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 5 MILES WEST OF CENTERPOINT...OR NEAR EFFIE...MOVING
EAST AT 25 MPH.

HAZARD...TORNADO. 

SOURCE...RADAR INDICATED ROTATION. 

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
         SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE 
         TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE DAMAGE IS 
         LIKELY. 

THIS DANGEROUS STORM WILL BE NEAR...
  DEVILLE AROUND 715 PM CST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3124 9229 3133 9235 3144 9216 3143 9216
      3141 9215 3139 9212 3138 9212 3137 9209
      3135 9208
TIME...MOT...LOC 0103Z 248DEG 24KT 3126 9225 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

RUA

469 
WWUS54 KLCH 220113
SVSLCH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
713 PM CST MON DEC 21 2015

LAC009-079-220122-
/O.EXP.KLCH.TO.W.0029.000000T0000Z-151222T0115Z/
RAPIDES LA-AVOYELLES LA-
713 PM CST MON DEC 21 2015

...THE TORNADO WARNING FOR EAST CENTRAL RAPIDES AND NORTHWESTERN
AVOYELLES PARISHES WILL EXPIRE AT 715 PM CST...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 3124 9229 3133 9235 3144 9216 3143 9216
      3141 9215 3139 9212 3138 9212 3137 9209
      3135 9208
TIME...MOT...LOC 0111Z 238DEG 23KT 3126 9225 

$$

RUA

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 21, 7:00 PM CST	Marine Dense Fog Advisory	LCH		26 hr
Dec 21, 9:01 PM CST	Dense Fog Advisory	LCH	Allen, Avoyelles, Beauregard, Cameron, Evangeline, Lafayette and 4 more	15 hr
Dec 22, 2:59 PM CST	Special Marine Warning	LCH		46 min
Dec 22, 3:35 PM CST	Special Weather Statement	LCH	Cameron	25 min
Dec 22, 3:38 PM CST	Special Marine Warning	LCH		67 min
Dec 22, 4:10 PM CST	Special Weather Statement	LCH	Acadia, Cameron, Jefferson Davis, Lafayette, Saint Martin, Vermilion	95 min
Dec 22, 5:25 PM CST	Special Weather Statement	LCH	Allen, Avoyelles, Evangeline, Saint Landry	95 min

Nearby

Tornado Warnings in Louisiana, 2015 Every tornado warning in 2015 Tornadoes in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.