Alert archive / Louisiana / Tornado Warnings in 2020

Tornado Warning 82, NWS Lake Charles, LA

December 23, 2020Beauregard Parish, Vernon Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Dec 23, 2020, 4:36 PM CST for Beauregard Parish, Vernon Parish, Louisiana. It was in force for 13 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 23, 2020, 4:36 PM CST (22:36 UTC)
Expired: Dec 23, 2020, 4:49 PM CST
In force: 13 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Beauregard Parish, LA, Vernon Parish, LA

The radar

The Ft Polk radar (KPOE), 63 km from the middle of the area, began a volume at 22:36 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

Lake Charles Mun, LA (KLCH), launched 12:00Z, 10.6 hours before the alert went out and 82 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 660 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 252 m²/s²
0-3 km storm-relative helicity: 283 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

882 
WFUS54 KLCH 232236
TORLCH
LAC011-115-232300-
/O.NEW.KLCH.TO.W.0082.201223T2236Z-201223T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lake Charles LA
436 PM CST Wed Dec 23 2020

The National Weather Service in Lake Charles has issued a

* Tornado Warning for...
  Northwestern Beauregard Parish in southwestern Louisiana...
  Southwestern Vernon Parish in west central Louisiana...

* Until 500 PM CST.
    
* At 435 PM CST, a severe thunderstorm capable of producing a tornado
  was located over Merryville, moving northeast at 20 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...
  De Ridder around 500 PM CST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to 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 3080 9321 3065 9349 3077 9359 3078 9358
      3079 9359 3080 9358 3081 9356 3082 9357
      3083 9355 3085 9357 3085 9356 3086 9356
      3099 9339
TIME...MOT...LOC 2235Z 233DEG 19KT 3077 9349 

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

$$

13

1 follow-up statement

632 
WWUS54 KLCH 232249
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
449 PM CST Wed Dec 23 2020

LAC011-115-232259-
/O.CAN.KLCH.TO.W.0082.000000T0000Z-201223T2300Z/
Beauregard LA-Vernon LA-
449 PM CST Wed Dec 23 2020

...THE TORNADO WARNING FOR NORTHWESTERN BEAUREGARD AND SOUTHWESTERN
VERNON PARISHES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

LAT...LON 3080 9321 3065 9349 3077 9359 3078 9358
      3079 9359 3080 9358 3081 9356 3082 9357
      3083 9355 3085 9357 3085 9356 3086 9356
      3099 9339
TIME...MOT...LOC 2248Z 233DEG 19KT 3082 9342 

$$

13

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 23, 3:48 AM CST	Gale Warning	LCH		38 hr
Dec 23, 3:48 AM CST	Low Water Advisory	LCH		30 hr
Dec 23, 3:48 AM CST	Small Craft Advisory	LCH		50 hr
Dec 23, 3:49 AM CST	Wind Advisory	LCH	Allen, Avoyelles, Beauregard, Cameron, Evangeline, Lafayette and 4 more	38 hr
Dec 23, 5:45 PM CST	Special Weather Statement	LCH	Vernon	45 min
Dec 23, 5:51 PM CST	Tornado Warning	LCH	Vernon	24 min

Nearby

Tornado Warnings in Louisiana, 2020 Every tornado warning in 2020 Tornadoes in 2020

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.