Alert archive / Louisiana / Tornado Warnings in 2021

Tornado Warning 12, NWS Lake Charles, LA

April 10, 2021Avoyelles Parish, Saint Landry Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Apr 10, 2021, 1:40 AM CDT for Avoyelles Parish, Saint Landry Parish, Louisiana. It was in force for 18 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: Apr 10, 2021, 1:40 AM CDT (06:40 UTC)
Expired: Apr 10, 2021, 1:58 AM CDT
In force: 18 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Avoyelles Parish, LA, Saint Landry Parish, LA

The radar

The Ft Polk radar (KPOE), 117 km from the middle of the area, began a volume at 06:40 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
Apr 9, 10:25 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 10, 12:16 AM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 6.7 hours before the alert went out and 154 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: 2773 J/kg
Mixed-layer CIN: -94 J/kg
Mixed-layer LCL: 733 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 149 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 7.7

Open this sounding in Storm Lab

The text

As transmitted.

821 
WFUS54 KLCH 100640
TORLCH
LAC009-097-100715-
/O.NEW.KLCH.TO.W.0012.210410T0640Z-210410T0715Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lake Charles LA
140 AM CDT Sat Apr 10 2021

The National Weather Service in Lake Charles has issued a

* Tornado Warning for...
  Southeastern Avoyelles Parish in central Louisiana...
  Northeastern St. Landry Parish in central Louisiana...

* Until 215 AM CDT.
    
* At 140 AM CDT, a severe thunderstorm capable of producing a tornado
  was located near Palmetto, moving northeast at 30 mph.

  HAZARD...Tornado and quarter size hail.

  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...
  Bayou Current around 155 AM CDT.

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 3097 9181 3088 9180 3087 9180 3086 9182
      3084 9180 3081 9181 3077 9176 3075 9175
      3074 9176 3072 9174 3070 9194 3080 9200
TIME...MOT...LOC 0640Z 242DEG 27KT 3078 9191 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

24

1 follow-up statement

783 
WWUS54 KLCH 100658
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
158 AM CDT Sat Apr 10 2021

LAC009-097-100708-
/O.CAN.KLCH.TO.W.0012.000000T0000Z-210410T0715Z/
Avoyelles LA-St. Landry LA-
158 AM CDT Sat Apr 10 2021

...THE TORNADO WARNING FOR SOUTHEASTERN AVOYELLES AND NORTHEASTERN
ST. LANDRY PARISHES IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 700 AM CDT for central
Louisiana.

LAT...LON 3097 9181 3088 9180 3087 9180 3086 9182
      3084 9180 3081 9181 3077 9176 3075 9175
      3074 9176 3072 9174 3070 9194 3080 9200
TIME...MOT...LOC 0655Z 242DEG 27KT 3084 9177 

$$

24

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 9:08 PM CDT	Special Weather Statement	LCH	Rapides	82 min
Apr 9, 9:24 PM CDT	Severe Thunderstorm Warning	LCH	Rapides	81 min
Apr 10, 12:28 AM CDT	Severe Thunderstorm Warning	LCH	Avoyelles, Rapides	47 min
Apr 10, 12:52 AM CDT	Special Weather Statement	LCH	Vernon	38 min
Apr 10, 12:53 AM CDT	Tornado Warning	LCH	Avoyelles, Rapides	22 min
Apr 10, 1:10 AM CDT	Tornado Warning	LCH	Avoyelles	35 min
Apr 10, 1:13 AM CDT	Severe Thunderstorm Warning	LCH	Avoyelles, Evangeline, Saint Landry	47 min
Apr 10, 1:22 AM CDT	Tornado Warning	LCH	Avoyelles, Saint Landry	23 min
Apr 10, 1:34 AM CDT	Severe Thunderstorm Warning	LCH	Saint Landry	41 min
Apr 10, 1:42 AM CDT	Tornado Warning	LCH	Saint Landry	33 min
Apr 10, 2:11 AM CDT	Tornado Warning	LCH	Saint Landry	34 min
Apr 10, 4:11 AM CDT	Severe Thunderstorm Warning	LCH	Beauregard, Calcasieu	49 min
Apr 10, 4:58 AM CDT	Special Weather Statement	LCH	Lafayette, Saint Martin, Vermilion	62 min
Apr 10, 5:00 AM CDT	Special Weather Statement	LCH	Calcasieu	60 min
Apr 10, 6:01 AM CDT	Severe Thunderstorm Warning	LCH	Calcasieu, Cameron, Jefferson Davis	29 min
Apr 10, 6:05 AM CDT	Special Weather Statement	LCH	Iberia, St. Mary, Vermilion	40 min
Apr 10, 6:51 AM CDT	Special Marine Warning	LCH		54 min
Apr 10, 6:55 AM CDT	Special Weather Statement	LCH	Vermilion	50 min
Apr 10, 10:44 AM CDT	Severe Thunderstorm Warning	LCH	St. Mary	31 min
Apr 10, 11:14 AM CDT	Severe Thunderstorm Warning	LCH	St. Mary	12 min
Apr 10, 11:56 AM CDT	River Flood Warning	LCH	Beauregard, Calcasieu	3 hr

Nearby

Tornado Warnings in Louisiana, 2021 Every tornado warning in 2021 Tornadoes in 2021

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.