Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 32, NWS Lake Charles, LA

April 10, 2021Calcasieu Parish, Cameron Parish, Jefferson Davis Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Apr 10, 2021, 6:01 AM CDT for Calcasieu Parish, Cameron Parish, Jefferson Davis Parish, Louisiana. It was in force for 29 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, 6:01 AM CDT (11:01 UTC)
Expired: Apr 10, 2021, 6:30 AM CDT
In force: 29 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Calcasieu Parish, LA, Cameron Parish, LA, Jefferson Davis Parish, LA

The radar

The Lake Charles radar (KLCH), 16 km from the middle of the area, began a volume at 11:02 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 10, 12:16 AM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 11.0 hours before the alert went out and 15 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.

679 
WUUS54 KLCH 101101
SVRLCH
LAC019-023-053-101130-
/O.NEW.KLCH.SV.W.0032.210410T1101Z-210410T1130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lake Charles LA
601 AM CDT Sat Apr 10 2021

The National Weather Service in Lake Charles has issued a

* Severe Thunderstorm Warning for...
  Northeastern Cameron Parish in southwestern Louisiana...
  South central Jefferson Davis Parish in southwestern Louisiana...
  Southeastern Calcasieu Parish in southwestern Louisiana...

* Until 630 AM CDT.

* At 601 AM CDT, a severe thunderstorm was located near Grand Lake,
  moving east at 35 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Grand Lake, Lacassine National Wildlife Refuge, Heberts Marina,
  Sweet Lake, Gibbstown and Hacketts Corner.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 2991 9324 2993 9324 2997 9327 3002 9327
      3004 9328 3005 9329 3012 9327 3008 9286
      2981 9293
TIME...MOT...LOC 1101Z 283DEG 28KT 3002 9321 

HAIL...1.25IN
WIND...60MPH
 
$$

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, 1:40 AM CDT	Tornado Warning	LCH	Avoyelles, Saint Landry	18 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, 6:05 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

Severe Thunderstorm Warnings in Louisiana, 2021 Every severe thunderstorm warning 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.