Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 95, NWS Lake Charles, LA

May 29, 2021Allen Parish, Evangeline Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at May 29, 2021, 4:23 PM CDT for Allen Parish, Evangeline 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: May 29, 2021, 4:23 PM CDT (21:23 UTC)
Expired: May 29, 2021, 4:41 PM CDT
In force: 18 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Allen Parish, LA, Evangeline Parish, LA

The radar

The Ft Polk radar (KPOE), 64 km from the middle of the area, began a volume at 21:22 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, 9.4 hours before the alert went out and 81 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: 1233 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 913 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 35 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

001 
WUUS54 KLCH 292123
SVRLCH
LAC003-039-292200-
/O.NEW.KLCH.SV.W.0095.210529T2123Z-210529T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lake Charles LA
423 PM CDT Sat May 29 2021

The National Weather Service in Lake Charles has issued a

* Severe Thunderstorm Warning for...
  West central Evangeline Parish in central Louisiana...
  East central Allen Parish in southwestern Louisiana...

* Until 500 PM CDT.

* At 423 PM CDT, a severe thunderstorm was located over Bond, or 7
  miles northeast of Oberlin, moving southeast at 5 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Bond.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3067 9271 3073 9266 3068 9249 3055 9262
TIME...MOT...LOC 2123Z 308DEG 6KT 3067 9265 

HAIL...1.00IN
WIND...<50MPH
 
$$

Jones

1 follow-up statement

274 
WWUS54 KLCH 292141
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
441 PM CDT Sat May 29 2021

LAC003-039-292151-
/O.CAN.KLCH.SV.W.0095.000000T0000Z-210529T2200Z/
Evangeline LA-Allen LA-
441 PM CDT Sat May 29 2021

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL EVANGELINE AND
EAST CENTRAL ALLEN PARISHES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.  However heavy rain is
still possible with this thunderstorm.

LAT...LON 3067 9271 3073 9266 3068 9249 3055 9262
TIME...MOT...LOC 2140Z 308DEG 6KT 3065 9262 

$$

Jones

The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 12:36 PM CDT	Flash Flood Warning	LCH	Calcasieu	3 hr
May 29, 1:41 PM CDT	Special Weather Statement	LCH	Cameron	34 min
May 29, 1:44 PM CDT	Special Weather Statement	LCH	Vermilion	31 min
May 29, 2:15 PM CDT	Special Weather Statement	LCH	Vermilion	30 min
May 29, 3:18 PM CDT	Special Weather Statement	LCH	Calcasieu	27 min
May 29, 3:21 PM CDT	Special Weather Statement	LCH	Beauregard	24 min
May 29, 3:27 PM CDT	Severe Thunderstorm Warning	LCH	Beauregard	18 min
May 29, 3:36 PM CDT	Special Weather Statement	LCH	Beauregard	24 min
May 29, 3:47 PM CDT	Special Weather Statement	LCH	Cameron	28 min
May 29, 3:55 PM CDT	Special Weather Statement	LCH	Allen	35 min
May 29, 4:06 PM CDT	Special Weather Statement	LCH	Allen	24 min
May 29, 4:24 PM CDT	Special Weather Statement	LCH	Cameron	51 min
May 29, 5:53 PM CDT	Special Marine Warning	LCH		55 min

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.