Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 105, NWS Lake Charles, LA

July 27, 2021Calcasieu Parish, Cameron Parish, Louisiana; Orange County, Texas

NWS Lake Charles, LA issued this severe thunderstorm warning at Jul 27, 2021, 6:28 PM CDT for Calcasieu Parish, Cameron Parish, Louisiana; Orange County, Texas. It was in force for 21 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: Jul 27, 2021, 6:28 PM CDT (23:28 UTC)
Expired: Jul 27, 2021, 6:49 PM CDT
In force: 21 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Calcasieu Parish, LA, Cameron Parish, LA, Orange County, TX

The radar

The Lake Charles radar (KLCH), 33 km from the middle of the area, began a volume at 23:32 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.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 11.5 hours before the alert went out and 35 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: 2394 J/kg
Mixed-layer CIN: -67 J/kg
Mixed-layer LCL: 801 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

723 
WUUS54 KLCH 272328
SVRLCH
LAC019-023-TXC361-280015-
/O.NEW.KLCH.SV.W.0105.210727T2328Z-210728T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lake Charles LA
628 PM CDT Tue Jul 27 2021

The National Weather Service in Lake Charles has issued a

* Severe Thunderstorm Warning for...
  Northwestern Cameron Parish in southwestern Louisiana...
  Southwestern Calcasieu Parish in southwestern Louisiana...
  East central Orange County in southeastern Texas...

* Until 715 PM CDT.

* At 628 PM CDT, a severe thunderstorm was located near Vinton,
  moving southwest at 5 mph.

  HAZARD...60 mph wind gusts and nickel size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Orange, Vinton, Toomey and Edgerly. 

This includes the following highways...
 Interstate 10 in Texas between mile markers 880 and 877.
 Interstate 10 in Louisiana between mile markers 1 and 16.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows!

&&

LAT...LON 3028 9351 3012 9338 2993 9361 3015 9379
TIME...MOT...LOC 2328Z 054DEG 6KT 3016 9352 

HAIL...0.88IN
WIND...60MPH
 
$$

Donato

1 follow-up statement

658 
WWUS54 KLCH 272349
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
649 PM CDT Tue Jul 27 2021

LAC019-023-TXC361-272358-
/O.CAN.KLCH.SV.W.0105.000000T0000Z-210728T0015Z/
Cameron LA-Calcasieu LA-Orange TX-
649 PM CDT Tue Jul 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CAMERON...
SOUTHWESTERN CALCASIEU PARISHES IN SOUTHWESTERN LOUISIANA AND EAST
CENTRAL ORANGE COUNTIES 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 small hail and
heavy rain are still possible with this thunderstorm.

LAT...LON 3028 9351 3012 9338 2993 9361 3015 9379
TIME...MOT...LOC 2345Z 054DEG 6KT 3014 9355 

$$

Donato

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 11:11 PM CDT	Special Weather Statement	LCH	Vermilion	49 min
Jul 27, 12:45 AM CDT	Special Weather Statement	LCH	Cameron	45 min
Jul 27, 2:24 AM CDT	Special Weather Statement	LCH	Vermilion	36 min
Jul 27, 2:33 PM CDT	Special Weather Statement	LCH	Rapides	42 min
Jul 27, 3:19 PM CDT	Special Weather Statement	LCH	Avoyelles, Rapides, Vernon	56 min
Jul 27, 4:20 PM CDT	Special Weather Statement	LCH	Vernon	25 min
Jul 27, 4:35 PM CDT	Special Weather Statement	LCH	Evangeline	25 min
Jul 27, 5:45 PM CDT	Special Weather Statement	LCH	Calcasieu	45 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2021 Severe Thunderstorm Warnings in Texas, 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.