Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 82, NWS Lake Charles, LA

May 11, 2021Iberia Parish, Saint Martin Parish, St. Mary Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at May 11, 2021, 7:28 PM CDT for Iberia Parish, Saint Martin Parish, St. Mary Parish, Louisiana. It was in force for 31 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 11, 2021, 7:28 PM CDT (00:28 UTC)
Expired: May 11, 2021, 7:59 PM CDT
In force: 31 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Iberia Parish, LA, Saint Martin Parish, LA, St. Mary Parish, LA

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 0.5 hours before the alert went out and 153 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: 2262 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 759 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 12.5

Open this sounding in Storm Lab

The text

As transmitted.

030 
WUUS54 KLCH 120028
SVRLCH
LAC045-099-101-120115-
/O.NEW.KLCH.SV.W.0082.210512T0028Z-210512T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lake Charles LA
728 PM CDT Tue May 11 2021

The National Weather Service in Lake Charles has issued a

* Severe Thunderstorm Warning for...
  Northeastern Iberia Parish in south central Louisiana...
  North central St. Mary Parish in south central Louisiana...
  Central St. Martin Parish in south central Louisiana...

* Until 815 PM CDT.

* At 727 PM CDT, a severe thunderstorm was located over Jeanerette,
  moving northeast at 15 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Jeanerette, Sorrel and Lake Fausse Pointe. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2983 9169 2993 9177 3017 9159 2996 9136
TIME...MOT...LOC 0027Z 235DEG 13KT 2994 9168 

HAIL...1.00IN
WIND...60MPH
 
$$

24

1 follow-up statement

102 
WWUS54 KLCH 120059
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
759 PM CDT Tue May 11 2021

LAC045-099-101-120109-
/O.CAN.KLCH.SV.W.0082.000000T0000Z-210512T0115Z/
Iberia LA-St. Mary LA-St. Martin LA-
759 PM CDT Tue May 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN IBERIA...NORTH
CENTRAL ST. MARY AND CENTRAL ST. MARTIN 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.

LAT...LON 2983 9169 2993 9177 3017 9159 2996 9136
TIME...MOT...LOC 0058Z 235DEG 13KT 3001 9157 

$$

24

The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 7:23 PM CDT	Severe Thunderstorm Warning	LCH	Calcasieu	37 min
May 11, 7:46 PM CDT	Special Weather Statement	LCH	Acadia	44 min
May 11, 7:56 PM CDT	Special Weather Statement	LCH	Jefferson Davis	34 min
May 11, 7:58 PM CDT	Special Weather Statement	LCH	Calcasieu	47 min
May 11, 8:06 PM CDT	Special Weather Statement	LCH	Beauregard	39 min
May 11, 8:16 PM CDT	Special Weather Statement	LCH	Calcasieu	29 min
May 11, 8:31 PM CDT	Special Weather Statement	LCH	Allen, Rapides	44 min
May 11, 8:32 PM CDT	Special Marine Warning	LCH		28 min
May 11, 8:45 PM CDT	Special Weather Statement	LCH	Cameron	45 min
May 11, 8:58 PM CDT	Special Marine Warning	LCH		47 min
May 11, 9:18 PM CDT	Special Weather Statement	LCH	Evangeline, Jefferson Davis	42 min
May 11, 9:32 PM CDT	Flash Flood Warning	LCH	Calcasieu	3 hr
May 11, 9:36 PM CDT	Flash Flood Warning	LCH	Acadia, Iberia, Jefferson Davis, Lafayette, Saint Landry, Saint Martin and 1 more	4 hr
May 11, 9:39 PM CDT	Special Weather Statement	LCH	Cameron	51 min
May 11, 10:19 PM CDT	Special Weather Statement	LCH	Lafayette, Vermilion	41 min
May 11, 10:59 PM CDT	Special Marine Warning	LCH		61 min
May 11, 11:13 PM CDT	Special Weather Statement	LCH	Saint Martin	47 min
May 11, 11:49 PM CDT	Severe Thunderstorm Warning	LCH	Saint Martin, St. Mary	41 min
May 12, 1:38 AM CDT	Areal Flood Warning	LCH	Acadia, Iberia, Jefferson Davis, Lafayette, Saint Landry, Saint Martin and 2 more	3 hr
May 12, 11:16 AM CDT	River Flood Warning	LCH	Acadia, Allen, Evangeline, Jefferson Davis	4 days
May 12, 3:22 PM CDT	River Flood Warning	LCH	Acadia, Evangeline, Saint Landry	56 hr
May 12, 3:22 PM CDT	River Flood Warning	LCH	Acadia, Jefferson Davis, Vermilion	31 days

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.