Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 119, NWS Lake Charles, LA

October 27, 20214 parishes in Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Oct 27, 2021, 3:30 PM CDT for 4 parishes in Louisiana. It was in force for 60 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
Oct 27, 2021, 3:30 PM CDT (20:30 UTC)
Expired
Oct 27, 2021, 4:30 PM CDT
In force
60 min
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 27, 7:55 AM CDTTornado WatchSPC9 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 8.5 hours before the alert went out and 157 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-pSkew-T log-p diagram, Lake Charles Mun, LA at 12:00Z on 2021-10-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1422 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 12:00Z on 2021-10-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 160 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1422 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
604 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
160 m²/s²
0-3 km storm-relative helicity
255 m²/s²
Significant tornado parameter
1.1
Supercell composite
7.1

Open this sounding in Storm Lab

The text

As transmitted.

554 
WUUS54 KLCH 272030
SVRLCH
LAC045-099-101-113-272130-
/O.NEW.KLCH.SV.W.0119.211027T2030Z-211027T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lake Charles LA
330 PM CDT Wed Oct 27 2021

The National Weather Service in Lake Charles has issued a

* Severe Thunderstorm Warning for...
  Iberia Parish in south central Louisiana...
  St. Mary Parish in south central Louisiana...
  Southeastern Vermilion Parish in southwestern Louisiana...
  Central St. Martin Parish in south central Louisiana...

* Until 430 PM CDT.

* At 330 PM CDT, severe thunderstorms were located along a line
  extending from near New Roads to near Catahoula to 13 miles east of
  Freshwater City, moving east at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  New Iberia, Morgan City, Catahoula, Franklin, Patterson,
  Jeanerette, Berwick, Burns Point, Belle River, Bayou Vista,
  Cypremort Point, Stephensville, Avery Island, Baldwin, Loreauville,
  Ellerslie, Patterson Memorial Airport, Butte La Rose, Lydia and
  Sorrel.

This includes Interstate 10 in Louisiana near mile marker 127.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 400 PM CDT for south central
and southwestern Louisiana.

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

A Tornado Watch remains in effect until 400 PM CDT for south central
and southwestern Louisiana.

&&

LAT...LON 2942 9147 2955 9141 2953 9153 2941 9149
      2964 9157 2948 9182 2957 9203 2982 9182
      2983 9183 2983 9197 2962 9209 2961 9201
      2957 9218 2958 9219 3038 9163 3010 9146
      3004 9122 2992 9123 2980 9109 2963 9108
TIME...MOT...LOC 2030Z 276DEG 28KT 3068 9136 3019 9161 2960 9210 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Brazzell
1 follow-up statement
702 
WWUS54 KLCH 272048
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
348 PM CDT Wed Oct 27 2021

LAC113-272057-
/O.CAN.KLCH.SV.W.0119.000000T0000Z-211027T2130Z/
Vermilion LA-
348 PM CDT Wed Oct 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN VERMILION PARISH
IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 500 PM CDT for south central
Louisiana.

LAT...LON 2949 9134 2953 9153 2954 9153 2964 9157
      2958 9176 2975 9160 2976 9162 2975 9174
      2975 9175 2970 9186 2954 9173 2948 9182
      2957 9203 2973 9186 3025 9158 3010 9146
      3004 9122 2963 9108
TIME...MOT...LOC 2047Z 276DEG 28KT 3067 9121 3018 9146 2959 9195 

$$

LAC045-099-101-272130-
/O.CON.KLCH.SV.W.0119.000000T0000Z-211027T2130Z/
Iberia LA-St. Mary LA-St. Martin LA-
348 PM CDT Wed Oct 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR CENTRAL IBERIA...ST. MARY AND SOUTHEASTERN ST. MARTIN PARISHES...

At 347 PM CDT, severe thunderstorms were located along a line
extending from near Zachary to 7 miles west of Bayou Sorrel to 11
miles southwest of Cypremort Point, moving east at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Morgan City, Franklin, Patterson, Jeanerette, Berwick, Bayou Vista,
Cypremort Point, Stephensville, Burns Point, Belle River, Baldwin,
Ellerslie, Patterson Memorial Airport, Glencoe, Sorrel, Cote Blanche
Island, Amelia, Lake Fausse Pointe, Charenton and Pierre Part.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 500 PM CDT for south central
Louisiana.

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

&&

LAT...LON 2949 9134 2953 9153 2954 9153 2964 9157
      2958 9176 2975 9160 2976 9162 2975 9174
      2975 9175 2970 9186 2954 9173 2948 9182
      2957 9203 2973 9186 3025 9158 3010 9146
      3004 9122 2963 9108
TIME...MOT...LOC 2047Z 276DEG 28KT 3067 9121 3018 9146 2959 9195 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Brazzell

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 27, 7:22 AM CDTSpecial Marine WarningLCH38 min
Oct 27, 8:01 AM CDTSpecial Marine WarningLCH25 min
Oct 27, 9:21 AM CDTTornado WarningLCHCalcasieu24 min
Oct 27, 9:41 AM CDTTornado WarningLCHCalcasieu34 min
Oct 27, 10:09 AM CDTTornado WarningLCHBeauregard, Calcasieu36 min
Oct 27, 10:39 AM CDTTornado Warning Tornado observedLCHBeauregard36 min
Oct 27, 11:04 AM CDTSevere Thunderstorm WarningLCHCalcasieu26 min
Oct 27, 11:13 AM CDTSpecial Marine WarningLCH47 min
Oct 27, 11:14 AM CDTSevere Thunderstorm WarningLCHCameron31 min
Oct 27, 11:19 AM CDTSevere Thunderstorm WarningLCHRapides26 min
Oct 27, 11:30 AM CDTSevere Thunderstorm Warning Considerable damage threatLCHAcadia, Allen, Beauregard, Calcasieu, Cameron, Evangeline and 3 more60 min
Oct 27, 11:33 AM CDTSpecial Marine WarningLCH57 min
Oct 27, 11:46 AM CDTTornado Warning Tornado observedLCHBeauregard, Calcasieu17 min
Oct 27, 11:53 AM CDTTornado WarningLCHCalcasieu37 min
Oct 27, 11:55 AM CDTTornado WarningLCHCalcasieu, Cameron35 min
Oct 27, 12:27 PM CDTSevere Thunderstorm Warning Considerable damage threatLCHAcadia, Allen, Beauregard, Calcasieu, Cameron, Evangeline and 4 more63 min
Oct 27, 12:31 PM CDTTornado WarningLCHAllen, Beauregard, Vernon17 min
Oct 27, 12:35 PM CDTSpecial Marine WarningLCH55 min
Oct 27, 12:56 PM CDTSevere Thunderstorm WarningLCHAllen, Evangeline, Rapides, Vernon34 min
Oct 27, 1:26 PM CDTSevere Thunderstorm WarningLCHAllen, Avoyelles, Evangeline, Rapides, Saint Landry34 min
Oct 27, 1:30 PM CDTSevere Thunderstorm WarningLCHAcadia, Cameron, Evangeline, Iberia, Lafayette, Saint Landry and 3 more60 min
Oct 27, 1:31 PM CDTSpecial Marine WarningLCH59 min
Oct 27, 1:56 PM CDTSpecial Weather StatementLCHAvoyelles34 min
Oct 27, 2:06 PM CDTTornado WarningLCHCameron, Vermilion10 min
Oct 27, 2:22 PM CDTSpecial Marine WarningLCH53 min
Oct 27, 2:24 PM CDTSevere Thunderstorm WarningLCHIberia, Lafayette, Saint Landry, Saint Martin, Vermilion66 min
Oct 27, 4:00 PM CDTSpecial Marine WarningLCH60 min
Oct 27, 4:29 PM CDTSevere Thunderstorm WarningLCHIberia, Saint Martin, St. Mary61 min
Oct 27, 5:00 PM CDTSpecial Marine WarningLCH39 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2021Every 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.