Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 116, NWS Lake Charles, LA

October 27, 20215 parishes in Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Oct 27, 2021, 1:26 PM CDT for 5 parishes in Louisiana. It was in force for 34 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, 1:26 PM CDT (18:26 UTC)
Expired
Oct 27, 2021, 2:00 PM CDT
In force
34 min
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Allen Parish, LA, Avoyelles Parish, LA, Evangeline Parish, LA, Rapides Parish, LA, Saint Landry Parish, LA

The radar

The Ft Polk radar (KPOE), 59 km from the middle of the area, began a volume at 18:27 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.

IssuedProductOfficeLasted
Oct 27, 7:55 AM CDTTornado WatchSPC9 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 6.4 hours before the alert went out and 156 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°0°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.

279 
WUUS54 KLCH 271826
SVRLCH
LAC003-009-039-079-097-271900-
/O.NEW.KLCH.SV.W.0116.211027T1826Z-211027T1900Z/

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

The National Weather Service in Lake Charles has issued a

* Severe Thunderstorm Warning for...
  Rapides Parish in central Louisiana...
  Northern Evangeline Parish in central Louisiana...
  Western Avoyelles Parish in central Louisiana...
  North central St. Landry Parish in central Louisiana...
  Northeastern Allen Parish in southwestern Louisiana...

* Until 200 PM CDT.

* At 125 PM CDT, severe thunderstorms were located along a line
  extending from near Boyce to Bond, moving east at 60 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Alexandria, Pineville, Oakdale, Marksville, Bunkie, Glenmora,
  Boyce, Cheneyville, Turkey Creek, Alexandria International Airport,
  Morrow, Effie, Ball, Cottonport, Pine Prairie, Mansura, Lecompte,
  Hessmer, Evergreen and Bayou Chicot.

This includes Interstate 49 between mile markers 36 and 100.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3145 9268 3143 9269 3141 9268 3140 9269
      3140 9267 3139 9266 3148 9221 3147 9216
      3141 9215 3136 9208 3135 9207 3134 9209
      3133 9208 3134 9203 3133 9201 3074 9204
      3072 9273 3144 9269 3149 9270
TIME...MOT...LOC 1825Z 269DEG 50KT 3143 9263 3071 9261 

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

$$

Jones

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, 1:30 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, 3:30 PM CDTSevere Thunderstorm WarningLCHIberia, Saint Martin, St. Mary, Vermilion60 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; radar from the NEXRAD Level II archive.