Alert archive / Louisiana / Tornado Warnings in 2020

Tornado Warning 47, NWS Lake Charles, LA

August 26, 2020Vernon Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Aug 26, 2020, 3:37 PM CDT for Vernon Parish, Louisiana. It was in force for 23 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
Aug 26, 2020, 3:37 PM CDT (20:37 UTC)
Expired
Aug 26, 2020, 4:00 PM CDT
In force
23 min
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

County Vernon Parish, LA

The radar

The Ft Polk radar (KPOE), 15 km from the middle of the area, began a volume at 20:36 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
Aug 26, 2:41 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 8.6 hours before the alert went out and 102 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 2020-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1484 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 2020-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 147 square meters per square second.1939Sfc1 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
1484 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
605 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
147 m²/s²
0-3 km storm-relative helicity
160 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.3

Open this sounding in Storm Lab

The text

As transmitted.

343 
WFUS54 KLCH 262037
TORLCH
LAC115-262100-
/O.NEW.KLCH.TO.W.0047.200826T2037Z-200826T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lake Charles LA
Issued by National Weather Service Brownsville TX
337 PM CDT Wed Aug 26 2020

The National Weather Service in Lake Charles has issued a

* Tornado Warning for...
  Eastern Vernon Parish in west central Louisiana...

* Until 400 PM CDT.
    
* At 337 PM CDT, a severe thunderstorm capable of producing a tornado
  was located OVER Fullerton, or NEAR Pitkin, moving northwest at 40
  mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Fullerton and Cravens around 340 PM CDT.
  Leesville, Slagle, Fort Polk and New Llano around 400 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Pickering.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to an interior room on the lowest floor of a
sturdy building. Avoid windows. If you are outdoors, in a mobile
home, or in a vehicle, move to the closest substantial shelter and
protect yourself from flying debris.

&&

LAT...LON 3102 9283 3097 9282 3088 9291 3088 9296
      3108 9335 3129 9315
TIME...MOT...LOC 2037Z 128DEG 35KT 3098 9294 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

Hallman
1 follow-up statement
876 
WWUS54 KLCH 262053
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
Issued by National Weather Service Brownsville TX
353 PM CDT Wed Aug 26 2020

LAC115-262102-
/O.EXP.KLCH.TO.W.0047.000000T0000Z-200826T2100Z/
Vernon LA-
353 PM CDT Wed Aug 26 2020

...THE TORNADO WARNING FOR EASTERN VERNON PARISH WILL EXPIRE AT 400
PM CDT...
                
The storm which prompted the warning has weakened below severe
limits. Therefore, the warning will be allowed to expire.

A Tornado Watch remains in effect until 900 PM CDT for central and
west central Louisiana.

LAT...LON 3102 9283 3097 9282 3088 9291 3088 9296
      3108 9335 3129 9315
TIME...MOT...LOC 2052Z 128DEG 35KT 3107 9307 

$$

Hallman

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 10:13 AM CDTSpecial Marine WarningLCH2 hr
Aug 26, 10:20 AM CDTSpecial Weather StatementLCHCameron, Iberia, Lafayette, Saint Martin, St. Mary, Vermilion70 min
Aug 26, 11:29 AM CDTSpecial Weather StatementLCHCameron, Iberia, St. Mary, Vermilion61 min
Aug 26, 12:14 PM CDTSpecial Weather StatementLCHCalcasieu, Cameron91 min
Aug 26, 12:30 PM CDTSevere Thunderstorm WarningLCHBeauregard, Calcasieu, Cameron, Jefferson Davis60 min
Aug 26, 12:46 PM CDTSpecial Weather StatementLCHAcadia, Cameron, Iberia, Jefferson Davis, St. Mary, Vermilion44 min
Aug 26, 1:10 PM CDTTornado WarningLCHAcadia, Cameron, Jefferson Davis, Vermilion20 min
Aug 26, 2:08 PM CDTTornado WarningLCHAcadia22 min
Aug 26, 2:28 PM CDTTornado WarningLCHAcadia, Allen, Evangeline, Jefferson Davis14 min
Aug 26, 3:11 PM CDTTornado WarningLCHAvoyelles, Evangeline, Rapides, Saint Landry19 min
Aug 26, 3:18 PM CDTTornado WarningLCHBeauregard27 min
Aug 26, 3:27 PM CDTTornado WarningLCHAvoyelles, Evangeline, Rapides18 min
Aug 26, 4:18 PM CDTSpecial Weather StatementLCHAvoyelles, Rapides, Vernon42 min
Aug 26, 4:50 PM CDTSpecial Marine WarningLCH25 min

Nearby

Tornado Warnings in Louisiana, 2020Every tornado warning in 2020Tornadoes in 2020

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.