Alert archive / Louisiana / Tornado Warnings in 2020

Tornado Warning 38, NWS Lake Charles, LA

August 26, 20204 parishes in Louisiana

NWS Lake Charles, LA issued this tornado warning at Aug 26, 2020, 1:10 PM CDT for 4 parishes in Louisiana. It was in force for 20 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, 1:10 PM CDT (18:10 UTC)
Expired
Aug 26, 2020, 1:30 PM CDT
In force
20 min
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Acadia Parish, LA, Cameron Parish, LA, Jefferson Davis Parish, LA, Vermilion Parish, LA

The radar

The Lake Charles radar (KLCH), 42 km from the middle of the area, began a volume at 18:13 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, 6.2 hours before the alert went out and 40 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.

682 
WFUS54 KLCH 261810
TORLCH
LAC001-023-053-113-261830-
/O.NEW.KLCH.TO.W.0038.200826T1810Z-200826T1830Z/

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

The National Weather Service in Lake Charles has issued a

* Tornado Warning for...
  Northeastern Cameron Parish in southwestern Louisiana...
  Southeastern Jefferson Davis Parish in southwestern Louisiana...
  Southwestern Acadia Parish in southwestern Louisiana...
  Northwestern Vermilion Parish in southwestern Louisiana...

* Until 130 PM CDT.
    
* At 109 PM CDT, a severe thunderstorm capable of producing a tornado
  was located OVER Gueydan, moving west at 50 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...
  Klondike around 115 PM CDT.
  Lake Arthur around 120 PM CDT.
  Lowry around 125 PM CDT.
  Thornwell around 130 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Roanoke and Florence Landing.

This includes Interstate 10 in Louisiana between mile markers 55 and
58.
 
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 3002 9294 3008 9291 3008 9289 3010 9290
      3028 9281 3007 9242 2991 9250
TIME...MOT...LOC 1809Z 112DEG 42KT 3002 9254 

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

$$

Hallman
2 follow-up statements
332 
WWUS54 KLCH 261823
SVSLCH

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

LAC001-023-113-261832-
/O.CAN.KLCH.TO.W.0038.000000T0000Z-200826T1830Z/
Cameron LA-Acadia LA-Vermilion LA-
123 PM CDT Wed Aug 26 2020

...THE TORNADO WARNING FOR NORTHEASTERN CAMERON...SOUTHWESTERN ACADIA
AND NORTHWESTERN VERMILION PARISHES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 3004 9293 3008 9291 3008 9289 3010 9290
      3028 9281 3013 9262 3013 9263 3009 9262
      3009 9263 3007 9264 3008 9265 3006 9268
      3006 9269 3004 9271
TIME...MOT...LOC 1822Z 112DEG 42KT 3008 9271 

$$

LAC053-261830-
/O.CON.KLCH.TO.W.0038.000000T0000Z-200826T1830Z/
Jefferson Davis LA-
123 PM CDT Wed Aug 26 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 130 PM CDT FOR
SOUTHEASTERN JEFFERSON DAVIS PARISH...
    
At 122 PM CDT, a severe thunderstorm capable of producing a tornado
was located OVER Lake Arthur, moving west at 50 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 tornadic thunderstorm will remain over MAINLY RURAL AREAS of
southeastern Jefferson Davis Parish.

This includes Interstate 10 in Louisiana between mile markers 55 and
57.
 
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 3004 9293 3008 9291 3008 9289 3010 9290
      3028 9281 3013 9262 3013 9263 3009 9262
      3009 9263 3007 9264 3008 9265 3006 9268
      3006 9269 3004 9271
TIME...MOT...LOC 1822Z 112DEG 42KT 3008 9271 

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

$$

Hallman
636 
WWUS54 KLCH 261829
SVSLCH

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

LAC053-261839-
/O.EXP.KLCH.TO.W.0038.000000T0000Z-200826T1830Z/
Jefferson Davis LA-
129 PM CDT Wed Aug 26 2020

...THE TORNADO WARNING FOR SOUTHEASTERN JEFFERSON DAVIS PARISH WILL
EXPIRE AT 130 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits. Therefore, the warning will be allowed to expire.

LAT...LON 3004 9293 3008 9291 3008 9289 3010 9290
      3028 9281 3013 9262 3013 9263 3009 9262
      3009 9263 3007 9264 3008 9265 3006 9268
      3006 9269 3004 9271
TIME...MOT...LOC 1829Z 112DEG 42KT 3010 9277 

$$

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, 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, 3:37 PM CDTTornado WarningLCHVernon23 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.