Alert archive / Louisiana / Tornado Warnings in 2020

Tornado Warning 65, NWS Lake Charles, LA

August 27, 2020Iberia Parish, Lafayette Parish, Saint Martin Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Aug 27, 2020, 1:42 AM CDT for Iberia Parish, Lafayette Parish, Saint Martin Parish, Louisiana. It was in force for 33 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 27, 2020, 1:42 AM CDT (06:42 UTC)
Expired
Aug 27, 2020, 2:15 AM CDT
In force
33 min
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Iberia Parish, LA, Lafayette Parish, LA, Saint Martin Parish, LA

The watch it was issued in

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

IssuedProductOfficeLasted
Aug 26, 9:03 PM CDTTornado WatchSPC11 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 6.7 hours before the alert went out and 209 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, Slidell Radar S, LA at 00:00Z on 2020-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1989 joules per kilogram.LCLEL10008507005003002001001 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, Slidell Radar S, LA at 00:00Z on 2020-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 179 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
1989 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
724 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
179 m²/s²
0-3 km storm-relative helicity
200 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.3

Open this sounding in Storm Lab

The text

As transmitted.

838 
WFUS54 KLCH 270642
TORLCH
LAC045-055-099-270715-
/O.NEW.KLCH.TO.W.0065.200827T0642Z-200827T0715Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lake Charles LA
Issued by National Weather Service Brownsville TX
142 AM CDT Thu Aug 27 2020

The National Weather Service in Lake Charles has issued a

* Tornado Warning for...
  Eastern Lafayette Parish in south central Louisiana...
  Northwestern Iberia Parish in south central Louisiana...
  Northwestern St. Martin Parish in south central Louisiana...

* Until 215 AM CDT.
    
* At 142 AM CDT, a severe thunderstorm capable of producing a tornado
  was located NEAR Lydia, or 7 miles west of Jeanerette, moving north
  at 60 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.

* Locations impacted include...
  Lafayette, New Iberia, Catahoula, Scott, Breaux Bridge, Carencro,
  St. Martinville, Jeanerette, Avery Island and Broussard.

This includes the following highways...
 Interstate 10 in Louisiana between mile markers 102 and 123.
 Interstate 49 between mile markers 1 and 6.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 2978 9186 2980 9185 2979 9185 2979 9183
      2982 9182 2982 9186 2984 9188 2984 9189
      2985 9190 3035 9209 3040 9179 3040 9170
      2989 9167 2979 9179
TIME...MOT...LOC 0642Z 173DEG 52KT 2988 9179 

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

$$

53-Schroeder
1 follow-up statement
331 
WWUS54 KLCH 270701
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
Issued by National Weather Service Brownsville TX
201 AM CDT Thu Aug 27 2020

LAC045-055-099-270715-
/O.CON.KLCH.TO.W.0065.000000T0000Z-200827T0715Z/
Lafayette LA-Iberia LA-St. Martin LA-
201 AM CDT Thu Aug 27 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 215 AM CDT FOR EASTERN
LAFAYETTE...NORTHWESTERN IBERIA AND NORTHWESTERN ST. MARTIN
PARISHES...
    
At 201 AM CDT, a severe thunderstorm capable of producing a tornado
was located OVER St. Martinville, moving north at 55 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.

Locations impacted include...
Lafayette, New Iberia, Catahoula, Breaux Bridge, Carencro, St.
Martinville, Broussard, Henderson, Loreauville and Cade.

This includes the following highways...
 Interstate 10 in Louisiana between mile markers 102 and 123.
 Interstate 49 between mile markers 1 and 6.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 2996 9190 3035 9209 3040 9179 3040 9170
      2997 9168
TIME...MOT...LOC 0701Z 164DEG 47KT 3013 9183 

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

$$

53-Schroeder

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 8:40 PM CDTTornado WarningLCHCameron, Vermilion35 min
Aug 26, 9:10 PM CDTTornado WarningLCHCameron35 min
Aug 26, 9:14 PM CDTTornado WarningLCHCameron, Vermilion31 min
Aug 26, 9:40 PM CDTTornado Warning Tornado observedLCHCalcasieu, Cameron, Jefferson Davis, Vermilion35 min
Aug 26, 9:42 PM CDTTornado WarningLCHCameron, Jefferson Davis, Vermilion33 min
Aug 26, 10:07 PM CDTTornado WarningLCHCameron38 min
Aug 26, 10:12 PM CDTTornado WarningLCHCalcasieu, Cameron, Jefferson Davis33 min
Aug 26, 10:26 PM CDTTornado WarningLCHIberia, Vermilion34 min
Aug 26, 10:39 PM CDTTornado WarningLCHCameron51 min
Aug 26, 10:45 PM CDTTornado WarningLCHCalcasieu, Cameron, Jefferson Davis30 min
Aug 26, 10:53 PM CDTExtreme Wind WarningLCHAcadia, Allen, Beauregard, Calcasieu, Cameron, Jefferson Davis and 1 more2 hr
Aug 26, 11:05 PM CDTTornado WarningLCHAcadia, Vermilion25 min
Aug 26, 11:16 PM CDTTornado WarningLCHLafayette, Vermilion29 min
Aug 26, 11:28 PM CDTTornado WarningLCHAcadia, Evangeline, Jefferson Davis, Vermilion32 min
Aug 26, 11:38 PM CDTFlash Flood WarningLCHAcadia, Allen, Evangeline, Iberia, Jefferson Davis, Lafayette and 4 more10 hr
Aug 26, 11:41 PM CDTTornado WarningLCHIberia, Lafayette, St. Mary, Vermilion34 min
Aug 27, 12:02 AM CDTTornado WarningLCHAcadia, Allen, Beauregard, Evangeline, Jefferson Davis, Lafayette and 2 more43 min
Aug 27, 12:11 AM CDTTornado WarningLCHIberia, Lafayette, Saint Martin, St. Mary, Vermilion34 min
Aug 27, 12:16 AM CDTFlash Flood WarningLCHCalcasieu, Cameron, Jefferson Davis, Vermilion9 hr
Aug 27, 12:44 AM CDTTornado WarningLCHAcadia, Allen, Beauregard, Evangeline, Iberia, Jefferson Davis and 5 more46 min
Aug 27, 12:54 AM CDTExtreme Wind WarningLCHAllen, Beauregard, Calcasieu, Cameron, Jefferson Davis2 hr
Aug 27, 2:14 AM CDTFlash Flood WarningLCHAllen, Beauregard, Calcasieu, Jefferson Davis, Rapides, Vernon8 hr
Aug 27, 2:25 AM CDTTornado WarningLCHIberia, Saint Martin, St. Mary35 min
Aug 27, 2:58 AM CDTExtreme Wind WarningLCHAllen, Beauregard, Calcasieu, Cameron, Jefferson Davis, Vernon2 hr
Aug 27, 4:00 AM CDTFlash Flood WarningLCHAcadia, Allen, Avoyelles, Evangeline, Iberia, Lafayette and 3 more6 hr
Aug 27, 4:18 AM CDTTornado WarningLCHIberia, Saint Martin, St. Mary27 min
Aug 27, 4:25 AM CDTRiver Flood WarningLCHSaint Martin, St. Mary13 hr
Aug 27, 6:02 AM CDTRiver Flood WarningLCHLafayette, Saint Landry, Saint Martin4 days
Aug 27, 9:12 AM CDTAreal Flood WarningLCHCalcasieu, Cameron, Jefferson Davis, Vermilion6 hr
Aug 27, 9:43 AM CDTRiver Flood WarningLCHRapides12 days
Aug 27, 9:47 AM CDTRiver Flood WarningLCHAllen, Beauregard4 days
Aug 27, 9:54 AM CDTRiver Flood WarningLCHBeauregard, Vernon10 hr
Aug 27, 9:57 AM CDTAreal Flood WarningLCHAcadia, Allen, Avoyelles, Evangeline, Iberia, Lafayette and 3 more3 hr
Aug 27, 9:57 AM CDTRiver Flood WarningLCHAcadia, Evangeline, Saint Landry5 days
Aug 27, 10:02 AM CDTRiver Flood WarningLCHAcadia, Jefferson Davis, Vermilion14 days
Aug 27, 10:04 AM CDTAreal Flood WarningLCHAllen, Beauregard, Calcasieu, Jefferson Davis, Rapides, Vernon5 hr
Aug 27, 10:10 AM CDTAreal Flood WarningLCHAcadia, Allen, Evangeline, Iberia, Jefferson Davis, Lafayette and 3 more3 hr
Aug 27, 10:36 AM CDTSpecial Weather StatementLCHIberia, Saint Martin, St. Mary39 min
Aug 27, 1:13 PM CDTSmall Craft AdvisoryLCH6 hr
Aug 27, 2:23 PM CDTSpecial Weather StatementLCHSt. Mary37 min
Aug 27, 4:14 PM CDTCoastal Flood AdvisoryLCHCameron17 hr
Aug 27, 6:45 PM CDTAreal Flood WarningLCHAcadia, Calcasieu, Cameron, Iberia, Jefferson Davis, Lafayette and 3 more24 hr

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.