Alert archive / Louisiana / Tornado Warnings in 2011

Tornado Warning 18, NWS Lake Charles, LA

June 9, 2011Acadia Parish, Lafayette Parish, Vermilion Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Jun 9, 2011, 1:27 PM CDT for Acadia Parish, Lafayette Parish, Vermilion 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
Jun 9, 2011, 1:27 PM CDT (18:27 UTC)
Expired
Jun 9, 2011, 2:00 PM CDT
In force
33 min
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon

Counties Acadia Parish, LA, Lafayette Parish, LA, Vermilion Parish, LA

The radar

The Lake Charles radar (KLCH), 89 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 nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 6.5 hours before the alert went out and 88 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 2011-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2461 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, Lake Charles Mun, LA at 12:00Z on 2011-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -72 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
2461 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
553 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-72 m²/s²
0-3 km storm-relative helicity
-48 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

187 
WFUS54 KLCH 091827
TORLCH
LAC001-055-113-091900-
/O.NEW.KLCH.TO.W.0018.110609T1827Z-110609T1900Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
127 PM CDT THU JUN 9 2011

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* TORNADO WARNING FOR...
  WEST CENTRAL LAFAYETTE PARISH IN SOUTH CENTRAL LOUISIANA...
  SOUTH CENTRAL ACADIA PARISH IN SOUTHWEST LOUISIANA...
  NORTH CENTRAL VERMILION PARISH IN SOUTHWEST LOUISIANA...
  THIS INCLUDES KAPLAN...

* UNTIL 200 PM CDT

* AT 122 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR INDIAN
  BAYOU...MOVING WEST AT 10 MPH.

* THE TORNADO WILL BE NEAR...
  INDIAN BAYOU BY 140 PM CDT...
  KAPLAN BY 155 PM CDT...
  LYONS POINT BY 200 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

NATIONAL WEATHER SERVICE RADAR INDICATES A TORNADO MAY FORM AT ANY
TIME. TAKE COVER NOW! ABANDON MOBILE HOMES AND VEHICLES. MOVE TO AN
INTERIOR ROOM OR HALLWAY ON THE LOWEST FLOOR AWAY FROM WINDOWS.

&&

PLEASE REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE AT
337-477-5285 EXTENSION 1.

LAT...LON 2999 9242 3022 9240 3017 9209 2999 9211
TIME...MOT...LOC 1827Z 094DEG 8KT 3009 9221

$$

13
1 follow-up statement
594 
WWUS54 KLCH 091853
SVSLCH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
153 PM CDT THU JUN 9 2011

LAC001-055-113-091902-
/O.EXP.KLCH.TO.W.0018.000000T0000Z-110609T1900Z/
LAFAYETTE LA-VERMILION LA-ACADIA LA-
153 PM CDT THU JUN 9 2011

...THE TORNADO WARNING FOR SOUTH CENTRAL ACADIA...NORTH CENTRAL 
VERMILION AND WEST CENTRAL LAFAYETTE PARISHES WILL BE ALLOWED EXPIRE 
AT 200 PM CDT...

THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED...AND IS NO 
LONGER CAPABLE OF PRODUCING A TORNADO.

LAT...LON 2999 9242 3022 9240 3017 9209 2999 9211
TIME...MOT...LOC 1852Z 094DEG 8KT 3009 9227

$$

13

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 9, 11:51 AM CDTSpecial Weather StatementLCHEvangeline54 min
Jun 9, 12:40 PM CDTSpecial Weather StatementLCHLafayette50 min
Jun 9, 1:01 PM CDTSpecial Weather StatementLCHAcadia44 min
Jun 9, 3:03 PM CDTSpecial Weather StatementLCHBeauregard42 min
Jun 9, 3:26 PM CDTSpecial Weather StatementLCHBeauregard49 min

Nearby

Tornado Warnings in Louisiana, 2011Every tornado warning in 2011Tornadoes in 2011

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.