Alert archive / Louisiana / Tornado Warnings in 2011
Tornado Warning 30, NWS Lake Charles, LA
NWS Lake Charles, LA issued this tornado warning at Nov 22, 2011, 8:31 AM CST for Vernon Parish, Louisiana. It was in force for 21 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
- Nov 22, 2011, 8:31 AM CST (14:31 UTC)
- Expired
- Nov 22, 2011, 8:52 AM CST
- In force
- 21 min
- Issued by
- NWS Lake Charles, LA
- Area
- Storm-based polygon
County Vernon Parish, LA
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 2.5 hours before the alert went out and 120 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.
- Mixed-layer CAPE
- 764 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 580 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 200 m²/s²
- 0-3 km storm-relative helicity
- 253 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 5.9
The text
As transmitted, in the capitals the NWS used until 2016.
288 WFUS54 KLCH 221431 TORLCH LAC115-221500- /O.NEW.KLCH.TO.W.0030.111122T1431Z-111122T1500Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE LAKE CHARLES LA 831 AM CST TUE NOV 22 2011 THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A * TORNADO WARNING FOR... EASTERN VERNON PARISH IN WEST CENTRAL LOUISIANA... THIS INCLUDES...SLAGLE...LEESVILLE...FORT POLK... * UNTIL 900 AM CST * AT 828 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR FORT POLK...MOVING NORTHEAST AT 45 MPH. * THE TORNADO WILL BE NEAR... SLAGLE BY 840 AM CST... LACAMP BY 850 AM CST... 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 3134 9297 3120 9283 3097 9323 3113 9333 TIME...MOT...LOC 1432Z 239DEG 39KT 3110 9318 $$ 06
2 follow-up statements
673 WWUS54 KLCH 221441 SVSLCH SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LAKE CHARLES LA 841 AM CST TUE NOV 22 2011 LAC115-221500- /O.CON.KLCH.TO.W.0030.000000T0000Z-111122T1500Z/ VERNON LA- 841 AM CST TUE NOV 22 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 AM CST FOR CENTRAL VERNON PARISH... AT 837 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A TORNADO. THIS TORNADO WAS LOCATED 7 MILES NORTHEAST OF FORT POLK..MOVING SOUTHHEAST AT 25 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... NATIONAL WEATHER SERVICE RADAR INDICATES A TORNADO MAY FORM AT ANY TIME. TAKE COVER NOW! ABANDON MOBILE HOMES AND VEHICLES. MOVE TO AN INTERIOR ROOM OR HALLWAY ON THE LOWEST FLOOR AWAY FROM WINDOWS. && LAT...LON 3120 9315 3107 9305 3097 9323 3113 9333 TIME...MOT...LOC 1441Z 239DEG 39KT 3115 9308 $$ 06
745 WWUS54 KLCH 221452 SVSLCH SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LAKE CHARLES LA 852 AM CST TUE NOV 22 2011 LAC115-221501- /O.CAN.KLCH.TO.W.0030.000000T0000Z-111122T1500Z/ VERNON LA- 852 AM CST TUE NOV 22 2011 ...THE TORNADO WARNING FOR CENTRAL VERNON PARISH IS CANCELLED... THE STORM THAT PROMPTED THE TORNADO WARNING IS NO LONGER SHOWING ROTATION AND HAS WEAKENED. LAT...LON 3120 9315 3107 9305 3097 9323 3113 9333 TIME...MOT...LOC 1451Z 239DEG 39KT 3121 9297 $$ 06
The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 22, 9:30 AM CST | Tornado Warning | LCH | Avoyelles, Evangeline, Rapides | 30 min |
| Nov 22, 5:49 PM CST | Small Craft Advisory | LCH | 10 hr |
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.