Alert archive / Louisiana / Tornado Warnings in 2012

Tornado Warning 4, NWS Lake Charles, LA

January 17, 2012Rapides Parish, Vernon Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Jan 17, 2012, 9:23 AM CST for Rapides Parish, Vernon Parish, Louisiana. It was in force for 13 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: Jan 17, 2012, 9:23 AM CST (15:23 UTC)
Expired: Jan 17, 2012, 9:36 AM CST
In force: 13 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon

Counties Rapides Parish, LA, Vernon Parish, LA

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 3.4 hours before the alert went out and 133 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1296 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 458 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 278 m²/s²
0-3 km storm-relative helicity: 300 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 8.5

Open this sounding in Storm Lab

The text

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

061 
WFUS54 KLCH 171523
TORLCH
LAC079-115-171600-
/O.NEW.KLCH.TO.W.0004.120117T1523Z-120117T1600Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
923 AM CST TUE JAN 17 2012

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL RAPIDES PARISH IN CENTRAL LOUISIANA...
  EAST CENTRAL VERNON PARISH IN WEST CENTRAL LOUISIANA...

* UNTIL 1000 AM CST

* AT 920 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR LACAMP...
  MOVING EAST AT 30 MPH.

* THE TORNADO WILL BE NEAR...
  SIEPER BY 935 AM CST...
  OTIS BY 945 AM CST...
  GARDNER BY 950 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 3139 9259 3116 9251 3112 9298 3119 9300
TIME...MOT...LOC 1523Z 252DEG 27KT 3118 9292

$$
TINGLER

1 follow-up statement

422 
WWUS54 KLCH 171536
SVSLCH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
936 AM CST TUE JAN 17 2012

LAC079-115-171546-
/O.CAN.KLCH.TO.W.0004.000000T0000Z-120117T1600Z/
RAPIDES LA-VERNON LA-
936 AM CST TUE JAN 17 2012

...THE TORNADO WARNING FOR EAST CENTRAL VERNON AND CENTRAL RAPIDES 
PARISHES IS CANCELLED. THE STORM THAT PROMPTED THE TORNADO WARNING 
HAS WEAKENED, THEREFORE THE WARNING IS NOW CANCELLED.

LAT...LON 3139 9259 3116 9251 3112 9298 3119 9300
TIME...MOT...LOC 1536Z 252DEG 27KT 3121 9281

$$


TINGLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 17, 5:32 AM CST	Small Craft Advisory	LCH		27 hr
Jan 17, 9:08 AM CST	Special Weather Statement	LCH	Vernon	7 min
Jan 17, 9:19 AM CST	Special Weather Statement	LCH	Rapides	26 min
Jan 17, 9:57 AM CST	Special Weather Statement	LCH	Vernon	48 min
Jan 17, 10:18 AM CST	Special Weather Statement	LCH	Vernon	42 min
Jan 17, 11:16 AM CST	Special Weather Statement	LCH	Rapides	29 min
Jan 17, 11:24 AM CST	Severe Thunderstorm Warning	LCH	Avoyelles, Rapides	44 min
Jan 17, 2:38 PM CST	Severe Thunderstorm Warning	LCH	Rapides, Vernon	37 min
Jan 17, 3:08 PM CST	Severe Thunderstorm Warning	LCH	Rapides, Vernon	37 min
Jan 17, 3:13 PM CST	Special Weather Statement	LCH	Avoyelles	17 min
Jan 17, 5:04 PM CST	Special Weather Statement	LCH	Evangeline	41 min

Nearby

Tornado Warnings in Louisiana, 2012 Every tornado warning in 2012 Tornadoes in 2012

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.