Alert archive / Louisiana / Tornado Warnings in 2017

Tornado Warning 2, NWS Lake Charles, LA

January 18, 2017Vernon Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Jan 18, 2017, 3:02 PM CST for Vernon Parish, Louisiana. It was in force for 28 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 18, 2017, 3:02 PM CST (21:02 UTC)
Expired: Jan 18, 2017, 3:30 PM CST
In force: 28 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Vernon Parish, LA

The radar

The Ft Polk radar (KPOE), 23 km from the middle of the area, began a volume at 21:05 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, 9.0 hours before the alert went out and 135 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: 729 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 512 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 78 m²/s²
0-3 km storm-relative helicity: 122 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted.

721 
WFUS54 KLCH 182102
TORLCH
LAC115-182130-
/O.NEW.KLCH.TO.W.0002.170118T2102Z-170118T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lake Charles LA
302 PM CST WED JAN 18 2017

The National Weather Service in Lake Charles has issued a

* Tornado Warning for...
  North central Vernon Parish in west central Louisiana...

* Until 330 PM CST
    
* At 302 PM CST, a severe thunderstorm capable of producing a tornado
  was located near Anacoco, moving northeast at 15 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...
  Kurthwood around 325 PM CST. 
  Hutton around 330 PM CST. 

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 3136 9303 3136 9301 3131 9297 3123 9325
      3128 9329 3137 9323 3137 9303
TIME...MOT...LOC 2102Z 233DEG 13KT 3127 9324 

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

$$

TWH

2 follow-up statements

672 
WWUS54 KLCH 182114
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
314 PM CST WED JAN 18 2017

LAC115-182130-
/O.CON.KLCH.TO.W.0002.000000T0000Z-170118T2130Z/
Vernon LA-
314 PM CST WED JAN 18 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CST FOR NORTH
CENTRAL VERNON PARISH...
    
At 313 PM CST, a severe thunderstorm capable of producing a tornado
was located near Kurthwood, or 8 miles northwest of Slagle, moving
northeast at 15 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...
  Kurthwood around 325 PM CST. 
  Hutton around 330 PM CST. 

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 3126 9321 3131 9326 3137 9322 3137 9303
      3136 9303 3136 9301 3132 9298
TIME...MOT...LOC 2113Z 232DEG 13KT 3130 9320 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

TWH

087 
WWUS54 KLCH 182127
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
327 PM CST WED JAN 18 2017

LAC115-182137-
/O.EXP.KLCH.TO.W.0002.000000T0000Z-170118T2130Z/
Vernon LA-
327 PM CST WED JAN 18 2017

...THE TORNADO WARNING FOR NORTH CENTRAL VERNON PARISH WILL EXPIRE AT
330 PM CST...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning will be allowed to expire.

LAT...LON 3126 9321 3131 9326 3137 9322 3137 9303
      3136 9303 3136 9301 3132 9298
TIME...MOT...LOC 2127Z 233DEG 14KT 3133 9314 

$$

TWH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 18, 1:33 AM CST	Marine Dense Fog Advisory	LCH		9 hr
Jan 18, 2:54 PM CST	Marine Dense Fog Advisory	LCH		18 hr
Jan 18, 4:43 PM CST	Tornado Warning	LCH	Vernon	17 min

Nearby

Tornado Warnings in Louisiana, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.