Alert archive / Louisiana / Tornado Warnings in 2018

Tornado Warning 12, NWS Lake Charles, LA

April 7, 2018Allen Parish, Evangeline Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Apr 7, 2018, 2:15 AM CDT for Allen Parish, Evangeline 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: Apr 7, 2018, 2:15 AM CDT (07:15 UTC)
Expired: Apr 7, 2018, 2:28 AM CDT
In force: 13 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Allen Parish, LA, Evangeline Parish, LA

The radar

The Ft Polk radar (KPOE), 67 km from the middle of the area, began a volume at 07:15 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 6, 8:53 PM CDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 7.3 hours before the alert went out and 68 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: 1528 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 633 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 164 m²/s²
0-3 km storm-relative helicity: 215 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 11.9

Open this sounding in Storm Lab

The text

As transmitted.

066 
WFUS54 KLCH 070715
TORLCH
LAC003-039-070745-
/O.NEW.KLCH.TO.W.0012.180407T0715Z-180407T0745Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lake Charles LA
215 AM CDT SAT APR 7 2018

The National Weather Service in Lake Charles has issued a

* Tornado Warning for...
  Southwestern Evangeline Parish in central Louisiana...
  Southeastern Allen Parish in southwestern Louisiana...

* Until 245 AM CDT
    
* At 215 AM CDT, a severe thunderstorm capable of producing a tornado
  was located near Oberlin, moving east at 45 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...
  Oberlin around 220 AM CDT. 
  Bond around 235 AM CDT. 
  Duralde around 240 AM CDT. 

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 3054 9290 3062 9291 3072 9251 3050 9247
TIME...MOT...LOC 0715Z 263DEG 37KT 3059 9283 

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

$$

RACKLEY

2 follow-up statements

930 
WWUS54 KLCH 070722
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
222 AM CDT SAT APR 7 2018

LAC003-039-070745-
/O.CON.KLCH.TO.W.0012.000000T0000Z-180407T0745Z/
Evangeline LA-Allen LA-
222 AM CDT SAT APR 7 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 245 AM CDT FOR
SOUTHWESTERN EVANGELINE AND EAST CENTRAL ALLEN PARISHES...
    
At 221 AM CDT, a severe thunderstorm capable of producing a tornado
was located over Oberlin, moving east at 45 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...
  Duralde around 240 AM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or 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 3055 9277 3063 9279 3071 9251 3053 9248
TIME...MOT...LOC 0721Z 263DEG 37KT 3060 9275 

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

$$

RACKLEY

412 
WWUS54 KLCH 070728
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
228 AM CDT SAT APR 7 2018

LAC003-039-070737-
/O.CAN.KLCH.TO.W.0012.000000T0000Z-180407T0745Z/
Evangeline LA-Allen LA-
228 AM CDT SAT APR 7 2018

...THE TORNADO WARNING FOR SOUTHWESTERN EVANGELINE AND EAST CENTRAL
ALLEN PARISHES IS CANCELLED...
    
The tornado threat has diminished and the Tornado Warning has been 
cancelled. However, hail and damaging winds remain likely and a 
Severe Thunderstorm Warning remains in effect for the area.  However 
gusty winds are still possible with this thunderstorm.

A severe thunderstorm watch remains in effect until 500 AM CDT for
central and southwestern Louisiana.

LAT...LON 3055 9277 3063 9279 3071 9251 3053 9248
TIME...MOT...LOC 0726Z 263DEG 37KT 3061 9267 

$$

RACKLEY

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 6, 9:33 PM CDT	Severe Thunderstorm Warning	LCH	Avoyelles, Evangeline, Rapides, Vernon	57 min
Apr 6, 10:29 PM CDT	Severe Thunderstorm Warning	LCH	Avoyelles, Rapides, Vernon	61 min
Apr 6, 11:47 PM CDT	Severe Thunderstorm Warning	LCH	Vernon	58 min
Apr 7, 12:30 AM CDT	Special Weather Statement	LCH	Vernon	45 min
Apr 7, 12:42 AM CDT	Severe Thunderstorm Warning	LCH	Beauregard	48 min
Apr 7, 1:03 AM CDT	Severe Thunderstorm Warning	LCH	Beauregard, Vernon	42 min
Apr 7, 1:06 AM CDT	Tornado Warning	LCH	Beauregard, Vernon	39 min
Apr 7, 1:27 AM CDT	Tornado Warning	LCH	Beauregard	33 min
Apr 7, 1:41 AM CDT	Severe Thunderstorm Warning	LCH	Allen, Beauregard, Calcasieu, Jefferson Davis, Vernon	64 min
Apr 7, 1:53 AM CDT	Tornado Warning	LCH	Allen, Beauregard	37 min
Apr 7, 2:35 AM CDT	Severe Thunderstorm Warning	LCH	Acadia, Allen, Evangeline, Jefferson Davis, Saint Landry	40 min
Apr 7, 2:40 AM CDT	Special Weather Statement	LCH	Calcasieu	50 min
Apr 7, 2:47 AM CDT	Severe Thunderstorm Warning	LCH	Beauregard, Calcasieu	43 min
Apr 7, 3:05 AM CDT	Special Weather Statement	LCH	Cameron	40 min
Apr 7, 3:12 AM CDT	Severe Thunderstorm Warning	LCH	Acadia, Avoyelles, Evangeline, Iberia, Lafayette, Saint Landry and 1 more	34 min
Apr 7, 3:24 AM CDT	Special Marine Warning	LCH		66 min
Apr 7, 3:48 AM CDT	Small Craft Advisory	LCH		25 hr
Apr 7, 3:52 AM CDT	Wind Advisory	LCH	Allen, Avoyelles, Cameron, Evangeline, Lafayette, Rapides and 2 more	17 hr
Apr 7, 3:55 AM CDT	Special Weather Statement	LCH	Cameron, Vermilion	50 min
Apr 7, 4:22 AM CDT	Special Weather Statement	LCH	Saint Martin	38 min
Apr 7, 4:31 AM CDT	Special Marine Warning	LCH		59 min
Apr 7, 6:28 AM CDT	Special Marine Warning	LCH		47 min
Apr 7, 10:14 AM CDT	Special Marine Warning	LCH		61 min
Apr 7, 10:20 AM CDT	Special Weather Statement	LCH	Cameron	40 min
Apr 7, 11:10 AM CDT	Special Marine Warning	LCH		65 min
Apr 7, 12:01 PM CDT	Special Marine Warning	LCH		59 min
Apr 7, 12:47 PM CDT	Special Marine Warning	LCH		58 min
Apr 7, 1:40 PM CDT	Special Marine Warning	LCH		65 min
Apr 7, 2:51 PM CDT	Special Weather Statement	LCH	Rapides	39 min
Apr 7, 3:59 PM CDT	Special Marine Warning	LCH		61 min
Apr 7, 4:17 PM CDT	Special Marine Warning	LCH		58 min

Nearby

Tornado Warnings in Louisiana, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.