Alert archive / Louisiana / Tornado Warnings in 2018

Tornado Warning 49, NWS Lake Charles, LA

December 27, 2018Allen Parish, Evangeline Parish, Rapides Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Dec 27, 2018, 8:41 AM CST for Allen Parish, Evangeline Parish, Rapides Parish, Louisiana. It was in force for 34 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: Dec 27, 2018, 8:41 AM CST (14:41 UTC)
Expired: Dec 27, 2018, 9:15 AM CST
In force: 34 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, Rapides Parish, LA

The radar

The Ft Polk radar (KPOE), 47 km from the middle of the area, began a volume at 14:41 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
Dec 27, 3:43 AM CST	Tornado Watch	SPC	10 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 2.7 hours before the alert went out and 107 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: 1148 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 508 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 497 m²/s²
0-3 km storm-relative helicity: 738 m²/s²
Significant tornado parameter: 4.5
Supercell composite: 17.5

Open this sounding in Storm Lab

The text

As transmitted.

107 
WFUS54 KLCH 271441
TORLCH
LAC003-039-079-271515-
/O.NEW.KLCH.TO.W.0049.181227T1441Z-181227T1515Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lake Charles LA
841 AM CST THU DEC 27 2018

The National Weather Service in Lake Charles has issued a

* Tornado Warning for...
  South central Rapides Parish in central Louisiana...
  Northern Evangeline Parish in central Louisiana...
  Northeastern Allen Parish in southwestern Louisiana...

* Until 915 AM CST.
    
* At 841 AM CST, a severe thunderstorm capable of producing a tornado
  was located near Oakdale, moving east at 35 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...
  Glenmora around 855 AM CST.
  Turkey Creek around 910 AM CST.
  Lecompte around 915 AM CST.

Other locations impacted by this tornadic thunderstorm include Forest
Hill and Mcnary.

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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

&&

LAT...LON 3080 9274 3098 9275 3113 9237 3087 9227
TIME...MOT...LOC 1441Z 249DEG 28KT 3088 9270 

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

$$

Warthen

1 follow-up statement

274 
WWUS54 KLCH 271502
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
902 AM CST THU DEC 27 2018

LAC003-271511-
/O.CAN.KLCH.TO.W.0049.000000T0000Z-181227T1515Z/
Allen LA-
902 AM CST THU DEC 27 2018

...THE TORNADO WARNING FOR NORTHEASTERN ALLEN PARISH IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 1100 AM CST for central
Louisiana.

LAT...LON 3086 9256 3096 9259 3113 9237 3087 9227
TIME...MOT...LOC 1501Z 249DEG 28KT 3094 9253 

$$

LAC039-079-271515-
/O.CON.KLCH.TO.W.0049.000000T0000Z-181227T1515Z/
Rapides LA-Evangeline LA-
902 AM CST THU DEC 27 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 AM CST FOR SOUTH
CENTRAL RAPIDES AND NORTHERN EVANGELINE PARISHES...
    
At 901 AM CST, a severe thunderstorm capable of producing a tornado
was located near Glenmora, moving east at 30 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...
  Turkey Creek around 910 AM CST.
  Lecompte around 915 AM 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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

&&

LAT...LON 3086 9256 3096 9259 3113 9237 3087 9227
TIME...MOT...LOC 1501Z 249DEG 28KT 3094 9253 

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

$$

Warthen

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 26, 8:05 PM CST	Gale Warning	LCH		10 hr
Dec 26, 8:05 PM CST	Small Craft Advisory	LCH		33 hr
Dec 27, 6:38 AM CST	Tornado Warning	LCH	Rapides, Vernon	37 min
Dec 27, 7:11 AM CST	Tornado Warning	LCH	Vernon	34 min
Dec 27, 7:11 AM CST	Tornado Warning	LCH	Calcasieu	34 min
Dec 27, 7:37 AM CST	Tornado Warning	LCH	Calcasieu	19 min
Dec 27, 8:30 AM CST	Severe Thunderstorm Warning	LCH	Allen, Calcasieu, Jefferson Davis	30 min
Dec 27, 8:36 AM CST	River Flood Warning	LCH	Calcasieu	12 hr
Dec 27, 8:41 AM CST	Tornado Warning	LCH	Allen, Evangeline	22 min
Dec 27, 9:00 AM CST	Coastal Flood Advisory	LCH	Cameron	7 hr
Dec 27, 9:14 AM CST	Tornado Warning	LCH	Avoyelles, Evangeline, Rapides	31 min
Dec 27, 9:28 AM CST	Tornado Warning	LCH	Avoyelles, Evangeline, Saint Landry	32 min
Dec 27, 9:36 AM CST	Areal Flood Advisory	LCH	Acadia, Allen, Avoyelles, Calcasieu, Evangeline, Iberia and 6 more	5 hr
Dec 27, 9:42 AM CST	Tornado Warning	LCH	Acadia, Cameron, Jefferson Davis, Vermilion	33 min
Dec 27, 9:55 AM CST	Flash Flood Warning	LCH	Acadia, Calcasieu, Evangeline, Jefferson Davis	3 hr
Dec 27, 9:57 AM CST	Flash Flood Warning	LCH	Avoyelles, Rapides	3 hr
Dec 27, 10:14 AM CST	Tornado Warning	LCH	Acadia, Lafayette, Vermilion	31 min
Dec 27, 10:21 AM CST	Flash Flood Warning	LCH	Acadia	2 hr
Dec 27, 11:03 AM CST	Flash Flood Warning	LCH	Saint Landry	3 hr
Dec 27, 11:22 AM CST	Flash Flood Warning	LCH	Lafayette, Vermilion	3 hr
Dec 27, 12:07 PM CST	Flash Flood Warning	LCH	Vermilion	113 min
Dec 27, 12:50 PM CST	Flash Flood Warning	LCH	Iberia, Saint Martin	3 hr
Dec 27, 1:49 PM CST	River Flood Warning	LCH	Lafayette, Vermilion	69 hr
Dec 27, 2:10 PM CST	River Flood Warning	LCH	Acadia, Evangeline, Saint Landry	4 days
Dec 27, 2:10 PM CST	River Flood Warning	LCH	Beauregard	4 days
Dec 27, 2:10 PM CST	River Flood Warning	LCH	Allen	4 days
Dec 27, 2:46 PM CST	Areal Flood Advisory	LCH	Saint Martin, St. Mary	119 min
Dec 27, 3:23 PM CST	Flash Flood Watch	LCH	Lafayette, Saint Landry, Saint Martin	18 hr
Dec 27, 4:46 PM CST	Areal Flood Advisory	LCH	Acadia, Iberia, Lafayette, Saint Landry, Saint Martin, St. Mary and 1 more	3 hr

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.