Alert archive / Louisiana / Tornado Warnings in 2017

Tornado Warning 15, NWS Lake Charles, LA

January 21, 2017Saint Landry Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Jan 21, 2017, 12:47 AM CST for Saint Landry 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 21, 2017, 12:47 AM CST (06:47 UTC)
Expired: Jan 21, 2017, 1:15 AM CST
In force: 28 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Saint Landry Parish, LA

The radar

The Ft Polk radar (KPOE), 110 km from the middle of the area, began a volume at 06:47 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
Jan 20, 7:32 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 6.8 hours before the alert went out and 142 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: 627 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 842 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 156 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted.

367 
WFUS54 KLCH 210647
TORLCH
LAC097-210715-
/O.NEW.KLCH.TO.W.0015.170121T0647Z-170121T0715Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lake Charles LA
1247 AM CST SAT JAN 21 2017

The National Weather Service in Lake Charles has issued a

* Tornado Warning for...
  Northeastern St. Landry Parish in central Louisiana...

* Until 115 AM CST
    
* At 1247 AM CST, a severe thunderstorm capable of producing a
  tornado was located near Grand Prairie, or 9 miles south of Morrow,
  moving northeast 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...
  Lebeau around 100 AM CST. 
  Palmetto around 105 AM CST. 
  Bayou Current around 115 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.

&&

LAT...LON 3078 9177 3060 9213 3066 9218 3085 9197
      3085 9183 3081 9181
TIME...MOT...LOC 0647Z 231DEG 31KT 3069 9208 

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

$$

K. Kuyper

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 20, 8:03 PM CST	Severe Thunderstorm Warning	LCH	Beauregard	42 min
Jan 20, 8:32 PM CST	Tornado Warning	LCH	Calcasieu	28 min
Jan 20, 8:56 PM CST	Tornado Warning	LCH	Beauregard, Calcasieu	21 min
Jan 20, 9:16 PM CST	Severe Thunderstorm Warning	LCH	Beauregard, Calcasieu	23 min
Jan 20, 9:38 PM CST	Special Weather Statement	LCH	Calcasieu	37 min
Jan 20, 10:05 PM CST	Tornado Warning	LCH	Allen, Beauregard	25 min
Jan 20, 10:21 PM CST	Special Weather Statement	LCH	Saint Landry	24 min
Jan 20, 10:26 PM CST	Severe Thunderstorm Warning	LCH	Acadia, Allen, Evangeline, Jefferson Davis	34 min
Jan 20, 10:44 PM CST	Special Weather Statement	LCH	Jefferson Davis	31 min
Jan 20, 10:47 PM CST	Special Weather Statement	LCH	Saint Landry	28 min
Jan 20, 10:50 PM CST	Special Marine Warning	LCH		55 min
Jan 20, 10:59 PM CST	Special Weather Statement	LCH	Evangeline	31 min
Jan 20, 11:05 PM CST	Severe Thunderstorm Warning	LCH	Acadia, Jefferson Davis	25 min
Jan 20, 11:09 PM CST	Special Marine Warning	LCH		66 min
Jan 20, 11:10 PM CST	Tornado Warning	LCH	Avoyelles, Saint Landry	20 min
Jan 20, 11:28 PM CST	Severe Thunderstorm Warning	LCH	Acadia, Allen, Evangeline, Jefferson Davis	32 min
Jan 20, 11:32 PM CST	Tornado Warning	LCH	Acadia, Evangeline, Jefferson Davis, Saint Landry	28 min
Jan 20, 11:35 PM CST	Areal Flood Advisory	LCH	Calcasieu	115 min
Jan 20, 11:52 PM CST	Tornado Warning	LCH	Acadia, Evangeline, Saint Landry	8 min
Jan 20, 11:56 PM CST	Tornado Warning	LCH	Acadia, Evangeline, Saint Landry	19 min
Jan 21, 12:12 AM CST	Tornado Warning	LCH	Evangeline, Saint Landry	33 min
Jan 21, 12:16 AM CST	Special Weather Statement	LCH	Avoyelles	44 min
Jan 21, 12:53 AM CST	Severe Thunderstorm Warning	LCH	Vernon	67 min
Jan 21, 1:07 AM CST	Special Weather Statement	LCH	Saint Landry	68 min
Jan 21, 1:19 AM CST	Severe Thunderstorm Warning	LCH	Acadia, Evangeline, Saint Landry	26 min
Jan 21, 1:34 AM CST	Severe Thunderstorm Warning	LCH	Acadia, Avoyelles, Lafayette, Saint Landry, Saint Martin	56 min
Jan 21, 1:45 AM CST	Areal Flood Advisory	LCH	Saint Landry, Saint Martin	2 hr
Jan 21, 2:11 AM CST	Special Weather Statement	LCH	Evangeline, Rapides	49 min
Jan 21, 2:50 AM CST	Special Weather Statement	LCH	Avoyelles, Saint Landry	40 min
Jan 21, 2:53 AM CST	Special Weather Statement	LCH	Saint Martin	52 min
Jan 21, 3:19 AM CST	Marine Dense Fog Advisory	LCH		6 hr
Jan 21, 8:53 AM CST	River Flood Warning	LCH	Allen	4 days
Jan 21, 8:53 AM CST	River Flood Warning	LCH	Allen	7 days
Jan 21, 8:53 AM CST	River Flood Warning	LCH	Calcasieu	5 days
Jan 21, 8:53 AM CST	River Flood Warning	LCH	Acadia, Jefferson Davis, Vermilion	5 days
Jan 21, 8:53 AM CST	River Flood Warning	LCH	Lafayette, Saint Landry, Saint Martin	57 hr
Jan 21, 9:26 AM CST	Gale Warning	LCH		45 hr
Jan 21, 9:26 AM CST	Small Craft Advisory	LCH		54 hr
Jan 21, 1:38 PM CST	Wind Advisory	LCH	Allen, Avoyelles, Beauregard, Cameron, Evangeline, Lafayette and 4 more	34 hr
Jan 21, 2:45 PM CST	River Flood Warning	LCH	Acadia, Evangeline, Saint Landry	45 hr
Jan 21, 3:35 PM CST	Low Water Advisory	LCH		18 hr

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.