Alert archive / Louisiana / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 21, NWS Lake Charles, LA

April 3, 2018Avoyelles Parish, Evangeline Parish, Saint Landry Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Apr 3, 2018, 10:58 PM CDT for Avoyelles Parish, Evangeline Parish, Saint Landry Parish, Louisiana. It was in force for 47 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 3, 2018, 10:58 PM CDT (03:58 UTC)
Expired: Apr 3, 2018, 11:45 PM CDT
In force: 47 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

Counties Avoyelles Parish, LA, Evangeline Parish, LA, Saint Landry Parish, LA

The radar

The Ft Polk radar (KPOE), 109 km from the middle of the area, began a volume at 03:58 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.

What was reported inside it

Time	Report	Where	Remark
Apr 3, 10:58 PM CDT	TSTM WND DMG	5 N Indian Lake, LA	PUBLIC REPORTED TREE DOWN OUTSIDE OF BUNKIE TOWARDS ST LANDRY. VIA SOCIAL MEDIA PAGE, TIME ESTIMATED BY RADAR.
Apr 3, 11:09 PM CDT	TSTM WND DMG	5 Ne Ville Platte, LA	SHERIFF REPORTED A TREE DOWN ON HWY 29. TIME ESTIMATED BY RADAR.
Apr 3, 11:14 PM CDT	HAIL 1	Bunkie, LA	PUBLIC REPORT OF QUARTER SIZED HAIL. TIME ESTIMATED BY RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 3, 5:51 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 4.0 hours before the alert went out and 143 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: 1661 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 630 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 96 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 6.0

Open this sounding in Storm Lab

The text

As transmitted.

799 
WUUS54 KLCH 040358
SVRLCH
LAC009-039-097-040500-
/O.NEW.KLCH.SV.W.0021.180404T0358Z-180404T0500Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lake Charles LA
1058 PM CDT TUE APR 3 2018

The National Weather Service in Lake Charles has issued a

* Severe Thunderstorm Warning for...
  Northeastern Evangeline Parish in central Louisiana...
  Southwestern Avoyelles Parish in central Louisiana...
  Northeastern St. Landry Parish in central Louisiana...

* Until midnight CDT

* At 1057 PM CDT, severe thunderstorms were located along a line
  extending from near Cheneyville to near Chicot State Park to near
  Pine Prairie, moving east at 45 mph.

  HAZARD...70 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings. 

* Locations impacted include...
  Ville Platte, Bunkie, Melville, Palmetto, Bayou Current, Morrow,
  Evergreen, Goudeau, Indian Lake, Chicot State Park, Whiteville, Big
  Cane, Dupont, Grand Prairie, Lebeau, Bayou Chicot and St. Landry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3096 9233 3096 9182 3092 9180 3087 9180
      3086 9182 3084 9180 3081 9181 3078 9177
      3074 9176 3071 9173 3067 9173 3066 9175
      3063 9174 3062 9175 3057 9175 3056 9176
      3075 9241 3084 9233 3097 9234
TIME...MOT...LOC 0357Z 288DEG 39KT 3094 9230 3083 9228 3075 9236 

HAIL...<.75IN
WIND...70MPH
 
$$

RACKLEY

3 follow-up statements

444 
WWUS54 KLCH 040417
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
1117 PM CDT TUE APR 3 2018

LAC009-039-097-040500-
/O.CON.KLCH.SV.W.0021.000000T0000Z-180404T0500Z/
Evangeline LA-Avoyelles LA-St. Landry LA-
1117 PM CDT TUE APR 3 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT
FOR EAST CENTRAL EVANGELINE...SOUTHWESTERN AVOYELLES AND NORTHEASTERN
ST. LANDRY PARISHES...

At 1116 PM CDT, severe thunderstorms were located along a line
extending from near Morrow to near Whiteville to Grand Prairie,
moving east at 45 mph.

HAZARD...70 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings. 

Locations impacted include...
Ville Platte, Melville, Palmetto, Bayou Current, Morrow, Whiteville,
Big Cane, Goudeau, Dupont, Grand Prairie and Lebeau.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3092 9180 3087 9180 3086 9182 3084 9180
      3081 9181 3078 9177 3074 9176 3071 9173
      3067 9173 3066 9175 3063 9174 3062 9175
      3057 9175 3056 9176 3071 9228 3081 9221
      3094 9221 3095 9181
TIME...MOT...LOC 0416Z 288DEG 39KT 3088 9209 3077 9207 3069 9215 

HAIL...<.75IN
WIND...70MPH
 
$$

RACKLEY

338 
WWUS54 KLCH 040436
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
1136 PM CDT TUE APR 3 2018

LAC039-040446-
/O.CAN.KLCH.SV.W.0021.000000T0000Z-180404T0500Z/
Evangeline LA-
1136 PM CDT TUE APR 3 2018

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL EVANGELINE PARISH
IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A severe thunderstorm watch remains in effect until midnight CDT for
central Louisiana.

LAT...LON 3092 9180 3087 9180 3086 9182 3084 9180
      3081 9181 3078 9177 3074 9176 3071 9173
      3067 9173 3066 9175 3063 9174 3062 9175
      3057 9175 3056 9176 3066 9211 3080 9203
      3094 9204 3095 9181
TIME...MOT...LOC 0436Z 288DEG 39KT 3082 9187 3071 9185 3063 9193 

$$

LAC009-097-040500-
/O.CON.KLCH.SV.W.0021.000000T0000Z-180404T0500Z/
Avoyelles LA-St. Landry LA-
1136 PM CDT TUE APR 3 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT
FOR SOUTHEASTERN AVOYELLES AND NORTHEASTERN ST. LANDRY PARISHES...

At 1136 PM CDT, severe thunderstorms were located along a line
extending from near Bayou Current to near Palmetto to near Port
Barre, moving east at 45 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Melville, Palmetto, Bayou Current, Big Cane, Goudeau, Dupont and
Lebeau.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3092 9180 3087 9180 3086 9182 3084 9180
      3081 9181 3078 9177 3074 9176 3071 9173
      3067 9173 3066 9175 3063 9174 3062 9175
      3057 9175 3056 9176 3066 9211 3080 9203
      3094 9204 3095 9181
TIME...MOT...LOC 0436Z 288DEG 39KT 3082 9187 3071 9185 3063 9193 

HAIL...<.75IN
WIND...60MPH
 
$$

RACKLEY

112 
WWUS54 KLCH 040445
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
1145 PM CDT TUE APR 3 2018

LAC009-097-040454-
/O.CAN.KLCH.SV.W.0021.000000T0000Z-180404T0500Z/
Avoyelles LA-St. Landry LA-
1145 PM CDT TUE APR 3 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN AVOYELLES AND
NORTHEASTERN ST. LANDRY PARISHES IS CANCELLED...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore the warning has
been cancelled.

A severe thunderstorm watch remains in effect until midnight CDT for
central Louisiana.

LAT...LON 3092 9180 3087 9180 3086 9182 3084 9180
      3081 9181 3078 9177 3074 9176 3071 9173
      3067 9173 3066 9175 3063 9174 3062 9175
      3057 9175 3056 9176 3066 9211 3080 9203
      3094 9204 3095 9181
TIME...MOT...LOC 0442Z 288DEG 39KT 3080 9179 3069 9177 3061 9185 

$$

RACKLEY

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 7:33 PM CDT	Special Weather Statement	LCH	Rapides	42 min
Apr 3, 7:42 PM CDT	Special Weather Statement	LCH	Rapides, Vernon	48 min
Apr 3, 8:53 PM CDT	Severe Thunderstorm Warning	LCH	Vernon	37 min
Apr 3, 9:00 PM CDT	Severe Thunderstorm Warning	LCH	Rapides, Vernon	45 min
Apr 3, 9:13 PM CDT	Severe Thunderstorm Warning	LCH	Beauregard, Vernon	47 min
Apr 3, 9:30 PM CDT	Severe Thunderstorm Warning	LCH	Beauregard, Rapides, Vernon	60 min
Apr 3, 9:39 PM CDT	Areal Flood Advisory	LCH	Beauregard, Vernon	3 hr
Apr 3, 9:56 PM CDT	Severe Thunderstorm Warning	LCH	Allen, Beauregard, Calcasieu, Evangeline, Jefferson Davis, Rapides and 1 more	34 min
Apr 3, 10:29 PM CDT	Severe Thunderstorm Warning	LCH	Allen, Avoyelles, Evangeline, Rapides	61 min
Apr 3, 10:42 PM CDT	Tornado Warning	LCH	Evangeline	12 min
Apr 3, 11:21 PM CDT	Special Weather Statement	LCH	Avoyelles	39 min
Apr 4, 1:20 AM CDT	Special Marine Warning	LCH		55 min
Apr 4, 2:13 AM CDT	Special Marine Warning	LCH		92 min
Apr 4, 3:29 AM CDT	Special Marine Warning	LCH		91 min
Apr 4, 5:04 AM CDT	Special Marine Warning	LCH		41 min
Apr 4, 9:25 AM CDT	Wind Advisory	LCH	Cameron, Lafayette, Saint Martin	5 hr

Nearby

Severe Thunderstorm Warnings in Louisiana, 2018 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.