Alert archive / Louisiana / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 21, NWS Lake Charles, LA

April 4, 2014Rapides Parish, Vernon Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Apr 4, 2014, 6:13 AM CDT for Rapides Parish, Vernon Parish, Louisiana. It was in force for 62 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 4, 2014, 6:13 AM CDT (11:13 UTC)
Expired: Apr 4, 2014, 7:15 AM CDT
In force: 62 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon

Counties Rapides Parish, LA, Vernon Parish, LA

The radar

The Ft Polk radar (KPOE), 43 km from the middle of the area, began a volume at 11:16 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 4, 3:34 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 11.2 hours before the alert went out and 116 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: 2356 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 575 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 243 m²/s²
0-3 km storm-relative helicity: 214 m²/s²
Significant tornado parameter: 1.9
Supercell composite: 12.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

295 
WUUS54 KLCH 041113
SVRLCH
LAC079-115-041215-
/O.NEW.KLCH.SV.W.0021.140404T1113Z-140404T1215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
613 AM CDT FRI APR 4 2014

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN RAPIDES PARISH IN CENTRAL LOUISIANA...
  THIS INCLUDES...HINESTON...GLENMORA...CHENEYVILLE...
  SOUTHEASTERN VERNON PARISH IN WEST CENTRAL LOUISIANA...
  THIS INCLUDES PITKIN...

* UNTIL 715 AM CDT

* AT 613 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF SEVERE THUNDERSTORMS...CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH...FROM 18 MILES NORTH
  OF HINESTON TO 9 MILES WEST OF PITKIN...MOVING EAST AT 40 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  SIEPER...LEANDER...GARDNER...OTIS...ELMER...LECOMPTE AND ECHO

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND HEAVY RAIN. STAY INDOORS...
AWAY FROM WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 AM CDT
FRIDAY MORNING FOR SOUTHWESTERN LOUISIANA AND SOUTHEAST TEXAS. A
SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 100 PM CDT
FRIDAY AFTERNOON FOR SOUTHWESTERN LOUISIANA.

&&

PLEASE REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE AT
337-477-5285 EXTENSION 1.

LAT...LON 3113 9225 3098 9223 3099 9232 3100 9242
      3098 9247 3092 9252 3091 9260 3089 9282
      3088 9290 3089 9317 3131 9274
TIME...MOT...LOC 1113Z 277DEG 35KT 3139 9271 3093 9301

$$

K. KUYPER

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 4:33 AM CDT	Severe Thunderstorm Warning	LCH	Vernon	57 min
Apr 4, 5:29 AM CDT	Severe Thunderstorm Warning	LCH	Rapides, Vernon	61 min
Apr 4, 5:55 AM CDT	Severe Thunderstorm Warning	LCH	Avoyelles, Rapides	65 min
Apr 4, 6:27 AM CDT	Special Weather Statement	LCH	Allen, Beauregard	63 min
Apr 4, 6:52 AM CDT	Severe Thunderstorm Warning	LCH	Allen, Beauregard, Calcasieu, Jefferson Davis, Rapides, Vernon	68 min
Apr 4, 7:06 AM CDT	Special Weather Statement	LCH	Avoyelles	39 min
Apr 4, 7:09 AM CDT	Tornado Warning	LCH	Evangeline, Rapides	36 min
Apr 4, 7:16 AM CDT	Tornado Warning	LCH	Beauregard	29 min
Apr 4, 7:46 AM CDT	Special Weather Statement	LCH	Avoyelles	59 min
Apr 4, 7:49 AM CDT	Severe Thunderstorm Warning	LCH	Acadia, Allen, Evangeline, Jefferson Davis, Lafayette, Saint Landry and 1 more	71 min
Apr 4, 8:13 AM CDT	Special Marine Warning	LCH		92 min
Apr 4, 8:23 AM CDT	Severe Thunderstorm Warning	LCH	Cameron, Vermilion	67 min
Apr 4, 8:51 AM CDT	Special Weather Statement	LCH	Saint Landry	54 min
Apr 4, 8:56 AM CDT	Severe Thunderstorm Warning	LCH	Acadia, Iberia, Lafayette, Saint Martin, Vermilion	34 min
Apr 4, 9:29 AM CDT	Severe Thunderstorm Warning	LCH	Iberia, Lafayette, Saint Martin, Vermilion	61 min
Apr 4, 9:34 AM CDT	Special Marine Warning	LCH		86 min
Apr 4, 10:16 AM CDT	Special Weather Statement	LCH	Saint Martin, St. Mary, Vermilion	59 min
Apr 4, 11:30 AM CDT	Special Marine Warning	LCH		45 min
Apr 4, 11:31 AM CDT	Special Weather Statement	LCH	St. Mary	44 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2014 Every severe thunderstorm warning in 2014

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.