Alert archive / Louisiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 3, NWS Lake Charles, LA

January 17, 2012Rapides Parish, Vernon Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Jan 17, 2012, 2:38 PM CST for Rapides Parish, Vernon Parish, Louisiana. It was in force for 37 min. 1 report 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: Jan 17, 2012, 2:38 PM CST (20:38 UTC)
Expired: Jan 17, 2012, 3:15 PM CST
In force: 37 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon

Counties Rapides Parish, LA, Vernon Parish, LA

What was reported inside it

Time	Report	Where	Remark
Jan 17, 3:05 PM CST	HAIL 1.75	7 S Flatwoods, LA

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

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 8.6 hours before the alert went out and 139 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: 1296 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 458 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 278 m²/s²
0-3 km storm-relative helicity: 300 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 8.5

Open this sounding in Storm Lab

The text

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

148 
WUUS54 KLCH 172038
SVRLCH
LAC079-115-172115-
/O.NEW.KLCH.SV.W.0003.120117T2038Z-120117T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
238 PM CST TUE JAN 17 2012

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN RAPIDES PARISH IN CENTRAL LOUISIANA...
  NORTHEASTERN VERNON PARISH IN WEST CENTRAL LOUISIANA...

* UNTIL 315 PM CST

* AT 238 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM...CAPABLE OF PRODUCING QUARTER SIZE HAIL....
  OVER NORTHERN VERNON PARISH...MOVING EAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HUTTON BY 255 PM CST...
  CLIFTON AND FLATWOODS BY 305 PM CST...
  SIEPER BY 310 PM CST...

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.

&&

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

LAT...LON 3145 9280 3117 9277 3121 9332 3134 9334
      3137 9318 3137 9303 3135 9295 3137 9294
      3137 9292 3139 9292 3143 9287
TIME...MOT...LOC 2038Z 264DEG 37KT 3128 9321

$$
TINGLER

1 follow-up statement

325 
WWUS54 KLCH 172055
SVSLCH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
255 PM CST TUE JAN 17 2012

LAC079-115-172115-
/O.CON.KLCH.SV.W.0003.000000T0000Z-120117T2115Z/
RAPIDES LA-VERNON LA-
255 PM CST TUE JAN 17 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CST
FOR NORTHEASTERN VERNON AND NORTHWESTERN RAPIDES PARISHES...

AT 254 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED NEAR HUTTON..MOVING EAST AT 45 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  CLIFTON BY 300 PM CST...
  FLATWOODS AND 7 MILES NORTH OF SIEPER BY 305 PM CST...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

CONTINUOUS LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! REMEMBER...WHEN THUNDER ROARS...GO INDOORS.

&&

LAT...LON 3145 9280 3117 9277 3126 9311 3134 9311
      3136 9303 3135 9295 3137 9294 3137 9292
      3139 9292 3143 9287
TIME...MOT...LOC 2055Z 264DEG 41KT 3130 9296

$$

TINGLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 17, 5:32 AM CST	Small Craft Advisory	LCH		27 hr
Jan 17, 9:08 AM CST	Special Weather Statement	LCH	Vernon	7 min
Jan 17, 9:19 AM CST	Special Weather Statement	LCH	Rapides	26 min
Jan 17, 9:23 AM CST	Tornado Warning	LCH	Rapides, Vernon	13 min
Jan 17, 9:57 AM CST	Special Weather Statement	LCH	Vernon	48 min
Jan 17, 10:18 AM CST	Special Weather Statement	LCH	Vernon	42 min
Jan 17, 11:16 AM CST	Special Weather Statement	LCH	Rapides	29 min
Jan 17, 11:24 AM CST	Severe Thunderstorm Warning	LCH	Avoyelles, Rapides	44 min
Jan 17, 3:08 PM CST	Severe Thunderstorm Warning	LCH	Rapides, Vernon	37 min
Jan 17, 3:13 PM CST	Special Weather Statement	LCH	Avoyelles	17 min
Jan 17, 5:04 PM CST	Special Weather Statement	LCH	Evangeline	41 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2012 Every severe thunderstorm warning in 2012

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.