Alert archive / Louisiana / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 13, NWS Lake Charles, LA

March 8, 2011Rapides Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Mar 8, 2011, 9:44 PM CST for Rapides Parish, Louisiana. It was in force for 30 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: Mar 8, 2011, 9:44 PM CST (03:44 UTC)
Expired: Mar 8, 2011, 10:14 PM CST
In force: 30 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon

County Rapides Parish, LA

What was reported inside it

Time	Report	Where	Remark
Mar 8, 9:50 PM CST	TSTM WND DMG	Deville, LA	LARGE OAK TREE BLOWN DOWN.

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
Mar 8, 1:08 PM CST	Tornado Watch	SPC	9 hr
Mar 8, 7:37 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 3.7 hours before the alert went out and 169 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: 2444 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 506 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 195 m²/s²
0-3 km storm-relative helicity: 210 m²/s²
Significant tornado parameter: 2.5
Supercell composite: 12.5

Open this sounding in Storm Lab

The text

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

927 
WUUS54 KLCH 090344
SVRLCH
LAC079-090445-
/O.NEW.KLCH.SV.W.0013.110309T0344Z-110309T0445Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
944 PM CST TUE MAR 8 2011

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

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

* UNTIL 1045 PM CST

* AT 944 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM...CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH...OVER NORTHEASTERN RAPIDES
  PARISH...MOVING NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  DEVILLE BY 950 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CST WEDNESDAY MORNING
FOR SOUTHWESTERN LOUISIANA.

&&

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

LAT...LON 3148 9216 3141 9214 3136 9207 3135 9207
      3131 9214 3133 9218 3134 9221 3126 9222
      3123 9228 3136 9245 3147 9230 3149 9220
TIME...MOT...LOC 0344Z 233DEG 32KT 3136 9224

$$

21

1 follow-up statement

899 
WWUS54 KLCH 090414
SVSLCH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1014 PM CST TUE MAR 8 2011

LAC079-090421-
/O.CAN.KLCH.SV.W.0013.000000T0000Z-110309T0445Z/
RAPIDES LA-
1014 PM CST TUE MAR 8 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN RAPIDES PARISH IS
CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CST WEDNESDAY MORNING
FOR SOUTHWESTERN LOUISIANA.

LAT...LON 3148 9216 3141 9214 3136 9207 3135 9207
      3131 9214 3133 9218 3134 9221 3126 9222
      3123 9228 3136 9245 3147 9230 3149 9220
TIME...MOT...LOC 0411Z 233DEG 32KT 3150 9201

$$

JT

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 8, 6:26 PM CST	Areal Flood Advisory	LCH	Rapides	109 min
Mar 8, 6:33 PM CST	Special Weather Statement	LCH	Rapides	42 min
Mar 8, 6:44 PM CST	Special Weather Statement	LCH	Beauregard	61 min
Mar 8, 7:41 PM CST	Flash Flood Warning	LCH	Avoyelles, Rapides	3 hr
Mar 8, 7:43 PM CST	Special Weather Statement	LCH	Allen	62 min
Mar 8, 8:01 PM CST	Severe Thunderstorm Warning	LCH	Allen, Beauregard, Rapides, Vernon	59 min
Mar 8, 8:46 PM CST	Tornado Warning	LCH	Rapides	29 min
Mar 8, 8:58 PM CST	Tornado Warning	LCH	Rapides	47 min
Mar 8, 9:32 PM CST	Special Weather Statement	LCH	Vernon	58 min
Mar 8, 9:58 PM CST	Severe Thunderstorm Warning	LCH	Vernon	62 min
Mar 8, 10:28 PM CST	Flash Flood Warning	LCH	Rapides, Vernon	3 hr
Mar 8, 11:36 PM CST	Special Weather Statement	LCH	Rapides	39 min
Mar 9, 12:07 AM CST	Special Weather Statement	LCH	Rapides	53 min
Mar 9, 12:11 AM CST	Severe Thunderstorm Warning	LCH	Avoyelles, Rapides	34 min
Mar 9, 1:00 AM CST	Severe Thunderstorm Warning	LCH	Rapides	60 min
Mar 9, 1:20 AM CST	Special Weather Statement	LCH	Avoyelles	40 min
Mar 9, 1:32 AM CST	Flash Flood Warning	LCH	Rapides, Vernon	3 hr
Mar 9, 2:05 AM CST	Special Weather Statement	LCH	Avoyelles	40 min
Mar 9, 3:13 AM CST	Small Craft Advisory	LCH		31 hr
Mar 9, 3:48 AM CST	Special Weather Statement	LCH	Saint Martin	42 min
Mar 9, 4:38 AM CST	Areal Flood Warning	LCH	Rapides	3 hr
Mar 9, 8:53 AM CST	Marine Dense Fog Advisory	LCH		9 hr
Mar 9, 11:20 AM CST	River Flood Warning	LCH	Allen, Rapides	53 hr

Nearby

Severe Thunderstorm Warnings in Louisiana, 2011 Every severe thunderstorm warning in 2011

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.