Alert archive / Louisiana / Special Weather Statements in 2011

Special Weather Statement, NWS Lake Charles, LA

March 9, 2011Rapides Parish, Louisiana

NWS Lake Charles, LA issued this special weather statement at Mar 9, 2011, 12:07 AM CST for Rapides Parish, Louisiana. It was in force for 53 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
Mar 9, 2011, 12:07 AM CST (06:07 UTC)
Expired
Mar 9, 2011, 1:00 AM CST
In force
53 min
Issued by
NWS Lake Charles, LA

County Rapides Parish, LA

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 6.1 hours before the alert went out and 171 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-pSkew-T log-p diagram, Lake Charles Mun, LA at 00:00Z on 2011-03-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2444 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 00:00Z on 2011-03-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 195 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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.

113 
WWUS84 KLCH 090607
SPSLCH

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1207 AM CST WED MAR 9 2011

LAZ028-090700-
RAPIDES LA-
1207 AM CST WED MAR 9 2011

...SIGNIFICANT WEATHER ADVISORY FOR RAPIDES PARISH UNTIL 100 AM
CST...

AT 1202 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM OVER PARADISE...MOVING EAST AT 40 MPH.

* THE STRONG THUNDERSTORM WILL BE NEAR...
  HOLLOWAY BY 1215 AM...

THE PRIMARY THREAT FROM THIS STORM IS WIND GUSTS TO NEAR 45 MPH...
WHICH COULD DOWN TREE LIMBS AND BLOW AROUND UNSECURED SMALL OBJECTS.
SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THIS STORM HAS PASSED.

THIS STORM COULD PRODUCE RAINFALL AMOUNTS OF ONE TO TWO INCHES IN A
SHORT PERIOD OF TIME...RESULTING IN PONDING OF WATER AROUND LOW LYING
ROADWAYS. REMEMBER...DO NOT DRIVE YOUR VEHICLE INTO WATER COVERED
ROADWAYS. THE DEPTH MAY BE TOO GREAT TO ALLOW A SAFE CROSSING.

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

LAT...LON 3148 9216 3141 9214 3138 9210 3137 9211
      3129 9239 3143 9246 3145 9241 3149 9221

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 8, 6:26 PM CSTAreal Flood AdvisoryLCHRapides109 min
Mar 8, 6:33 PM CSTSpecial Weather StatementLCHRapides42 min
Mar 8, 6:44 PM CSTSpecial Weather StatementLCHBeauregard61 min
Mar 8, 7:41 PM CSTFlash Flood WarningLCHAvoyelles, Rapides3 hr
Mar 8, 7:43 PM CSTSpecial Weather StatementLCHAllen62 min
Mar 8, 8:01 PM CSTSevere Thunderstorm WarningLCHAllen, Beauregard, Rapides, Vernon59 min
Mar 8, 8:46 PM CSTTornado WarningLCHRapides29 min
Mar 8, 8:58 PM CSTTornado WarningLCHRapides47 min
Mar 8, 9:32 PM CSTSpecial Weather StatementLCHVernon58 min
Mar 8, 9:44 PM CSTSevere Thunderstorm WarningLCHRapides30 min
Mar 8, 9:58 PM CSTSevere Thunderstorm WarningLCHVernon62 min
Mar 8, 10:28 PM CSTFlash Flood WarningLCHRapides, Vernon3 hr
Mar 8, 11:36 PM CSTSpecial Weather StatementLCHRapides39 min
Mar 9, 12:11 AM CSTSevere Thunderstorm WarningLCHAvoyelles, Rapides34 min
Mar 9, 1:00 AM CSTSevere Thunderstorm WarningLCHRapides60 min
Mar 9, 1:20 AM CSTSpecial Weather StatementLCHAvoyelles40 min
Mar 9, 1:32 AM CSTFlash Flood WarningLCHRapides, Vernon3 hr
Mar 9, 2:05 AM CSTSpecial Weather StatementLCHAvoyelles40 min
Mar 9, 3:13 AM CSTSmall Craft AdvisoryLCH31 hr
Mar 9, 3:48 AM CSTSpecial Weather StatementLCHSaint Martin42 min
Mar 9, 4:38 AM CSTAreal Flood WarningLCHRapides3 hr
Mar 9, 8:53 AM CSTMarine Dense Fog AdvisoryLCH9 hr
Mar 9, 11:20 AM CSTRiver Flood WarningLCHAllen, Rapides53 hr

Nearby

Special Weather Statements in Louisiana, 2011Every special weather statement 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; the sounding from the Mesonet's radiosonde archive.