Alert archive / Louisiana / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 93, NWS Lake Charles, LA

June 29, 2001Saint Landry Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Jun 29, 2001, 4:15 PM CDT for Saint Landry Parish, Louisiana. It was in force for 60 min. 2 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued
Jun 29, 2001, 4:15 PM CDT (21:15 UTC)
Expired
Jun 29, 2001, 5:15 PM CDT
In force
60 min
Issued by
NWS Lake Charles, LA
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Saint Landry Parish, LA

What was reported inside it

TimeReportWhereRemark
Jun 29, 4:20 PM CDTThunderstorm WindLeonville, LA
Jun 29, 4:20 PM CDTHail 0.75Leonville, LA

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 9.3 hours before the alert went out and 125 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 12:00Z on 2001-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1679 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 12:00Z on 2001-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.1939Sfc1 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
1679 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
967 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
26 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KLCH 292115
SVRLCH
LAC097-292215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
415 PM CDT FRI JUN 29 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ST. LANDRY PARISH IN CENTRAL LOUISIANA

* UNTIL 515 PM CDT

* AT 410 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER LEONVILLE...MOVING NORTHEAST AT 15 MPH.

* THIS STORM WILL BE NEAR...
  PORT BARRE BY 420 PM CDT
  PALMETTO BY 450 PM CDT

SEVERE THUNDERSTORMS PRODUCE WINDS IN EXCESS OF 60 MPH...DESTRUCTIVE
HAIL...DEADLY LIGHTNING AND TORRENTIAL RAIN.

CALL 337-477-5285 TO REPORT SEVERE WEATHER TO THE WEATHER SERVICE.

LAT...LON 3047 9209 3042 9205 3049 9176 3075 9192

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lake Charles, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 29, 3:00 PM CDT, 1 hour 15 minutes earlier.

Area forecast discussion, Jun 29, 3:00 PM CDT, 1 hour 15 minutes before
SOUTHWEST LOUISIANA AND SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
300 PM CDT FRI JUN 29 2001

CURRENTLY...STRONGEST SHOWER AND THUNDERSTORM ACTIVITY LOCATED
OVER THE LAKES AREA OF SOUTHEAST TEXAS AND CENTRAL LOUISIANA
ALONG AN OLD OUTFLOW BOUNDARY SAGGING SOUTH INTO THE NORTHERN
PORTIONS OF THE FORECAST AREA.

SHOWERS AND THUNDERSTORMS LOOK LIKELY THIS WEEKEND. MOIST TROPICAL
AIRMASS WILL CONTINUE TO BE IN PLACE WITH PRECIPITABLE WATER VALUES
IN THE 1.5 TO 2 INCH RANGE. MEANWHILE...MID LEVEL LOW PRESSURE SYSTEM
WILL DRIFT TO THE SOUTHWEST FROM THE MID MISSISSIPPI VALLEY TO EAST
TEXAS.

WITH AFTERNOON CAPE VALUES RUNNING OVER 3500 J/KG EACH DAY AND MID
LEVEL COOLING AS LOW DRIFTS INTO THE FORECAST AREA...THE POSSIBILITY
FOR PULSE SEVERE STORMS WILL CONTINUE. ALSO...WITH THE HIGH PWAT
VALUES...THE POSSIBILITY FOR HEAVY RAINFALL WILL EXIST.

EXTENDED...
WET TROPICAL PATTERN CONTI,NUES INTO EARLY PART OF NEXT WEEK.

.LCH...NONE.

.PRELIM NUMBERS...
BPT 72/87/72/87/73 26362
LCH 71/87/71/87/73 26362
LFT 71/87/71/87/73 26362
AEX 69/87/70/86/71 36462

7-RUA

In the hours before

Local storm report, Jun 29, 1:03 PM CDT, 3 hours 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES, LA
103 PM CDT FRI JUN 29 2001

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1130 AM    HACKBERRY              LA      WIND DAMAGE
06/29/01   CAMERON                        PUBLIC RPT LIGHT POLE
                                          BLOWN DOWN AT PARK
Local storm report, Jun 29, 2:33 PM CDT, 1 hour 42 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES, LA
233 PM CDT FRI JUN 29 2001

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

150 PM     2 S WOODVILLE          TX      WIND DAMAGE
06/29/01   TYLER                          TREES DOWNED ON POWER LINES

215 PM     MAURICEVILLE           TX      WIND DAMAGE
06/29/01   ORANGE                         SMALL TREES BLOWN DOWN

R. ERICKSON

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 3:02 PM CDTSevere Thunderstorm WarningLCHRapides58 min
Jun 29, 5:34 PM CDTSevere Thunderstorm WarningLCHCalcasieu41 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2001Every severe thunderstorm warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.