Alert archive / Louisiana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 155, NWS Lake Charles, LA

August 21, 2000Allen Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Aug 21, 2000, 4:41 PM CDT for Allen Parish, Louisiana. It was in force for 49 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Aug 21, 2000, 4:41 PM CDT (21:41 UTC)
Expired
Aug 21, 2000, 5:30 PM CDT
In force
49 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

County Allen Parish, LA

What was reported inside it

TimeReportWhereRemark
Aug 21, 5:15 PM CDTThunderstorm WindReeves, 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, 9.7 hours before the alert went out and 69 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 2000-08-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1631 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 2000-08-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -30 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
1631 J/kg
Mixed-layer CIN
-107 J/kg
Mixed-layer LCL
1082 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
-30 m²/s²
0-3 km storm-relative helicity
13 m²/s²
Significant tornado parameter
0.0
Supercell composite
-1.4

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KLCH 212142
SVRLCH
LAC003-212230-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
441 PM CDT MON AUG 21 2000

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ALLEN PARISH IN SOUTHWEST LOUISIANA

* UNTIL 530 PM CDT...

* AT 437 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES SOUTHWEST OF OBERLIN...MOVING WEST AT
  20 MPH.

* THIS STORM WILL BE NEAR...
  LEBLANC BY 450 PM CDT...
  MITTIE BY 455 PM CDT...
  REEVES BY 510 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.

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 Aug 21, 2:01 PM CDT, 2 hours 40 minutes earlier.

Area forecast discussion, Aug 21, 2:01 PM CDT, 2 hours 40 minutes before
SOUTHEAST TEXAS AND SOUTHWEST LOUISIANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
201 PM CDT MON AUG 21 2000

THE NGM MODEL SEEMS TO HAVE THE BEST SOLUTION FOR TONIGHT'S POPS.
THE COASTAL COUNTIES AND PARISHES SEEM MOST LIKELY TO RECEIVE RAIN.
THE PRIMARY PLAYER SEEMS TO BE THE TUTT LOW ACROSS THE SOUTHWEST GULF
OF MEXICO. THE AVN MODEL DEPICTS A WESTWARD PROPAGATION ACROSS
TAMPICO MEXICO BY TUESDAY MORNING...WITH CONSEQUENT HIT AND MISS
SHOWERS AND TSTMS FOR TUESDAY AND WEDNESDAY.

21-TRARES

.LCH...
LA...
TX...OZONE ACTION DAY ON TUESDAY TXZ201-215-216.

.PRELIMINARY NUMBERS...
LCH 076/095/075/093 4313
LFT 076/095/076/093 2313
AEX 073/097/072/096 3213
BPT 074/096/075/093 4313

In the hours before

Local storm report, Aug 21, 11:37 AM CDT, 5 hours 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES, LA
1137 AM CDT MON AUG 21 2000

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

1105 AM    PECAN ISLAND              LA   WIND DAMAGE
08/21/00   VERMILION                      TREES DOWN ON ROADWAY

FN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 21, 10:54 AM CDTSevere Thunderstorm WarningLCHCameron, Vermilion66 min
Aug 21, 12:24 PM CDTSevere Thunderstorm WarningLCHCameron66 min
Aug 21, 3:10 PM CDTSevere Thunderstorm WarningLCHAllen, Beauregard, Vernon65 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2000Every severe thunderstorm warning in 2000

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.