Alert archive / Louisiana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 131, NWS Lake Charles, LA

July 23, 2000Saint Landry Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Jul 23, 2000, 2:25 AM CDT for Saint Landry Parish, Louisiana. It was in force for 65 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
Jul 23, 2000, 2:25 AM CDT (07:25 UTC)
Expired
Jul 23, 2000, 3:30 AM CDT
In force
65 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

County Saint Landry Parish, LA

The radar

The Ft Polk radar (KPOE), 111 km from the middle of the area, began a volume at 07:25 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Jul 23, 2:30 AM CDTThunderstorm WindPalmetto, 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 00:00Z, 7.4 hours before the alert went out and 126 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 2000-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2234 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 00:00Z on 2000-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 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
2234 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
1539 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
60 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.

033 
WUUS54 KLCH 230725
SVRLCH
LAC097-230830-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
225 AM CDT SUN JUL 23 2000

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

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

* UNTIL 330 AM CDT

* AT 220 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER NORTH CENTRAL ST. LANDRY PARISH..MOVING
  SOUTHEAST AT 25 MPH.

* THIS STORM WILL BE NEAR...
  PALMETTO BY 230 AM CDT
  KROTZ SPRINGS BY 305 AM 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 Jul 22, 8:30 PM CDT, 5 hours 55 minutes earlier.

Area forecast discussion, Jul 22, 8:30 PM CDT, 5 hours 55 minutes before
SOUTHEAST TEXAS AND SOUTHWEST LOUISIANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
830 PM CDT SAT JUL 22 2000

A WEAK OUTFLOW BOUNDARY ACROSS THE CENTRAL HALF OF THE CWA CONTINUES
TO PRODUCE ISOLATED THUNDERSTORMS THIS EVENING. EXPECT ANY FURTHER
DEVELOPMENT TO DIE OFF BEFORE MIDNIGHT. A WEAK FRONT WILL CONTINUE
TO SLIDE SOUTH INTO THE NORTHERN HALF OF THE AREA TONIGHT AND WILL
LIKELY TRIGGER A FEW MORE SHOWERS AND THUNDERSTORMS ON SUNDAY
AFTERNOON AS STRONG DAYTIME HEATING AND A WEAK UPPER LEVEL
DISTURBANCE COME TOGETHER. TEMPS WILL BE IN THE USUAL RANGE OF LOW
TO MID 70S.

WILL REMOVE POPS NORTH SINCE OUTFLOW BOUNDARY HAS DRIED OUT THE
LOWER LEVELS AND APPARENT AP IN RADAR IMAGERY POINTS TOWARDS SOME
STABILITY NOW ACROSS THAT AREA. WILL ADD ISOLATED POP WORDING SOUTH
DUE TO CONTINUED DEVELOPMENT.

06

.LCH...
LA...NONE.
TX...OZONE ACTION DAY SUNDAY-JEFFERSON/ORANGE/HARDIN CO.

.PRELIM NUMBERS...
BPT 75/95/75/93 1323
LCH 74/95/75/93 1323
LFT 74/95/75/93 1323
AEX 74/98/72/95 2323

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 4:58 AM CDTSevere Thunderstorm WarningLCHAvoyelles62 min
Jul 23, 1:17 PM CDTSevere Thunderstorm WarningLCHBeauregard58 min
Jul 23, 1:22 PM CDTSevere Thunderstorm WarningLCHCalcasieu53 min
Jul 23, 1:57 PM CDTSevere Thunderstorm WarningLCHCameron63 min
Jul 23, 2:14 PM CDTSevere Thunderstorm WarningLCHCalcasieu31 min
Jul 23, 2:47 PM CDTSevere Thunderstorm WarningLCHIberia, St. Mary58 min
Jul 23, 3:13 PM CDTSevere Thunderstorm WarningLCHCameron32 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; radar from the NEXRAD Level II archive.