Alert archive / Louisiana / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 106, NWS Lake Charles, LA
NWS Lake Charles, LA issued this severe thunderstorm warning at Apr 23, 2000, 9:30 AM CDT for Vernon Parish, Louisiana. It was in force for 45 min. 1 report 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
- Apr 23, 2000, 9:30 AM CDT (14:30 UTC)
- Expired
- Apr 23, 2000, 10:15 AM CDT
- In force
- 45 min
- Issued by
- NWS Lake Charles, LA
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Vernon Parish, LA
The radar
The Ft Polk radar (KPOE), 28 km from the middle of the area, began a volume at 14:32 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 23, 9:35 AM CDT | Hail 1.75 | Leesville, 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, 2.5 hours before the alert went out and 123 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 833 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 212 m²/s²
- 0-3 km storm-relative helicity
- 332 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
613 WUUS54 KLCH 231432 SVRLCH LAC115-231515- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LAKE CHARLES LA 930 AM CDT SUN APR 23 2000 THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... VERNON PARISH IN SOUTHWEST LOUISIANA * UNTIL 1015 AM CDT * AT 926 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES SOUTHWEST OF ANACOCO...MOVING EAST AT 55 MPH. * THIS STORM WILL BE NEAR... SLAGLE BY 945 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. LAT...LON 3125 9347 3108 9342 3118 9292 3135 9302
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 Apr 23, 9:30 AM CDT, 0 minutes earlier.
Area forecast discussion, Apr 23, 9:30 AM CDT, 0 minutes before
SOUTHEAST TEXAS AND SOUTHWEST LOUISIANA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAKE CHARLES LA 930 AM CDT SUN APR 23 2000 SATELLITE IMAGERY SHOWING MOST OF THE EARLY THUNDERSTORM ACTIVITY MOVING RAPIDLY...50 MPH...EASTWARD OUT OF AREA. ATMOSPHERE HAS HAD TENDENCY TO INDICATE EXPLOSIVE GROWTH OF THUNDERSTORMS TO SEVERE LEVELS. WILL CONTINUE TO KEEP SEVERE THUNDERSTORM WORDING INTO FORECAST AND UP POPS TO CHC ALL AREAS. MAIN CONCERN IS DRYLINE OR MOIST/DRY BOUNDRY FROM WICHITA FALLS TO DEL RIO. THERE IS A MARKED GRADIENT WHERE THUNDERSTORMS WILL LIKELY DEVELOP AND MOVE RAPIDLY EAST THIS AFTERNOON. INSTABILITIES WILL REMAIN HIGH OR VERY UNSTABLE WITH SIGNIFICANT LOW AND MID LEVEL MOISTURE ON LCH/CRP SOUNDINGS. CAPPING LOOKS STRONG BUT SQUALL LINE DEVELOPMENT OUT WEST AND RAPID MOVEMENT TO THE EAST WILL LIKELY NEGATE THE CAPPING EFFECT. IN ADDITION...APPEARS TO BE FAVORABLE WIND AND SPEED SHEAR ENVIRONMENT FOR SUPERCELL GROWTH. A 90 KNOT JET WILL EXIST NORTH OF THE AREA WITH RIGHT REAR QUADRANT POSSIBLY IN LINE WITH CWA. 06 .LCH...NONE LA...NONE. TX...NONE. PRELIMINARY NUMBERS... LCH 82/64/85/59 4--0 LFT 79/63/85/58 42-0 AEX 82/60/85/54 5--0 BPT 83/62/87/59 4--0
In the hours before
Local storm report, Apr 23, 8:20 AM CDT, 1 hour 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES, LA
820 AM CDT SUN APR 23 2000
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0820 AM VOTAW TX .75 INCH HAIL
04/23/00 HARDINThe office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 12:05 PM CDT | Severe Thunderstorm Warning | LCH | Avoyelles | 55 min |
| Apr 23, 2:06 PM CDT | Severe Thunderstorm Warning | LCH | Vermilion | 54 min |
| Apr 23, 3:22 PM CDT | Severe Thunderstorm Warning | LCH | Saint Martin | 68 min |
| Apr 23, 3:30 PM CDT | Severe Thunderstorm Warning | LCH | Lafayette | 60 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.