Alert archive / Louisiana / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 109, NWS Lake Charles, LA
NWS Lake Charles, LA issued this severe thunderstorm warning at Aug 18, 2001, 4:36 PM CDT for Vernon Parish, Louisiana; Newton County, Texas. It was in force for 54 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
- Aug 18, 2001, 4:36 PM CDT (21:36 UTC)
- Expired
- Aug 18, 2001, 5:30 PM CDT
- In force
- 54 min
- Issued by
- NWS Lake Charles, LA
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Vernon Parish, LA, Newton County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 18, 4:40 PM CDT | Hail 0.75 | Newton, TX |
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, 9.6 hours before the alert went out and 102 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
- 2452 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 779 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
793 WUUS54 KLCH 182137 SVRLCH LAC115-TXC351-182230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LAKE CHARLES LA 436 PM CDT SAT AUG 18 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NEWTON COUNTY IN SOUTHEAST TEXAS VERNON PARISH IN WEST CENTRAL LOUISIANA * UNTIL 530 PM CDT * AT 431 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES SOUTH OF BURKEVILLE...MOVING NORTHEAST AT 10 MPH. * THIS STORM WILL BE NEAR... WIERGATE BY 455 PM CDT BURKEVILLE BY 505 PM CDT EVANS BY 530 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 3095 9380 3081 9366 3092 9343 3110 9359
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 18, 2:41 PM CDT, 1 hour 55 minutes earlier.
Area forecast discussion, Aug 18, 2:41 PM CDT, 1 hour 55 minutes before
SOUTHWEST LOUISIANA AND SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAKE CHARLES LA 241 PM CDT SAT AUG 18 2001 NOT MUCH ACTION ON THE RADAR SCREEN ATTM...MOST T-STORM ACTIVITY STAYING TO THE NORTH...ALTHOUGH AEX/ESF HAD SOME GUSTY 30 MPH WINDS ASSOCIATED WITH ONE STORM. TEMPS MAINLY IN THE LOWER 90S...EXCEPT IN THE RAIN-COOLED AREA NORTH WHERE TEMPS ARE IN THE 70S. TONIGHT...EXPECTING NOCTURNAL MCS TO DEVELOP ALONG SFC BOUNDARY IN NORTHERN PART OF LCH CWA...BRINGING THE CHANCE OF T-STORMS TO THE LAKES REGION OF E TX AND CEN LA OVERNIGHT. WILL CARRY SMALL POPS DOWN TO I-10 CORRIDOR OF BPT-LCH-LFT. THE COMBINATION OF SFC BOUNDARY AND MID LEVEL SPEED MAX/VORT MAX (SEEN ON 315/325 K SFC) SHOULD BE THE FOCUSING MECHANISM. THIS MID-LEVEL FEATURE SAGS TO THE SOUTH ON SUNDAY...SO WILL CARRY POPS ACROSS THE REGION SUNDAY. DO NOT ANTICIPATE SEVERE WEATHER WITH MID-LEVEL LAPSE RATES AND DRY AIR ENTRAINMENT SMALL. TEMPS SHOULD BE A LITTLE LOWER WITH CLOUD COVER AND PRECIP SHIELD...SO WILL GO UPPER 80S TO LOWER 90S. BY MONDAY...DRIER AIR IN PLACE...AS WILL THE HOT TEMPS. COULD SEE SOME PLACES CROSS THE 100 DEGREE MARK WITH SW WINDS. WILL NEED TO MONITOR FOR POSSIBLE HEAT ADVISORY BY MONDAY. THE HOT WEATHER SHOULD HOLD ON FOR SEVERAL DAYS...DEPENDING ON THE FUTURE TRACK OF TS CHANTAL. OTHERWISE THE NEXT THREAT OF RAIN LOOKS TO BE TOWARDS THE END OF THE WEEK. THANKS TO HGX/NEW FOR COASTAL WATERS COORDINATION. .LCH...NONE .PRELIM NUMBERS... AEX 72/90/72/97/72 34111 BPT 75/92/75/95/75 13111 LCH 75/91/75/94/75 23111 LFT 75/92/75/95/75 23111
Nearby
Severe Thunderstorm Warnings in Louisiana, 2001Severe Thunderstorm Warnings in Texas, 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.