Alert archive / Louisiana / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 99, NWS Lake Charles, LA
NWS Lake Charles, LA issued this severe thunderstorm warning at Jul 1, 2001, 4:30 PM CDT for Vernon Parish, Louisiana. It was in force for 60 min. No storm report in the archive falls 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.
The facts
- Issued
- Jul 1, 2001, 4:30 PM CDT (21:30 UTC)
- Expired
- Jul 1, 2001, 5:30 PM CDT
- In force
- 60 min
- Issued by
- NWS Lake Charles, LA
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Vernon Parish, LA
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 9.5 hours before the alert went out and 107 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
- 800 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 1198 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KLCH 012131 SVRLCH LAC115-012230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LAKE CHARLES LA 430 PM CDT SUN JUL 1 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... VERNON PARISH IN WEST CENTRAL LOUISIANA * UNTIL 530 PM CDT * AT 425 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 12 MILES SOUTH OF FORT POLK...MOVING NORTH AT 15 MPH. * THIS STORM WILL BE NEAR... FORT POLK...PICKERING BY 445 PM CDT NEW LLANO BY 455 PM CDT LEESVILLE BY 500 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 3090 9325 3089 9305 3136 9307 3136 9336
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 1, 2:45 PM CDT, 1 hour 45 minutes earlier.
Area forecast discussion, Jul 1, 2:45 PM CDT, 1 hour 45 minutes before
SOUTHWEST LOUISIANA AND SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAKE CHARLES LA 245 PM CDT SUN JUL 01 2001 WATER VAPOR IMAGERY THIS AFTERNOON SHOWS UPPER LEVEL LOW OVER THE NORTHWEST GULF DRIFTING TO THE WEST. MEANWHILE...CONVECTION HAS FLARED UP IN THE EASTERN HALF OF THE GULF WITH SLOWLY WESTWARD MOVING TROPICAL WAVE. RADAR CURRENTLY HAS A GOOD COVERAGE OF SHOWERS AND THUNDERSTORMS. CELL THIS MORNING PULSED TO SEVERE LIMITS IN JEFFERSON COUNTY AROUND THE NEDERLAND AREA. SINCE THEN...CELLS HAVE STAYED BELOW SEVERE LIMITS WITH HEAVY RAINFALL AND INTENSE LIGHTNING THE MAIN STORY. FORECAST PERIOD THROUGH TUESDAY NIGHT... UPPER LOW OVER THE NORTHWEST GULF WILL PUSH WESTWARD INTO TEXAS ON MONDAY AND INTO SOUTHWEST TEXAS BY THE END OF THE PERIOD. AS THE SYSTEM PUSHES WEST...WARMING IN THE MID LEVELS SHOULD TAKE PLACE THUS LESSENING THE LIKELIHOOD FOR SEVERE STORMS. HOWEVER...THIS WILL ALSO ALLOW TROPICAL WAVE IN EASTERN GULF TO GRADUALLY PUSH WESTWARD TOWARDS AND ACROSS THE FORECAST AREA DURING THE PERIOD WITH THE AXIS OF THE WAVE PASSING LATE MONDAY NIGHT INTO TUESDAY. WITH THE WAVE WILL COME A MORE SOUTHEASTERLY WIND PATTERN HELPING ENHANCE MOISTURE WITH PRECIPITABLE WATER VALUES NEARING 2 INCHES AND MEAN RELATIVE HUMIDITY VALUES OVER 75 PERCENT. THEREFORE...WILL CONTINUE LIKELY POP WORDING IN ZONES FOR THE NEXT COUPLE OF DAYS...ESPECIALLY FROM LATE MORNING TO SUNSET. HOWEVER... NOCTURNAL ACTIVITY IN THE COASTAL WATERS AND ALONG THE COAST WILL BE POSSIBLE AS THE WAVE APPROACHES. WITH THE DEEP TROPICAL MOISTURE EXPECTED TO BE IN PLACE WILL MENTION THE POSSIBILITY OF HEAVY RAINFALL IN THE ZONES. EXTENDED...AS SYSTEM MOVES TO THE WEST OF THE AREA ON WEDNESDAY... SHOULD SEE LESS ACTIVITY. HOWEVER...WILL KEEP A MENTION OF SHOWERS AND THUNDERSTORMS IN THE FORECAST FOR EACH DAY. .LCH...NONE. .PRELIM NUMBERS... BPT 72/88/73/87/73 26363 LCH 71/87/72/87/72 26363 LFT 71/87/71/87/72 36463 AEX 69/89/70/88/70 26262 7-RUA
In the hours before
Local storm report, Jul 1, 10:31 AM CDT, 5 hours 59 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES, LA
1031 AM CDT SUN JUL 1 2001
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1025 AM NEDERLAND TX .75 INCH HAIL
07/01/01 JEFFERSON STEADY DIME SIZE HAIL
REPORTED BY PUBLICThe office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 3:15 PM CDT | Severe Thunderstorm Warning | LCH | Calcasieu | 30 min |
| Jul 1, 3:36 PM CDT | Severe Thunderstorm Warning | LCH | Beauregard | 39 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; the sounding from the Mesonet's radiosonde archive.