Alert archive / Louisiana / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 48, NWS Lake Charles, LA
NWS Lake Charles, LA issued this severe thunderstorm warning at Mar 30, 2000, 12:06 AM CST for Avoyelles Parish, Louisiana. It was in force for 54 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
- Mar 30, 2000, 12:06 AM CST (06:06 UTC)
- Expired
- Mar 30, 2000, 1:00 AM CST
- In force
- 54 min
- Issued by
- NWS Lake Charles, LA
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Avoyelles Parish, LA
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 6.1 hours before the alert went out and 164 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
- 1634 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 751 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- -42 m²/s²
- 0-3 km storm-relative helicity
- -38 m²/s²
- Significant tornado parameter
- -0.5
- Supercell composite
- -2.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KLCH 300607 SVRLCH LAC009-300700- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LAKE CHARLES LA 1206 AM CST THU MAR 30 2000 THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... AVOYELLES PARISH IN CENTRAL LOUISIANA * UNTIL 100 AM CST * AT 1155 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 15 MILES NORTHWEST OF MARKSVILLE...MOVING SOUTHEAST AT 25 MPH. * LOCATIONS IN THE WARNING INCLUDE BORDELONVILLE...EFFIE...HAMBURG... MARKSVILLE AND MOREAUVILLE HAIL TO THE SIZE OF QUARTERS CAN BE EXPECTED. CALL 337-477-5285 TO REPORT SEVERE WEATHER TO THE WEATHER SERVICE. LAT...LON 3134 9216 3115 9222 3094 9185 3119 9173
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 Mar 29, 8:54 PM CST, 3 hours 12 minutes earlier.
Area forecast discussion, Mar 29, 8:54 PM CST, 3 hours 12 minutes before
SOUTHEAST TEXAS AND SOUTHWEST LOUISIANA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAKE CHARLES LA 854 PM CST WED MAR 29 2000 RADAR SHOWS SCATTERED TO NUMEROUS THUNDERSTORMS MOVING EAST-SOUTHEAST ACROSS NORTHERN LOUISIANA. EXPECT SCATTERED SHOWERS AND THUNDERSTORMS TO MOVE INTO CENTRAL LOUISIANA LATER TONIGHT. A FEW STORMS MAY AFFECT INTERIOR SECTIONS OF SOUTHEAST TEXAS. WILL INCREASE POPS INTO CHANCE CATEGORY FOR WEST-CENTRAL LOUISIANA. WITH COOLER AIR EXPECTED TO SPREAD ACROSS THE AREA BEHIND FRONT BY MORNING...LOW TEMPERATURE PREVIOUSLY FORECAST FOR TONIGHT LOOK ABOUT RIGHT. .LCH...NONE. LA...NONE TX...NONE PREVIOUS DISCUSSION ...A TORNADO WATCH 134 IS NOW IN EFFECT FOR SOUTH CENTRAL LOUISIANA UNTIL 6 PM WED... .REMAINDER OF THIS AFTERNOON... THE SPECIAL AFTERNOON (18Z) SOUNDING DEPICTS A STRONGLY SHEARED ENVIRONMENT...THE ROTATIONAL POTENTIAL OF TSTMS IS RUNNING NEAR 200-250 M2 S-2. THE BULK RICHARDSON NUMBER IS 36...SUGGESTING THAT MULTI-CELLULAR CONVECTION IS MOST PROBABLE. THE FRICTION LAYER IS NEARLY NEUTRAL...DEPICTING AN ADIABATIC LAPSE RATE. I FURTHER MIX OUT THE MOISTURE PROFILE (DEW POINT) WITHIN THE LOWEST 100 MB. WITH THIS ADJUSTMENT...THE PARCEL METHOD ALGORITHM COMPUTES A LATENT INSTABILITY (CAPE) NEAR 2000 J PER KG. I AM LOOKING FOR SOME LIFT .FIRST PERIOD... ALL NUMERICAL GUIDANCES DEPICT A FRONTAL PASSAGE ACROSS THE CWA (COUNTY WARNING AREA)...ALTHOUGH IN VARYING DEGREES OF STRENGTH. THE REGIONAL MODEL (NGM) IS THE MOST ROBUST...DEPICTING VIGOROUS TRANSPORT AND MIXING DOWNWARD OF MOMENTUM AND DRIER AIR. THE ASSOCIATED MOS GUIDANCE COMPUTES LOW TEMPERATURES FROM THE MID 50S NORTH TO THE LOWER 60S SOUTH. THE GLOBAL MODEL (AVN) DEPICTS FEEBLE TRANSPORT AND MIXING DOWNWARD. THE ASSOCIATED PERFECT PROG (FAN) COMPUTES LOW TEMPERATURES FROM THE LOWER 60S NORTH TO THE MID 60S SOUTH. BASED ON THE CURRENT SATELLITE VIDEO...I LIKE THE AVN SOLUTION FOR TEMPERATURES AND POPS (PROBABILITY OF PRECIPITATION). .SECOND PERIOD... NORTHERLY WINDS ARE ADVECTING COOLER DRIER AIR INTO THE CWA. I BELIEVE THAT THE HIGH TEMPERATURES WILL BE REACHED NEAR NOON... THEN STEADILY FALL IN THE AFTERNOON. .THIRD PERIOD... NORTHERLY WINDS BECOME NORTHEASTERLY AS HIGH PRES BUILDS ACROSS THE CWA. COLD AIR ADVECTION RELAXES...LOCALIZED FORCING WILL ALLOW THE OVERNIGHT LOWS TO FALL INTO THE 50S. 21 .PREVIOUS NUMBERS... BPT 63/80/56/77 2000 LCH 62/80/55/76 2000 LFT 63/82/55/78 3000 AEX 60/75/52/75 3000
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; the sounding from the Mesonet's radiosonde archive.