Alert archive / Louisiana / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 23, NWS Lake Charles, LA

March 9, 2001Vermilion Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Mar 9, 2001, 12:11 AM CST for Vermilion Parish, Louisiana. It was in force for 64 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 9, 2001, 12:11 AM CST (06:11 UTC)
Expired
Mar 9, 2001, 1:15 AM CST
In force
64 min
Issued by
NWS Lake Charles, LA
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Vermilion Parish, LA

The radar

The Lake Charles radar (KLCH), 88 km from the middle of the area, began a volume at 06:12 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.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 6.2 hours before the alert went out and 86 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 2001-03-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2001-03-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 148 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1108 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
148 m²/s²
0-3 km storm-relative helicity
259 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.

000 
WUUS54 KLCH 090611
SVRLCH
LAC113-090715-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1211 AM CST FRI MAR 9 2001

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  VERMILION PARISH IN SOUTHWEST LOUISIANA

* UNTIL 115 AM CST

* AT 1211 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM ALONG A LINE EXTENDING FROM 18 MILES SOUTHWEST
  OF KAPLAN TO 48 MILES SOUTHWEST OF KAPLAN...MOVING EAST AT 40 MPH.

* THIS STORM WILL BE NEAR...
  KLONDIKE BY 1220 AM CST
  KAPLAN BY 1225 AM CST
  ABBEVILLE BY 1240 AM CST
  ERATH BY 1245 AM CST

SEVERE THUNDERSTORMS PRODUCE WINDS IN EXCESS OF 60 MPH...DESTRUCTIVE
HAIL...DEADLY LIGHTNING AND TORRENTIAL RAIN.

DESTRUCTIVE WINDS CAN BE EXPECTED - TAKE COVER NOW! VEHICLES AND
MOBIL HOMES ARE NOT SAFE.

CALL 337-477-5285 TO REPORT SEVERE WEATHER TO TxHE WEATHER SERVICE.

LAT...LON 3000 9260 2959 9260 2958 9204 3003 9200

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 8, 8:20 PM CST, 3 hours 51 minutes earlier.

Area forecast discussion, Mar 8, 8:20 PM CST, 3 hours 51 minutes before
SOUTHEAST TEXAS AND SOUTHWEST LOUISIANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
820 PM CST THU MAR 8 2001

THE 500 MB TROUGH IS RAPIDLY MOVING SOUTHEAST OVER EASTERN TEXAS
THIS EVENING CAUSING A LINE OF THUNDERSTORMS...SOME HAVE BEEN
SEVERE...TO DEVELOPE OVER SOUTHEAST TEXAS THIS EVENING.  THIS LINE
CONTINUES TO MOVE EAST AND COULD BE INTO OUR AREA LATER TONIGHT.
WILL CONTINUE TO HAVE HIGH POPS IN THE FORECAST AND SOME POSSIBLE
SEVERE IN THE SOUTHERN ZONES.  THEREFORE...THE PREVIOUS FORECAST
PACKAGE LOOKS GOOD AT THIS TIME.  NO UPDATES NEEDED AT THIS TIME.

MARINE...BOY035 INDICATES A SOUTHEAST WIND OF 16 KNOTS WITH 5 FOOT
SEAS.  WILL KEEP SMALL CRAFT UP FOR TONIGHT.  WINDS WILL SWITCH FROM
THE NORTHWEST LATER TONIGHT WITH SEAS CONTINUING TO BE NEAR 6
FEET.

.LCH...SCA FOR GMZ450-455-470-475.

.PRELIM NUMBERS...
AEX 45/68/49/60/37 00+30
BPT 48/71/53/63/42 00+20
LCH 47/70/53/63/40 00+30
LFT 47/70/52/63/41 00+30

55

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 8, 10:14 PM CSTSevere Thunderstorm WarningLCHCalcasieu, Cameron61 min
Mar 9, 12:57 AM CSTSevere Thunderstorm WarningLCHLafayette, Saint Landry63 min
Mar 9, 1:22 AM CSTSevere Thunderstorm WarningLCHIberia, St. Mary53 min
Mar 9, 1:43 AM CSTTornado WarningLCHSt. Mary62 min
Mar 9, 2:00 AM CSTSevere Thunderstorm WarningLCHSaint Martin30 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; radar from the NEXRAD Level II archive.