Alert archive / Louisiana / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 155, NWS Lake Charles, LA

November 27, 2001Avoyelles Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Nov 27, 2001, 3:32 AM CST for Avoyelles Parish, Louisiana. It was in force for 43 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: Nov 27, 2001, 3:32 AM CST (09:32 UTC)
Expired: Nov 27, 2001, 4:15 AM CST
In force: 43 min
Issued by: NWS Lake Charles, LA
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Avoyelles Parish, LA

The radar

The Ft Polk radar (KPOE), 97 km from the middle of the area, began a volume at 09:33 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, 9.5 hours before the alert went out and 168 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2361 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 572 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 122 m²/s²
0-3 km storm-relative helicity: 146 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 8.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

666 
WUUS54 KLCH 270933
SVRLCH
LAC009-271015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
332 AM CST TUE NOV 27 2001

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  AVOYELLES PARISH IN CENTRAL LOUISIANA

* UNTIL 415 AM CST

* AT 332 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES SOUTH OF MARKSVILLE...MOVING NORTHEAST
  AT 30 MPH.

* THIS STORM WILL BE NEAR...
  MARKSVILLE BY 340 AM CST
  BORDELONVILLE BY 355 AM CST

THIS THUNDERSTORM IS CAPABLE OF PRODUCING VERY LARGE HAIL UP TO 
GOLFBALLS CAN BE EXPECTED...WHICH COULD CAUSE SIGNIFICANT DAMAGE TO 
PROPERTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM CST TUESDAY MORNING 
FOR SOUTHWESTERN LOUISIANA AND SOUTHEAST TEXAS. TORNADOES CAN FORM 
WITH LITTLE ADVANCED NOTICE.

DESTRUCTIVE WINDS OF 60 MPH CAN BE EXPECTED - TAKE COVER NOW 
VEHICLES AND MOBIL HOMES ARE NOT SAFE.

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

LAT...LON 3108 9218 3096 9205 3130 9158 3149 9180

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 Nov 26, 8:55 PM CST, 6 hours 37 minutes earlier.

Area forecast discussion, Nov 26, 8:55 PM CST, 6 hours 37 minutes before

SOUTHWEST LOUISIANA AND SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
855 PM CST MON NOV 26 2001

UPDATED ZONES FOR SVR WATCH 829. LOOKING AT THE CURRENT TRENDS...THE
FRONT WILL NOT MAKE IT TO INLAND SE TX UNTIL A COUPLE OF HOURS
BEFORE DAYBREAK BEFORE STALLING. UPDATED ALL ZONES FOR TEMPS...WINDS
AND POPS TONIGHT...AND WINDS/TEMPS THE NEXT TWO PERIODS TO BLEND
BETTER WITH CURRENT TRENDS AND FRONTAL POSITION.

.UPDATED NUMBERS...
AEX 67/72/60/62/40/55/32 4999300
BPT 67/70/57/60/37/56/37 6999300
LCH 70/73/60/65/40/56/36 3999300
LFT 68/74/66/70/50/56/36 3999300

.LCH...NONE.

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 27, 2:38 AM CST	Tornado Warning	LCH	Evangeline	52 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2001 Every 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.