Alert archive / Louisiana / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 157, NWS Lake Charles, LA

November 28, 2001Cameron Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Nov 28, 2001, 3:36 AM CST for Cameron 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: Nov 28, 2001, 3:36 AM CST (09:36 UTC)
Expired: Nov 28, 2001, 4:30 AM CST
In force: 54 min
Issued by: NWS Lake Charles, LA
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Cameron Parish, LA

The radar

The Lake Charles radar (KLCH), 44 km from the middle of the area, began a volume at 09:36 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, 9.6 hours before the alert went out and 45 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: 1018 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 497 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 199 m²/s²
0-3 km storm-relative helicity: 256 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.1

Open this sounding in Storm Lab

The text

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

415 
WUUS54 KLCH 280938
SVRLCH
LAC023-281030-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
336 AM CST WED NOV 28 2001

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

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

* UNTIL 430 AM CST

* AT 331 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 4 MILES NORTHEAST OF JOHNSON BAYOU...MOVING
  NORTHEAST AT 20 MPH.

* THIS STORM WILL BE NEAR...
  SABINE NATIONAL WILDLIFE REFUGE BY 345 AM CST
  HACKBERRY BY 415 AM CST

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 2983 9375 2970 9360 2994 9330 3010 9348

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 28, 2:45 AM CST, 51 minutes earlier.

Area forecast discussion, Nov 28, 2:45 AM CST, 51 minutes before

SOUTHWEST LOUISIANA AND SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
245 AM CST WED NOV 28 2001

NEARLY STATIONARY FRONTAL SYSTEM BI-SECTING THE FORECAST AREA
THIS MORNING FROM KAEX TO KBPT. ABOUT A 20 DEGREE SPREAD ACROSS
THE BOUNDARY WITH TEMPS/DEWPOINTS IN THE 50S NORTH AND WEST
AND 70S TO THE SOUTH AND EAST OF THE FRONT.

MEANWHILE...AIRMASS REMAINS VERY MOIST ACROSS THE FORECAST AS
GOOD SOUTHERLY FETCH JUST ABOVE THE SURFACE. PWAT OVER 1.5 INCHES
WHICH IS CLOSE TO 200 PERCENT OF NORM. UPPER AIR ANALYSIS SHOWS
UPPER LEVEL DIVERGENCE CONTINUES ACROSS THE FORECAST AREA.

UPPER LOW OVER WEST TEXAS AND NORTHERN OLD MEXICO WILL MOVE SLOWLY
OFF TO THE EAST TODAY AND ACROSS THE FORECAST AREA ON THURSDAY.
THEREFORE...FRONTAL SYSTEM WILL MAKE ONLY SLOW PROGRESS TO THE
EAST TODAY AND NOT CLEAR THE FORECAST AREA UNTIL THURSDAY.

THUS...MOIST ATMOSPHERE...GOOD LOW LEVEL CONVERGENCE AND UPPER LEVEL
DIVERGENCE MEANS HEAVY RAIN AND POSSIBLE FLOODING WILL CONTINUE AND
FLOOD WATCH WILL BE EXTENDED TO COVER THE ENTIRE FORECAST AREA.
HEAVIEST RAINS AND SEVERE THREAT DURING THE MORNING HOURS WILL BE
JUST ALONG AND NORTH OF THE FRONTAL SYSTEM. DURING THE AFTERNOON AND
TONIGHT THIS AREA WILL SHIFT TO SOUTH CENTRAL LOUISIANA AS THAT AREA
WILL BE IN THE WARM SECTOR AS SURFACE LOW MOVES ACROSS.

LOOKS LIKE PRECIP AND CLEARING SHOULD BEGIN OVER SOUTHEAST TEXAS ON
EARLY THURSDAY AFTERNOON AND OVER THE REMAINDER OF THE AREA LATE
THURSDAY AFTERNOON INTO EVENING.

COOLEST TEMPS SHOULD OCCUR ON FRIDAY MORNING WITH A SLIGHT
MODERATION IN TEMPS OVER THE WEEKEND.

7-RUA

.PRELIM NUMBERS...
AEX 61/45/50/34/58/38 +98000
BPT 59/49/52/37/60/42 +95000
LCH 72/52/55/36/59/41 +97000
LFT 77/57/59/37/58/41 898000

.LCH...FLOOD WATCH TODAY...ENTIRE FORECAST AREA

In the hours before

Local storm report, Nov 27, 11:40 PM CST, 3 hours 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES, LA
1140 PM CST TUE NOV 27 2001

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1105 PM    2 SE SINGER               LA   WIND DAMAGE
11/27/01   BEAUREGARD                     BEAUREGARD ELECTRIC
                                          REPORTS POWER OUTAGES
                                          BETWEEN SINGER AND
                                          LONGVILLE ALONG HIGHWAY
                                          110.

DML

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 27, 11:03 PM CST	Severe Thunderstorm Warning	LCH	Beauregard	57 min
Nov 27, 11:14 PM CST	Special Marine Warning	LCH		2 hr
Nov 27, 11:14 PM CST	Special Marine Warning	LCH		2 hr
Nov 28, 1:12 AM CST	Special Marine Warning	LCH		63 min
Nov 28, 1:12 AM CST	Special Marine Warning	LCH		63 min
Nov 28, 2:10 AM CST	Special Marine Warning	LCH		65 min
Nov 28, 4:24 AM CST	Tornado Warning	LCH	Cameron	36 min
Nov 28, 4:37 AM CST	Tornado Warning	LCH	Calcasieu	53 min
Nov 28, 10:37 AM CST	Tornado Warning	LCH	Beauregard, Calcasieu	53 min
Nov 28, 1:29 PM CST	Special Marine Warning	LCH		61 min
Nov 28, 1:47 PM CST	Severe Thunderstorm Warning	LCH	Rapides	58 min
Nov 28, 3:10 PM CST	Severe Thunderstorm Warning	LCH	Calcasieu	65 min
Nov 28, 3:53 PM CST	Severe Thunderstorm Warning	LCH	Allen, Jefferson Davis	67 min
Nov 28, 4:54 PM CST	Severe Thunderstorm Warning	LCH	Rapides	66 min
Nov 28, 5:28 PM CST	Severe Thunderstorm Warning	LCH	Beauregard	62 min
Nov 28, 5:48 PM CST	Special Marine Warning	LCH		57 min
Nov 28, 5:48 PM CST	Special Marine Warning	LCH		57 min
Nov 28, 5:48 PM CST	Special Marine Warning	LCH		57 min
Nov 28, 5:48 PM CST	Special Marine Warning	LCH		57 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.