Alert archive / Louisiana / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 169, NWS Lake Charles, LA

December 13, 2001Vernon Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Dec 13, 2001, 9:30 AM CST 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: Dec 13, 2001, 9:30 AM CST (15:30 UTC)
Expired: Dec 13, 2001, 10:30 AM CST
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, 3.5 hours before the alert went out and 108 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: 47 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 514 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -63 m²/s²
0-3 km storm-relative helicity: 45 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.

025 
WUUS54 KLCH 131531
SVRLCH
LAC115-131630-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
930 AM CST THU DEC 13 2001

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  VERNON PARISH IN WEST CENTRAL LOUISIANA

* UNTIL 1030 AM CST

* AT 926 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 26 MILES SOUTHWEST OF LEESVILLE...MOVING
  NORTHEAST AT 20 MPH.

* THIS STORM WILL BE NEAR...
  EVANS BY 945 AM CST
  BURR FERRY BY 1000 AM CST
  NEW LLANO BY 1025 AM CST
  LEESVILLE...ANACOCO BY 1030 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 3106 9352 3092 9353 3091 9345 3120 9308
          3132 9332

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 Dec 13, 3:15 AM CST, 6 hours 15 minutes earlier.

Area forecast discussion, Dec 13, 3:15 AM CST, 6 hours 15 minutes before

SOUTHWEST LOUISIANA AND SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
315 AM CST THU DEC 13 2001

SUBTROPICAL CONNECTION SHOWING UP NICELY ON IR STLT THIS AM. BANDS
OF RAIN WITH SHWRS/TSTMS SWEEPING OUT OF THE CSTL WTRS OF SE TX AND
LA MOVG NE AND ACRS THE AREA. GULF FETCH WILL CONTINUE THROUGH THE
DAY TDY COMBINED WITH LOW LVL JET EXPECTED INTO THE AREA LATER THIS
MORNING AND MID LVL ENERGY FM THE WEST WILL GIVE ANOTHER ROUND OF
HEAVY RAINS TO THE AREA. SOME STORMS TDY PSBLY BECOMING SEVERE IN
ADDITION... WILL MENTION HEAVY RAINS IN THE ZONES AND ISSUE FFA FOR
A FEW LA PARISHES.

THE NW GULF REGION REMAINS IN THE WARM SLOT THIS AM W/ THE
APPROACH OF A COLD FRONT TO THE NW. FRONT LOOKS TO MOV INTO SE TX
EARLY THIS EVE FINALLY PUSHING INTO SOUTH CNTRL LA TWRDS MIDNIGHT.
RAINS FINALLY BREAK AS UPR UPR SUPPORT TO THE WEST LIFTS ACRS THE
AREA AND TO THE NE. WILL TAPER RAINS ACCORDINGLY.

COOLER AIR FILTERS IN BEHIND THIS LATEST SYS ON FRIDAY WITH SKIES
CLRG. VERY PROGRESSIVE PATTERN CONTINUES WITH ONLY A 36 TO 48 HR
WINDOW BEFORE THE NEXT BATCH OF SHWRS/TSTMS EXPECTED TO REENTER THE
FORECAST PACKAGE...ANOTHER FRONT DROPS QUICKLY OUT OF THE
ROCKIES.

TKS...NEW/HOU

.LCH...FLOOD WATCH...FFA....LAZ027>033-041>045-051>055-TODAY.

.PRELIM NUMBERS...
AEX 68/44/57/42/65/56  930017
BPT 69/48/58/47/68/60  910017
LCH 68/48/59/46/68/60  920017
LFT 71/47/59/46/68/60  9300-7

K. KUYPER

In the hours before

Special weather statement, Dec 13, 6:00 AM CST, 3 hours 30 minutes before

LAZ027>033-041>045-051>055-TXZ180>182-201-215-216-131600-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAKE CHARLES LA
600 AM CST THU DEC 13 2001

...HEAVY RAINS AND POSSIBLE SEVERE WEATHER TODAY...

AN UPPER LEVEL STORM SYSTEM OVER THE SOUTHWESTERN STATES WILL MOVE
EASTWARD TODAY. SOUTHERLY WINDS AHEAD OF THIS SYSTEM WILL BRING
ABUNDANT GULF MOISTURE ACROSS SOUTHEAST TEXAS...AS WELL AS SOUTHERN
AND CENTRAL LOUISIANA.

THIS RICH MOISTURE COMBINED WITH ENERGY FROM A STORM SYSTEM TO THE
WEST WILL PRODUCE WIDESPREAD SHOWERS AND THUNDERSTORMS. RAINFALL
AMOUNTS WILL AVERAGE BETWEEN 2 AND 3 INCHES WITH LOCALIZED AMOUNTS UP
TO 4 INCHES POSSIBLE TODAY. THE LAKE CHARLES WEATHER OFFICE HAS
ALREADY RECEIVED OVER TWO INCHES OF RAIN SINCE MIDNIGHT.

WINDS WILL FAVOR THUNDERSTORMS TO DEVELOP AND MOVE OVER THE SAME
AREAS FOR LONG PERIODS OF TIME. BECAUSE RELATIVELY MOIST GROUNDS
ALREADY EXIST ACROSS THE AREA...THESE RAINFALL AMOUNTS WILL INCREASE
THE CHANCE FOR FLOODING.

ALL INTERESTS LIVING IN FLOOD PRONE AREAS ALONG RIVERS...STREAMS...
CREEKS AND BAYOUS SHOULD CLOSELY MONITOR THIS WEATHER SITUATION OVER
THE NEXT COUPLE OF DAYS.

IN ADDITION...UPPER LEVEL CONDITIONS WILL BECOME FAVORABLE FOR THE
DEVELOPMENT OF LARGE HAIL AND STRONG WINDS WITH SOME OF THE
THUNDERSTORMS TODAY.

STAY TUNED TO YOUR WEATHER RADIO OR LOCAL MEDIA FOR THE LATEST
WEATHER INFORMATION.

K. KUYPER

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 13, 11:33 AM CST	Severe Thunderstorm Warning	LCH	Vernon	57 min
Dec 13, 3:08 PM CST	Severe Thunderstorm Warning	LCH	Vernon	67 min
Dec 13, 3:13 PM CST	Flash Flood Warning	LCH	Vernon	4 hr
Dec 13, 3:25 PM CST	Special Marine Warning	LCH		65 min
Dec 13, 3:25 PM CST	Special Marine Warning	LCH		65 min
Dec 13, 4:26 PM CST	Severe Thunderstorm Warning	LCH	Cameron	49 min
Dec 13, 4:35 PM CST	Severe Thunderstorm Warning	LCH	Allen	55 min
Dec 13, 5:29 PM CST	Special Marine Warning	LCH		61 min
Dec 13, 5:29 PM CST	Special Marine Warning	LCH		61 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.