Alert archive / Louisiana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 161, NWS Shreveport, LA

April 23, 2000Webster Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 23, 2000, 5:58 PM CDT for Webster Parish, Louisiana. It was in force for 32 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 23, 2000, 5:58 PM CDT (22:58 UTC)
Expired: Apr 23, 2000, 6:30 PM CDT
In force: 32 min
Issued by: NWS Shreveport, LA
Area: Whole counties

County Webster Parish, LA

The radar

The Shreveport radar (KSHV), 56 km from the middle of the area, began a volume at 23:00 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.

What was reported inside it

Time	Report	Where	Remark
Apr 23, 6:05 PM CDT	Thunderstorm Wind 55 E	Cotton Vly, LA	Numerous trees down.
Apr 23, 6:20 PM CDT	Tornado F2	Minden, LA	About 200 houses suffered roof damage and numerous trees were either uprooted or snapped. Tree damage occurred up to 1 mile either side of the tornado track.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 23, 4:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 11.0 hours before the alert went out and 47 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 721 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 271 m²/s²
0-3 km storm-relative helicity: 416 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

372 
WUUS54 KSHV 232301
SVRSHV
LAC119-232330-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
558 PM CDT SUN APR 23 2000

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEBSTER PARISH IN LOUISIANA

* UNTIL 630 PM CDT

* AT 558 PM CDT...THE SHREVEPORT NATIONAL WEATHER SERVICE DOPPLER 
 RADAR INDICATED A SEVERE THUNDERSTORM MOVING TOWARD COTTON VALLEY. 
 THIS IS A LARGE STORM WHICH MAY THREATEN MINDEN AFTER 630 PM.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH
LITTLE OR NO ADVANCE WARNING.

THIS THUNDERSTORM IS CAPABLE OF PRODUCING EXTREMELY LARGE HAIL UP TO 
2 INCHES IN DIAMETER WHICH MAY CAUSE SEVERE DAMAGE TO PROPERTY AND 
SERIOUS INJURY TO PEOPLE AND LIVESTOCK. GO TO AN INTERIOR ROOM OF A 
STRONG BUILDING. STAY AWAY FROM WINDOWS.

REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE
THUNDERSTORM WARNING FOR...
  WEBSTER PARISH IN LOUISIANA
UNTIL 630 PM CDT.

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 Shreveport, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 23, 3:07 PM CDT, 2 hours 51 minutes earlier.

Area forecast discussion, Apr 23, 3:07 PM CDT, 2 hours 51 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
307 PM CDT SUN APR 23 2000

MAIN EVENT UNDERWAY AS DRY LINE PROGRESSES ACROSS NORTHEAST TX AND
SOUTHEAST OK. THIS SYSTEM APPEARS THAT IT WILL MAKE A STEADY PUSH
ACROSS THE AREA TONIGHT WITH LITTLE IN THE WAY OF PRECIP MONDAY
EXCEPT MAYBE EARLY SHOWERS EAST AND MAYBE FA TOMORROW. RATHER THAN
PONTIFICATING I WILL FINISH UP PRODUCTS AND FOCUS ON SVR WX.

BRIEFLY...NW FLOW WITH A SLUG OF MOISTURE PROGGED TO MOVE SOUTHEASTWARD
INTO NE TX TUESDAY SO WILL GO WITH 20 PERCENT CHANCES THERE. PARTLY
CLOUDIES WILL PERSIST THROUGH EXTENDED WITH WARM TEMPS ASSOCIATED
WITH UPPER RIDGE.

PRELIM FIRST GUESSES...

SHV 59/78/55/82/58 5100
MLU 61/77/55/78/56 7200
TXK 59/75/53/79/53 5101
TYR 57/79/54/81/57 3002
LFK 60/83/55/83/60 4101

.SHV...TORNADO WATCH TIL 7 PM FOR NE TX..SE OK..SW AR.

In the hours before

Local storm report, Apr 23, 2:43 PM CDT, 3 hours 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
242 PM CST SUN APR 23 2000

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

0225 PM    WRIGHT CITY               OK   .75 INCH HAIL
04/23/00   MCCURTAIN                      HAIL THE SIZE OF DIMES
                                          REPORT FROM LAW
                                          ENFORCEMENT

0228 PM    1 N WRIGHT CITY           OK   1 INCH HAIL
04/23/00   MCCURTAIN                      HAIL THE SIZE OF QUARTERS
                                          REPORT FROM LAW
                                          ENFORCEMENT

10

Local storm report, Apr 23, 2:50 PM CDT, 3 hours 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
250 PM CDT SUN APR 23 2000

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

0244 PM    1 S WRIGHT CITY           OK   1.75 INCH HAIL
04/23/00   MCCURTAIN                      REPORT FROM LAW ENFORCEMENT

15

Local storm report, Apr 23, 3:20 PM CDT, 2 hours 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
320 PM CDT SUN APR 23 2000

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

0258 PM    BROKEN BOW                OK   TORNADO
04/23/00   MCCURTAIN                      POSSIBLE TORNADO ON THE
                                          NORTHWEST SIDE OF BROKEN BOW
                                          REPORT FROM THE FIRE DEPARTMENT

15

Local storm report, Apr 23, 3:42 PM CDT, 2 hours 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
242 PM CST SUN APR 23 2000

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

0225 PM    WRIGHT CITY               OK   .75 INCH HAIL
04/23/00   MCCURTAIN                      HAIL THE SIZE OF DIMES
                                          REPORT FROM LAW
                                          ENFORCEMENT

0228 PM    1 N WRIGHT CITY           OK   1 INCH HAIL
04/23/00   MCCURTAIN                      HAIL THE SIZE OF QUARTERS
                                          REPORT FROM LAW
                                          ENFORCEMENT

10

Local storm report, Apr 23, 4:30 PM CDT, 1 hour 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
430 PM CDT SUN APR 23 2000

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

0425 PM    2 N LINDEN                TX   TORNADO
04/23/00   CASS                           TORNADO ON THE GROUND AND
                                          ROOFS BLOWN OFF OF HOMES                                    REPORT FROM THE FIRE DEPARTMENT
                                          REPORTED BY STORM SPOTTER

23

Local storm report, Apr 23, 5:51 PM CDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
451 PM CST SUN APR 23 2000

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

0340 PM    MOUNT PLEASANT            TX   1 INCH HAIL
04/23/00   TITUS                          QUARTER SIZE HAIL.
                                          REPORTED BY TRAINED
                                          SPOTTER.

0358 PM    5 W DE QUEEN              AR   .88 INCH HAIL
04/23/00   SEVIER                         NICKEL SIZE HAIL. REPORTED
                                          BY LAW ENFORCEMENT.

0405 PM    DAINGERFIELD              TX   .75 INCH HAIL
04/23/00   MORRIS                         REPORTED BY LAW
                                          ENFORCEMENT.

0410 PM    4 S GILMER                TX   .88 INCH HAIL
04/23/00   UPSHUR                         NICKEL SIZE HAIL. REPORTED
                                          BY LAW ENFORCEMENT.

0412 PM    HUGHES SPRINGS            TX   1 INCH HAIL
04/23/00   CASS                           QUARTER SIZE HAIL REPORTED
                                          BY LAW ENFORCEMENT.

0420 PM    MARIETTA                  TX   WIND DAMAGE
04/23/00   CASS                           WIND DAMAGE TO HOUSES.

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 23, 9:08 AM CDT	Severe Thunderstorm Warning	SHV	Sabine	52 min
Apr 23, 9:36 AM CDT	Severe Thunderstorm Warning	SHV	Natchitoches	54 min
Apr 23, 10:00 AM CDT	Severe Thunderstorm Warning	SHV	Grant	60 min
Apr 23, 10:30 AM CDT	Severe Thunderstorm Warning	SHV	LaSalle	30 min
Apr 23, 5:01 PM CDT	Tornado Warning	SHV	Caddo	59 min
Apr 23, 5:24 PM CDT	Tornado Warning	SHV	Bossier	66 min
Apr 23, 5:54 PM CDT	Tornado Warning	SHV	Caddo	66 min
Apr 23, 6:07 PM CDT	Severe Thunderstorm Warning	SHV	De Soto	53 min
Apr 23, 6:09 PM CDT	Tornado Warning	SHV	Webster	66 min
Apr 23, 6:13 PM CDT	Tornado Warning	SHV	De Soto	47 min
Apr 23, 6:23 PM CDT	Tornado Warning	SHV	Bossier	67 min
Apr 23, 6:26 PM CDT	Severe Thunderstorm Warning	SHV	Claiborne	64 min
Apr 23, 6:36 PM CDT	Tornado Warning	SHV	Bienville	54 min
Apr 23, 6:38 PM CDT	Tornado Warning	SHV	Claiborne	67 min
Apr 23, 6:58 PM CDT	Tornado Warning	SHV	De Soto	32 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2000 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.