Alert archive / Louisiana / Tornado Warnings in 2000

Tornado Warning 28, NWS Shreveport, LA

April 23, 2000Webster Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at Apr 23, 2000, 6:09 PM CDT for Webster Parish, Louisiana. It was in force for 66 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, 6:09 PM CDT (23:09 UTC)
Expired: Apr 23, 2000, 7:15 PM CDT
In force: 66 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 23:11 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, 6:20 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.
Apr 23, 7:05 PM CDT	Hail 0.75	Springhill, LA

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, 11.2 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.

151 
WFUS54 KSHV 232312
TORSHV
LAC119-240015-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
609 PM CDT SUN APR 23 2000

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  WEBSTER PARISH IN LOUISIANA

* UNTIL 715 PM CDT

* AT 609 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A TORNADO 5 MILES WEST OF COTTON VALLEY. A TORNADO                 
  HAS BEEN REPORTED WITH THIS THUNDERSTORM EARLIER IN                
  NORTHERN BOSSIER PARISH. THIS THUNDERSTORM IS MOVING EAST NEAR 20  
  MPH. 

  IF YOUR IN THE COTTON VALLEY OR SAREPTA AREA...TAKE COVER          
  IMMEDIATELY.

DURING A TORNADO...SEEK SHELTER IN AN INTERIOR HALLWAY OR ROOM ON THE
LOWEST FLOOR OF YOUR HOME OR BUSINESS. GET UNDER A WORKBENCH OR OTHER
PIECE OF STURDY FURNITURE. USE BLANKETS OR PILLOWS TO COVER YOUR BODY
AND ALWAYS STAY AWAY FROM WINDOWS.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
FOR...
  WEBSTER PARISH IN LOUISIANA
UNTIL 715 PM CDT.

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, 5:58 PM CDT	Severe Thunderstorm Warning	SHV	Webster	32 min
Apr 23, 6:07 PM CDT	Severe Thunderstorm Warning	SHV	De Soto	53 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

Tornado Warnings in Louisiana, 2000 Every tornado warning in 2000 Tornadoes 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.