Alert archive / Texas / Tornado Warnings in 2000

Tornado Warning 17, NWS Shreveport, LA

April 23, 2000Gregg County, Texas

NWS Shreveport, LA issued this tornado warning at Apr 23, 2000, 4:20 PM CDT for Gregg County, Texas. It was in force for 40 min. 1 report 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, 4:20 PM CDT (21:20 UTC)
Expired
Apr 23, 2000, 5:00 PM CDT
In force
40 min
Issued by
NWS Shreveport, LA
Area
Whole counties

County Gregg County, TX

The radar

The Shreveport radar (KSHV), 92 km from the middle of the area, began a volume at 21:20 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

TimeReportWhereRemark
Apr 23, 4:30 PM CDTHail 1.75Judson, TX

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 nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 9.3 hours before the alert went out and 100 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-pSkew-T log-p diagram, Shreveport, LA at 12:00Z on 2000-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Shreveport, LA at 12:00Z on 2000-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 271 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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.

990 
WFUS54 KSHV 232123
TORSHV
TXC183-232200-

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

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN GREGG COUNTY IN TEXAS

* UNTIL 500 PM CDT

* AT 420 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A POSSIBLE TORNADO 4 MILES NORTHWEST OF LONGVIEW...MOVING          
  EAST NEAR 20 MPH.

* THIS TORNADO WILL MOVE NEAR LONGVIEW AND JUDSON

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...
  NORTHWESTERN GREGG COUNTY IN TEXAS
UNTIL 500 PM CDT.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 23, 8:38 AM CDTSevere Thunderstorm WarningSHVSan Augustine37 min
Apr 23, 8:55 AM CDTSevere Thunderstorm WarningSHVSabine, Shelby50 min
Apr 23, 3:18 PM CDTSevere Thunderstorm WarningSHVTitus57 min
Apr 23, 3:31 PM CDTTornado WarningSHVTitus59 min
Apr 23, 3:48 PM CDTSevere Thunderstorm WarningSHVCamp27 min
Apr 23, 3:50 PM CDTTornado WarningSHVMorris40 min
Apr 23, 4:00 PM CDTSevere Thunderstorm WarningSHVUpshur60 min
Apr 23, 4:05 PM CDTTornado WarningSHVCass55 min
Apr 23, 4:16 PM CDTSevere Thunderstorm WarningSHVGregg44 min
Apr 23, 4:33 PM CDTTornado WarningSHVHarrison57 min
Apr 23, 4:55 PM CDTTornado WarningSHVCass35 min
Apr 23, 5:17 PM CDTTornado WarningSHVPanola58 min
Apr 23, 5:26 PM CDTTornado WarningSHVHarrison19 min
Apr 23, 6:21 PM CDTSevere Thunderstorm WarningSHVMarion24 min

Nearby

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