Alert archive / Texas / Tornado Warnings in 1997
Tornado Warning 9, NWS Shreveport, LA
NWS Shreveport, LA issued this tornado warning at Apr 4, 1997, 3:23 PM CST for Shelby County, Texas. It was in force for 37 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 4, 1997, 3:23 PM CST (21:23 UTC)
- Expired
- Apr 4, 1997, 4:00 PM CST
- In force
- 37 min
- Issued by
- NWS Shreveport, LA
- Area
- Whole counties
County Shelby County, TX
The radar
The Shreveport radar (KSHV), 79 km from the middle of the area, began a volume at 21:24 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 4, 3:40 PM CST | Thunderstorm Wind 60 | Joaquin, TX | Several large trees toppled in town. |
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 4, 2:15 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 12:00Z, 9.4 hours before the alert went out and 85 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 533 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 154 m²/s²
- 0-3 km storm-relative helicity
- 237 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSHV 042123 RRA TORSHV TXC419-042200- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SHREVEPORT LA 323 PM CST FRI APR 4 1997 THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 400 PM CST FOR THE FOLLOWING AREA... IN NORTHEAST TEXAS ...NORTHWESTERN SHELBY COUNTY AT 221 PM CDT...DOPPLER RADAR INDICATED A POSSLBLE TORNADO 3 MILES SOUTHEAST OF TIMPSON MOVING NORTH NORTHEAST AT 40 MPH. THIS bTORNADO WILL MOVE NEAR TENEHA TEXAS BY 335 PM. IF YOU ARE IN A MOBILE HOME...GO TO A STORM SHELTER IF AVAILABLE. IF A STORM SHELTER IS NOT AVAILABLE...SEEK SHELTER IN A DITCH OR LOW SPOT.
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 4, 2:25 PM CST | Severe Thunderstorm Warning | SHV | Sabine, San Augustine | 35 min |
| Apr 4, 2:38 PM CST | Severe Thunderstorm Warning | SHV | Nacogdoches | 52 min |
| Apr 4, 2:55 PM CST | Severe Thunderstorm Warning | SHV | Shelby | 50 min |
| Apr 4, 3:36 PM CST | Tornado Warning | SHV | Panola | 39 min |
Nearby
Tornado Warnings in Texas, 1997Every tornado warning in 1997Tornadoes in 1997
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.