Alert archive / Texas / Tornado Warnings in 1997
Tornado Warning 13, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this tornado warning at Apr 4, 1997, 2:05 PM CST for Trinity County, Texas. It was in force for 60 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 4, 1997, 2:05 PM CST (20:05 UTC)
- Expired
- Apr 4, 1997, 3:05 PM CST
- In force
- 60 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
County Trinity County, TX
The radar
The Houston radar (KHGX), 180 km from the middle of the area, began a volume at 20:09 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, 2:30 PM CST | Tornado F0 | Pennington, TX | |
| Apr 4, 2:50 PM CST | Tornado F0 | Nogalus, 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, 8.1 hours before the alert went out and 203 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 KHOU 042005 RRA TORHOU TXC455-042105- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 205 PM CDT FRI APR 4 1997 THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 305 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST TEXAS ...TRINITY COUNTY AT 2 PM...RADAR INDICATED A POSSIBLE TORNADO 4 MILES SOUTHEAST OF TRINITY MOVING TOWARD THE NORTHEAST AT 40 MPH. GROVETON IS IN THE PATH OF THIS STORM. IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A BASEMENT. GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SAFETY IN AN INTERIOR ROOM SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS...OR CUSHIONS TO COVER YOUR BODY. AVOID WINDOWS.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 4, 2:59 AM CST | Flash Flood Warning | HGX | Jackson | 2 hr |
| Apr 4, 3:04 AM CST | Tornado Warning | HGX | Jackson | 56 min |
| Apr 4, 3:39 AM CST | Flash Flood Warning | HGX | Wharton | 3 hr |
| Apr 4, 4:32 AM CST | Flash Flood Warning | HGX | Fort Bend | 3 hr |
| Apr 4, 4:49 AM CST | Flash Flood Warning | HGX | Jackson | 116 min |
| Apr 4, 5:35 AM CST | Flash Flood Warning | HGX | Harris | 115 min |
| Apr 4, 6:32 AM CST | Flash Flood Warning | HGX | Liberty | 118 min |
| Apr 4, 7:29 AM CST | Flash Flood Warning | HGX | Harris | 2 hr |
| Apr 4, 1:40 PM CST | Tornado Warning | HGX | Houston | 60 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.