Alert archive / Texas / Tornado Watches in 1997
Tornado Watch 50
The Storm Prediction Center issued this tornado watch at Feb 20, 1997, 3:30 PM CST for 49 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 20, 1997, 3:30 PM CST (21:30 UTC)
- Expired
- Feb 20, 1997, 9:00 PM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 49 counties
Anderson County, TX, Angelina County, TX, Bowie County, TX, Brazoria County, TX, Camp County, TX, Cass County, TX, Chambers County, TX, Cherokee County, TX, Delta County, TX, Fannin County, TX, Fort Bend County, TX, Franklin County, TX, Galveston County, TX, Gregg County, TX, Hardin County, TX, Harris County, TX, Harrison County, TX, Henderson County, TX, Hopkins County, TX, Houston County, TX, Hunt County, TX, Jasper County, TX, Jefferson County, TX, Lamar County, TX, Leon County, TX, Liberty County, TX, Madison County, TX, Marion County, TX, Montgomery County, TX, Morris County, TX, Nacogdoches County, TX, Orange County, TX, Panola County, TX, Polk County, TX, Rains County, TX, Red River County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Trinity County, TX, Tyler County, TX, Upshur County, TX, Van Zandt County, TX, Walker County, TX, Wood County, TX
The radar
The Shreveport radar (KSHV), 120 km from the middle of the area, began a volume at 21:31 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.
Warnings issued inside it
28 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 20, 3:59 PM CST | Flash Flood Warning | HGX | Madison | 2 hr |
| Feb 20, 4:15 PM CST | Flash Flood Warning | FWD | Hopkins, Rains | 4 hr |
| Feb 20, 4:15 PM CST | Flash Flood Warning | FWD | Delta | 4 hr |
| Feb 20, 4:25 PM CST | Flash Flood Warning | HGX | Montgomery, Walker | 3 hr |
| Feb 20, 4:25 PM CST | Flash Flood Warning | HGX | Houston | 3 hr |
| Feb 20, 4:47 PM CST | Severe Thunderstorm Warning | HGX | Fort Bend, Harris | 58 min |
| Feb 20, 5:00 PM CST | Flash Flood Warning | SHV | Camp, Smith, Upshur, Wood | 4 hr |
| Feb 20, 5:00 PM CST | Flash Flood Warning | SHV | Franklin, Red River, Titus | 4 hr |
| Feb 20, 5:00 PM CST | Flash Flood Warning | SHV | Cherokee | 4 hr |
| Feb 20, 5:05 PM CST | Tornado Warning | SHV | Cass | 40 min |
| Feb 20, 5:52 PM CST | Severe Thunderstorm Warning | SHV | Camp, Morris, Upshur | 38 min |
| Feb 20, 5:52 PM CST | Severe Thunderstorm Warning | SHV | Titus | 38 min |
| Feb 20, 6:04 PM CST | Flash Flood Warning | SHV | Cass, Harrison, Marion | 4 hr |
| Feb 20, 6:04 PM CST | Flash Flood Warning | SHV | Gregg, Rusk | 4 hr |
| Feb 20, 6:04 PM CST | Flash Flood Warning | SHV | Bowie | 4 hr |
| Feb 20, 6:15 PM CST | Severe Thunderstorm Warning | SHV | Cass, Harrison, Marion | 60 min |
| Feb 20, 6:27 PM CST | Flash Flood Warning | FWD | Lamar | 4 hr |
| Feb 20, 6:35 PM CST | Flash Flood Warning | HGX | Liberty, Polk | 115 min |
| Feb 20, 6:43 PM CST | Flash Flood Warning | SHV | Morris | 3 hr |
| Feb 20, 6:51 PM CST | Severe Thunderstorm Warning | SHV | Bowie | 54 min |
| Feb 20, 7:00 PM CST | Flash Flood Warning | FWD | Henderson, Van Zandt | 5 hr |
| Feb 20, 7:30 PM CST | Flash Flood Warning | SHV | Angelina, Nacogdoches | 3 hr |
| Feb 20, 7:56 PM CST | Flash Flood Warning | FWD | Hopkins, Rains | 5 hr |
| Feb 20, 7:56 PM CST | Flash Flood Warning | FWD | Delta | 5 hr |
| Feb 20, 7:58 PM CST | Flash Flood Warning | FWD | Hopkins, Rains | 5 hr |
| Feb 20, 7:58 PM CST | Flash Flood Warning | FWD | Delta | 5 hr |
| Feb 20, 7:59 PM CST | Tornado Warning | SHV | Shelby | 31 min |
| Feb 20, 8:48 PM CST | Flash Flood Warning | FWD | Lamar | 4 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 12:00Z, 9.5 hours before the alert went out and 128 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
- 271 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 501 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 164 m²/s²
- 0-3 km storm-relative helicity
- 209 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.2
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 19, 9:45 PM CST | Tornado Watch | SPC | Atascosa, Bandera, Bee, Bexar, Crockett, Dimmit and 18 more | 5 hr |
| Feb 20, 5:00 AM CST | Tornado Watch | SPC | Atascosa, Bastrop, Bell, Bexar, Blanco, Bosque and 56 more | 6 hr |
| Feb 20, 11:00 AM CST | Tornado Watch | SPC | Anderson, Bell, Bosque, Brazos, Burleson, Burnet and 34 more | 6 hr |
| Feb 20, 11:00 AM CST | Tornado Watch | SPC | Atascosa, Austin, Bastrop, Bee, Bexar, Blanco and 32 more | 6 hr |
Nearby
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.