Alert archive / Texas / Severe Thunderstorm Watches in 1997
Severe Thunderstorm Watch 161
The Storm Prediction Center issued this severe thunderstorm watch at Apr 20, 1997, 5:30 PM CDT for 24 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 20, 1997, 5:30 PM CDT (22:30 UTC)
- Expired
- Apr 20, 1997, 11:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 24 counties
Bandera County, TX, Blanco County, TX, Brown County, TX, Burnet County, TX, Concho County, TX, Coryell County, TX, Edwards County, TX, Gillespie County, TX, Hamilton County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Lampasas County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, McLennan County, TX, Medina County, TX, Menard County, TX, Mills County, TX, Real County, TX, San Saba County, TX, Sutton County, TX, Uvalde County, TX
The radar
The Laughlin AFB radar (KDFX), 132 km from the middle of the area, began a volume at 22:29 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
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 6:07 PM CDT | Severe Thunderstorm Warning | SJT | Concho | 48 min |
| Apr 20, 6:39 PM CDT | Severe Thunderstorm Warning | SJT | McCulloch | 61 min |
| Apr 20, 6:54 PM CDT | Severe Thunderstorm Warning | SJT | Mason | 46 min |
| Apr 20, 7:04 PM CDT | Severe Thunderstorm Warning | FWD | Mills | 41 min |
| Apr 20, 7:12 PM CDT | Severe Thunderstorm Warning | FWD | Lampasas | 63 min |
| Apr 20, 7:12 PM CDT | Severe Thunderstorm Warning | SJT | San Saba | 33 min |
| Apr 20, 7:32 PM CDT | Tornado Warning | FWD | Lampasas | 43 min |
| Apr 20, 7:50 PM CDT | Severe Thunderstorm Warning | SJT | San Saba | 45 min |
| Apr 20, 8:07 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Llano | 53 min |
| Apr 20, 8:20 PM CDT | Severe Thunderstorm Warning | FWD | Lampasas | 40 min |
| Apr 20, 8:57 PM CDT | Severe Thunderstorm Warning | EWX | Blanco, Comal, Hays, Kendall | 63 min |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 10.5 hours before the alert went out and 358 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
- 107 J/kg
- Mixed-layer CIN
- -425 J/kg
- Mixed-layer LCL
- 1341 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Apr 20, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | Bosque, Callahan, Clay, Coleman, Collin, Comanche and 25 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Texas, 1997Every severe thunderstorm watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.