Alert archive / Texas / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 926
The Storm Prediction Center issued this severe thunderstorm watch at Sep 20, 2003, 5:25 PM CDT for Beaver County, Texas County, Oklahoma; 14 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 20, 2003, 5:25 PM CDT (22:25 UTC)
- Expired
- Sep 21, 2003, 12:00 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
Counties Beaver County, OK, Texas County, OK, Carson County, TX, Dallam County, TX, Gray County, TX, Hansford County, TX, Hartley County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Moore County, TX, Ochiltree County, TX, Oldham County, TX, Potter County, TX, Roberts County, TX, Sherman County, TX
The radar
The Amarillo radar (KAMA), 107 km from the middle of the area, began a volume at 22:27 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
4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 6:05 PM CDT | Severe Thunderstorm Warning | AMA | Texas | 55 min |
| Sep 20, 6:59 PM CDT | Severe Thunderstorm Warning | AMA | Beaver, Texas | 61 min |
| Sep 20, 8:00 PM CDT | Severe Thunderstorm Warning | AMA | Beaver, Texas | 60 min |
| Sep 20, 8:36 PM CDT | Severe Thunderstorm Warning | AMA | Hutchinson, Moore | 54 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 12:00Z, 10.4 hours before the alert went out and 107 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
- 1193 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 6:34 PM CDT | Mesoscale Discussion | SPC | Beaver, Texas | 86 min |
| Sep 20, 2:34 PM CDT | Mesoscale Discussion | SPC | Armstrong, Carson, Castro, Deaf Smith, Donley, Gray and 10 more | 116 min |
Nearby
Severe Thunderstorm Watches in Texas, 2003Severe Thunderstorm Watches in Oklahoma, 2003Every severe thunderstorm watch in 2003
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.