Alert archive / Texas / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 498
The Storm Prediction Center issued this severe thunderstorm watch at Jun 18, 2004, 9:15 PM CDT for Beaver County, Cimarron County, Texas County, Oklahoma; 38 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 18, 2004, 9:15 PM CDT (02:15 UTC)
- Expired
- Jun 19, 2004, 3:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 41 counties
Beaver County, OK, Cimarron County, OK, Texas County, OK, Armstrong County, TX, Bailey County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Childress County, TX, Cochran County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dallam County, TX, Deaf Smith County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hansford County, TX, Hartley County, TX, Hemphill County, TX, Hockley County, TX, Hutchinson County, TX, King County, TX, Lamb County, TX, Lipscomb County, TX, Lubbock County, TX, Moore County, TX, Motley County, TX, Ochiltree County, TX, Oldham County, TX, Parmer County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Sherman County, TX, Swisher County, TX, Wheeler County, TX
The radar
The Amarillo radar (KAMA), 57 km from the middle of the area, began a volume at 02:31 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
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 9:19 PM CDT | Severe Thunderstorm Warning | AMA | Moore | 41 min |
| Jun 18, 9:24 PM CDT | Severe Thunderstorm Warning | AMA | Texas | 66 min |
| Jun 18, 9:34 PM CDT | Severe Thunderstorm Warning | LUB | Hockley | 41 min |
| Jun 18, 9:50 PM CDT | Severe Thunderstorm Warning | AMA | Hansford | 55 min |
| Jun 18, 9:57 PM CDT | Severe Thunderstorm Warning | AMA | Moore | 48 min |
| Jun 18, 10:41 PM CDT | Severe Thunderstorm Warning | AMA | Hansford | 94 min |
| Jun 18, 10:48 PM CDT | Severe Thunderstorm Warning | AMA | Moore | 57 min |
| Jun 18, 10:50 PM CDT | Flash Flood Warning | AMA | Hansford | 3 hr |
| Jun 18, 11:26 PM CDT | Flash Flood Warning | AMA | Moore | 4 hr |
| Jun 19, 12:15 AM CDT | Flash Flood Warning | AMA | Hutchinson | 4 hr |
| Jun 19, 1:43 AM CDT | Flash Flood Warning | AMA | Hansford | 3 hr |
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 00:00Z, 2.3 hours before the alert went out and 57 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
- 2456 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 1516 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 181 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 7.7
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 7:30 PM CDT | Mesoscale Discussion | SPC | Beaver, Cimarron, Texas | 90 min |
| Jun 18, 9:11 PM CDT | Mesoscale Discussion | SPC | Beaver, Cimarron, Texas | 34 min |
| Jun 18, 11:56 PM CDT | Mesoscale Discussion | SPC | Beaver, Cimarron, Texas | 94 min |
| Jun 19, 12:59 PM CDT | Mesoscale Discussion | SPC | LeFlore, McCurtain | 2 hr |
| Jun 19, 3:43 PM CDT | Mesoscale Discussion | SPC | Anderson, Cherokee, Gregg, Harrison, Henderson, Marion and 8 more | 2 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2004Severe Thunderstorm Watches in Oklahoma, 2004Every severe thunderstorm watch in 2004
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.