Alert archive / Oklahoma / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 794
The Storm Prediction Center issued this severe thunderstorm watch at Aug 27, 2004, 5:20 PM CDT for 6 counties in Kansas; 15 counties in Oklahoma. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 27, 2004, 5:20 PM CDT (22:20 UTC)
- Expired
- Aug 27, 2004, 11:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 21 counties
Butler County, KS, Chautauqua County, KS, Cowley County, KS, Elk County, KS, Sumner County, KS, Wilson County, KS, Blaine County, OK, Caddo County, OK, Canadian County, OK, Comanche County, OK, Custer County, OK, Garfield County, OK, Grant County, OK, Greer County, OK, Jackson County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Logan County, OK, Noble County, OK, Washita County, OK
The radar
The Norman radar (KTLX), 100 km from the middle of the area, began a volume at 22:21 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
19 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 5:59 PM CDT | Severe Thunderstorm Warning | OUN | Garfield, Major | 31 min |
| Aug 27, 6:04 PM CDT | Severe Thunderstorm Warning | ICT | Butler | 56 min |
| Aug 27, 6:10 PM CDT | Severe Thunderstorm Warning | ICT | Cowley, Sumner | 65 min |
| Aug 27, 6:31 PM CDT | Severe Thunderstorm Warning | OUN | Garfield, Major | 29 min |
| Aug 27, 6:39 PM CDT | Severe Thunderstorm Warning | OUN | Blaine | 36 min |
| Aug 27, 6:49 PM CDT | Severe Thunderstorm Warning | ICT | Butler | 56 min |
| Aug 27, 6:59 PM CDT | Tornado Warning | ICT | Cowley | 61 min |
| Aug 27, 7:01 PM CDT | Severe Thunderstorm Warning | OUN | Garfield, Major | 44 min |
| Aug 27, 7:12 PM CDT | Severe Thunderstorm Warning | ICT | Sumner | 63 min |
| Aug 27, 7:13 PM CDT | Severe Thunderstorm Warning | OUN | Blaine | 32 min |
| Aug 27, 7:19 PM CDT | Tornado Warning | ICT | Sumner | 56 min |
| Aug 27, 7:22 PM CDT | Flash Flood Warning | OUN | Garfield | 2 hr |
| Aug 27, 7:47 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Garfield, Kingfisher, Major | 43 min |
| Aug 27, 7:58 PM CDT | Severe Thunderstorm Warning | ICT | Cowley | 62 min |
| Aug 27, 8:02 PM CDT | Flash Flood Warning | ICT | Sumner | 6 hr |
| Aug 27, 8:12 PM CDT | Flash Flood Warning | ICT | Cowley | 6 hr |
| Aug 27, 8:14 PM CDT | Tornado Warning | ICT | Sumner | 61 min |
| Aug 27, 8:49 PM CDT | Severe Thunderstorm Warning | ICT | Cowley | 56 min |
| Aug 27, 10:18 PM CDT | Severe Thunderstorm Warning | ICT | Butler | 57 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
Norman, OK (KOUN), launched 12:00Z, 10.3 hours before the alert went out and 99 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
- 933 J/kg
- Mixed-layer CIN
- -264 J/kg
- Mixed-layer LCL
- 1399 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 183 m²/s²
- 0-3 km storm-relative helicity
- 242 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 1:07 PM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Atchison, Bourbon, Butler, Chase and 24 more | 113 min |
| Aug 27, 2:45 PM CDT | Severe Thunderstorm Watch | SPC | Atchison, Coffey, Doniphan, Douglas, Franklin, Jackson and 10 more | 6 hr |
| Aug 27, 3:49 PM CDT | Mesoscale Discussion | SPC | Atchison, Coffey, Doniphan, Douglas, Franklin, Jackson and 10 more | 86 min |
| Aug 27, 4:54 PM CDT | Mesoscale Discussion | SPC | Butler, Cowley, Sumner | 96 min |
Nearby
Severe Thunderstorm Watches in Oklahoma, 2004Severe Thunderstorm Watches in Kansas, 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.