Alert archive / Oklahoma / Severe Thunderstorm Watches in 2006
Severe Thunderstorm Watch 421
The Storm Prediction Center issued this severe thunderstorm watch at May 29, 2006, 3:49 PM CDT for 12 counties in Kansas; 17 counties in Oklahoma. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- May 29, 2006, 3:49 PM CDT (20:49 UTC)
- Expired
- May 29, 2006, 11:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
All 29 counties
Barton County, KS, Ellsworth County, KS, Harper County, KS, Harvey County, KS, Kingman County, KS, Marion County, KS, McPherson County, KS, Reno County, KS, Rice County, KS, Saline County, KS, Sedgwick County, KS, Sumner County, KS, Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Kiowa County, OK, Major County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK, Woodward County, OK
The radar
The Vance AFB radar (KVNX), 102 km from the middle of the area, began a volume at 20:50 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
18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 3:52 PM CDT | Severe Thunderstorm Warning | OUN | Woodward | 38 min |
| May 29, 3:59 PM CDT | Severe Thunderstorm Warning | OUN | Woods | 46 min |
| May 29, 4:29 PM CDT | Severe Thunderstorm Warning | OUN | Woodward | 46 min |
| May 29, 4:40 PM CDT | Severe Thunderstorm Warning | OUN | Woods | 50 min |
| May 29, 5:25 PM CDT | Severe Thunderstorm Warning | OUN | Harper, Woodward | 50 min |
| May 29, 5:29 PM CDT | Severe Thunderstorm Warning | OUN | Woods | 61 min |
| May 29, 5:53 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa | 67 min |
| May 29, 6:24 PM CDT | Severe Thunderstorm Warning | OUN | Harper | 36 min |
| May 29, 6:37 PM CDT | Severe Thunderstorm Warning | OUN | Woods | 53 min |
| May 29, 7:01 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa | 59 min |
| May 29, 7:21 PM CDT | Severe Thunderstorm Warning | OUN | Grant | 54 min |
| May 29, 7:31 PM CDT | Severe Thunderstorm Warning | OUN | Woods | 44 min |
| May 29, 8:15 PM CDT | Severe Thunderstorm Warning | OUN | Major, Woods | 60 min |
| May 29, 9:19 PM CDT | Severe Thunderstorm Warning | ICT | Barton | 56 min |
| May 29, 9:24 PM CDT | Severe Thunderstorm Warning | ICT | Rice | 36 min |
| May 29, 9:29 PM CDT | Severe Thunderstorm Warning | ICT | Kingman, Reno, Sedgwick, Sumner | 48 min |
| May 29, 10:14 PM CDT | Severe Thunderstorm Warning | ICT | Barton, Ellsworth, Rice | 22 min |
| May 29, 10:23 PM CDT | Severe Thunderstorm Warning | ICT | Sedgwick | 22 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, 8.8 hours before the alert went out and 186 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
- 701 J/kg
- Mixed-layer CIN
- -368 J/kg
- Mixed-layer LCL
- 1156 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 7:17 PM CDT | Mesoscale Discussion | SPC | Barber, Clark, Comanche, Edwards, Ford, Hodgeman and 5 more | 58 min |
| May 29, 10:37 AM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Atchison, Brown, Coffey, Doniphan and 12 more | 83 min |
| May 29, 3:32 PM CDT | Mesoscale Discussion | SPC | Barber, Comanche, Harper, Harvey, Kingman, McPherson and 4 more | 118 min |
Nearby
Severe Thunderstorm Watches in Oklahoma, 2006Severe Thunderstorm Watches in Kansas, 2006Every severe thunderstorm watch in 2006
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.