Alert archive / Oklahoma / Tornado Watches in 2008
Tornado Watch 336
The Storm Prediction Center issued this tornado watch at May 22, 2008, 2:28 PM CDT for 21 counties in Oklahoma; 20 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- May 22, 2008, 2:28 PM CDT (19:28 UTC)
- Expired
- May 22, 2008, 9:12 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 60 kt
All 41 counties
Alfalfa County, OK, Beaver County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Kiowa County, OK, Major County, OK, Roger Mills County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Archer County, TX, Baylor County, TX, Childress County, TX, Clay County, TX, Collingsworth County, TX, Cottle County, TX, Donley County, TX, Foard County, TX, Gray County, TX, Hall County, TX, Hardeman County, TX, Hemphill County, TX, King County, TX, Knox County, TX, Lipscomb County, TX, Ochiltree County, TX, Roberts County, TX, Wheeler County, TX, Wichita County, TX, Wilbarger County, TX
The radar
The Altus AFB radar (KFDR), 153 km from the middle of the area, began a volume at 19:31 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 50%
- One or more EF2 to EF5 tornadoes
- 30%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 70%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
23 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 3:53 PM CDT | Severe Thunderstorm Warning | LUB | Hall | 21 min |
| May 22, 3:59 PM CDT | Severe Thunderstorm Warning | AMA | Collingsworth, Donley, Gray, Wheeler | 61 min |
| May 22, 4:21 PM CDT | Severe Thunderstorm Warning | AMA | Hemphill, Lipscomb, Wheeler | 54 min |
| May 22, 4:58 PM CDT | Severe Thunderstorm Warning | AMA | Wheeler | 62 min |
| May 22, 5:13 PM CDT | Severe Thunderstorm Warning | AMA | Lipscomb | 32 min |
| May 22, 5:22 PM CDT | Severe Thunderstorm Warning | OUN | Beckham, Roger Mills | 38 min |
| May 22, 5:34 PM CDT | Severe Thunderstorm Warning | OUN | Ellis, Harper | 41 min |
| May 22, 5:46 PM CDT | Tornado Warning | AMA | Wheeler | 29 min |
| May 22, 5:52 PM CDT | Tornado Warning | OUN | Roger Mills | 23 min |
| May 22, 6:11 PM CDT | Severe Thunderstorm Warning | AMA | Hemphill, Wheeler | 34 min |
| May 22, 6:13 PM CDT | Severe Thunderstorm Warning | OUN | Ellis, Harper | 47 min |
| May 22, 6:13 PM CDT | Tornado Warning | OUN | Roger Mills | 47 min |
| May 22, 6:48 PM CDT | Severe Thunderstorm Warning | OUN | Custer, Dewey, Roger Mills | 42 min |
| May 22, 6:52 PM CDT | Tornado Warning | OUN | Custer, Roger Mills | 23 min |
| May 22, 6:55 PM CDT | Severe Thunderstorm Warning | OUN | Harper, Woods | 36 min |
| May 22, 7:12 PM CDT | Tornado Warning | OUN | Custer | 33 min |
| May 22, 7:28 PM CDT | Severe Thunderstorm Warning | OUN | Custer, Dewey | 47 min |
| May 22, 8:00 PM CDT | Severe Thunderstorm Warning | OUN | Ellis, Harper | 45 min |
| May 22, 8:13 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Dewey, Major | 62 min |
| May 22, 8:17 PM CDT | Severe Thunderstorm Warning | OUN | Custer | 28 min |
| May 22, 8:33 PM CDT | Severe Thunderstorm Warning | OUN | Custer | 27 min |
| May 22, 8:33 PM CDT | Severe Thunderstorm Warning | OUN | Ellis, Harper, Woodward | 42 min |
| May 22, 9:02 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Custer, Dewey, Garfield, Kingfisher, Major | 58 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
Fort Sill, OK (KFSI), launched 12:00Z, 7.5 hours before the alert went out and 162 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
- 761 J/kg
- Mixed-layer CIN
- -422 J/kg
- Mixed-layer LCL
- 1055 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 117 m²/s²
- 0-3 km storm-relative helicity
- 122 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 |
|---|---|---|---|---|
| May 21, 7:17 PM CDT | Mesoscale Discussion | SPC | Beaver, Cimarron, Texas | 118 min |
| May 22, 1:29 PM CDT | Mesoscale Discussion | SPC | Beaver, Beckham, Ellis, Greer, Harmon, Harper and 3 more | 61 min |
| May 22, 4:02 PM CDT | Mesoscale Discussion | SPC | Beaver, Beckham, Blaine, Caddo, Comanche, Cotton and 14 more | 58 min |
| May 22, 5:18 PM CDT | Mesoscale Discussion | SPC | Haskell, Latimer, LeFlore, McCurtain, Pushmataha, Sequoyah | 57 min |
| May 22, 6:46 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Beaver, Beckham, Blaine, Caddo, Comanche and 15 more | 59 min |
Nearby
Tornado Watches in Oklahoma, 2008Tornado Watches in Texas, 2008Every tornado watch in 2008
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.