Alert archive / Oklahoma / Severe Thunderstorm Watches in 2007
Severe Thunderstorm Watch 396
The Storm Prediction Center issued this severe thunderstorm watch at Jun 13, 2007, 9:46 PM CDT for 26 counties in Oklahoma. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 13, 2007, 9:46 PM CDT (02:46 UTC)
- Expired
- Jun 14, 2007, 3:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 26 counties
Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Comanche County, OK, Custer County, OK, Garfield County, OK, Grady County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, McClain County, OK, Noble County, OK, Oklahoma County, OK, Payne County, OK, Pottawatomie County, OK, Tillman County, OK, Washita County, OK
The radar
The Vance AFB radar (KVNX), 131 km from the middle of the area, began a volume at 02:49 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
- 20%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 80%
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 13, 9:53 PM CDT | Severe Thunderstorm Warning | OUN | Caddo | 67 min |
| Jun 13, 10:10 PM CDT | Severe Thunderstorm Warning | OUN | Blaine | 50 min |
| Jun 13, 10:29 PM CDT | Severe Thunderstorm Warning | OUN | Custer | 46 min |
| Jun 13, 10:33 PM CDT | Severe Thunderstorm Warning | OUN | Kiowa, Washita | 42 min |
| Jun 13, 10:57 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Caddo | 63 min |
| Jun 13, 11:15 PM CDT | Severe Thunderstorm Warning | OUN | Kiowa, Washita | 45 min |
| Jun 14, 12:02 AM CDT | Severe Thunderstorm Warning | OUN | Caddo | 43 min |
| Jun 14, 12:04 AM CDT | Severe Thunderstorm Warning | OUN | Jackson, Kiowa | 41 min |
| Jun 14, 12:23 AM CDT | Severe Thunderstorm Warning | OUN | Washita | 52 min |
| Jun 14, 12:45 AM CDT | Severe Thunderstorm Warning | OUN | Kiowa | 45 min |
| Jun 14, 1:46 AM CDT | Severe Thunderstorm Warning | OUN | Comanche, Cotton | 44 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 00:00Z, 2.8 hours before the alert went out and 133 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
- 2452 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 895 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 4.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 7:34 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Beckham, Blaine, Caddo, Canadian, Cleveland and 21 more | 116 min |
| Jun 14, 1:20 PM CDT | Mesoscale Discussion | SPC | Beckham, Caddo, Carter, Comanche, Cotton, Grady and 10 more | 115 min |
| Jun 14, 2:33 PM CDT | Mesoscale Discussion | SPC | Beaver | 117 min |
Nearby
Severe Thunderstorm Watches in Oklahoma, 2007Every severe thunderstorm watch in 2007
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.