Alert archive / Oklahoma / Severe Thunderstorm Watches in 2009
Severe Thunderstorm Watch 366
The Storm Prediction Center issued this severe thunderstorm watch at Jun 10, 2009, 3:46 PM CDT for 7 counties in Arkansas; 25 counties in Oklahoma. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 10, 2009, 3:46 PM CDT (20:46 UTC)
- Expired
- Jun 10, 2009, 10:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 32 counties
Benton County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Madison County, AR, Sebastian County, AR, Washington County, AR, Adair County, OK, Cherokee County, OK, Choctaw County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Nowata County, OK, Okfuskee County, OK, Okmulgee County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Pittsburg County, OK, Pushmataha County, OK, Rogers County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 47 km from the middle of the area, began a volume at 20:46 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
- 30%
- 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
- 70%
Warnings issued inside it
13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 3:54 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 44 min |
| Jun 10, 4:14 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Okfuskee, Okmulgee | 38 min |
| Jun 10, 4:17 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Nowata, Rogers, Washington | 47 min |
| Jun 10, 5:04 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Pittsburg | 71 min |
| Jun 10, 5:23 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Muskogee, Okmulgee, Pittsburg | 67 min |
| Jun 10, 5:49 PM CDT | Severe Thunderstorm Warning | TSA | Cherokee, Haskell, Latimer, LeFlore, McIntosh, Muskogee and 3 more | 56 min |
| Jun 10, 6:32 PM CDT | Tornado Warning | TSA | Haskell, Sequoyah | 28 min |
| Jun 10, 6:39 PM CDT | Severe Thunderstorm Warning | TSA | Crawford, Sebastian, Washington | 66 min |
| Jun 10, 6:47 PM CDT | Tornado Warning | TSA | Adair, Sequoyah | 28 min |
| Jun 10, 7:10 PM CDT | Tornado Warning | TSA | Crawford, Washington | 36 min |
| Jun 10, 7:14 PM CDT | Severe Thunderstorm Warning | TSA | Crawford, Franklin, Madison, Sebastian, Washington | 76 min |
| Jun 10, 8:10 PM CDT | Severe Thunderstorm Warning | TSA | Carroll, Madison | 49 min |
| Jun 10, 8:57 PM CDT | Severe Thunderstorm Warning | TSA | Choctaw, Pushmataha | 78 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
Lamont, OK (KLMN), launched 12:00Z, 8.8 hours before the alert went out and 137 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2256 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 132 m²/s²
- 0-3 km storm-relative helicity
- 95 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 |
|---|---|---|---|---|
| Jun 9, 7:56 PM CDT | Severe Thunderstorm Watch | SPC | Clay, Craighead, Greene, Lawrence, Mississippi, Randolph | 3 hr |
| Jun 9, 9:15 PM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Cleburne, Fulton and 8 more | 60 min |
| Jun 9, 9:46 PM CDT | Severe Thunderstorm Watch | SPC | Baxter, Benton, Boone, Carroll, Conway, Fulton and 11 more | 7 hr |
| Jun 9, 11:30 PM CDT | Mesoscale Discussion | SPC | Benton, Boone, Carroll, Madison, Marion, Newton and 2 more | 60 min |
| Jun 10, 1:12 AM CDT | Mesoscale Discussion | SPC | Craighead, Crittenden, Cross, Faulkner, Greene, Independence and 13 more | 33 min |
| Jun 10, 1:29 AM CDT | Severe Thunderstorm Watch | SPC | Arkansas, Cleburne, Crittenden, Cross, Faulkner, Independence and 12 more | 3 hr |
| Jun 10, 2:26 AM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Cleburne, Conway and 12 more | 64 min |
| Jun 10, 3:33 AM CDT | Mesoscale Discussion | SPC | Fulton | 27 min |
| Jun 10, 4:41 AM CDT | Mesoscale Discussion | SPC | Crittenden, Cross, Lee, Phillips, Poinsett, St. Francis | 34 min |
| Jun 10, 5:20 AM CDT | Mesoscale Discussion | SPC | Clay, Fulton, Greene, Randolph | 55 min |
| Jun 10, 6:17 PM CDT | Mesoscale Discussion | SPC | Baxter, Bradley, Calhoun, Clark, Cleburne, Cleveland and 44 more | 58 min |
| Jun 10, 6:37 PM CDT | Severe Thunderstorm Watch | SPC | Arkansas, Baxter, Boone, Bradley, Calhoun, Clark and 48 more | 8 hr |
| Jun 10, 12:30 PM CDT | Mesoscale Discussion | SPC | Barton, Benton, Camden, Cedar, Cole, Crawford and 20 more | 90 min |
| Jun 10, 4:51 PM CDT | Mesoscale Discussion | SPC | Barry, Barton, Bates, Benton, Callaway, Camden and 35 more | 84 min |
| Jun 10, 5:15 PM CDT | Tornado Watch | SPC | Audrain, Barry, Barton, Bates, Benton, Boone and 55 more | 7 hr |
| Jun 10, 10:44 AM CDT | Mesoscale Discussion | SPC | Beckham, Blaine, Caddo, Canadian, Comanche, Cotton and 11 more | 91 min |
| Jun 10, 11:09 AM CDT | Severe Thunderstorm Watch | SPC | Alfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 20 more | 7 hr |
| Jun 10, 1:35 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 15 more | 85 min |
| Jun 10, 2:13 PM CDT | Severe Thunderstorm Watch | SPC | Atoka, Bryan, Carter, Cleveland, Coal, Garvin and 10 more | 10 hr |
| Jun 10, 5:38 PM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Choctaw, Coal, Jefferson and 5 more | 67 min |
Nearby
Severe Thunderstorm Watches in Oklahoma, 2009Severe Thunderstorm Watches in Arkansas, 2009Every severe thunderstorm watch in 2009
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.