Alert archive / Oklahoma / Severe Thunderstorm Watches in 2009
Severe Thunderstorm Watch 751
The Storm Prediction Center issued this severe thunderstorm watch at Oct 1, 2009, 1:16 PM CDT for 7 counties in Arkansas; 20 counties in Missouri; 23 counties in Oklahoma. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 1, 2009, 1:16 PM CDT (18:16 UTC)
- Expired
- Oct 1, 2009, 7:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 50 counties
Benton County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Madison County, AR, Sebastian County, AR, Washington County, AR, Barry County, MO, Barton County, MO, Camden County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Greene County, MO, Hickory County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Polk County, MO, Pulaski County, MO, Stone County, MO, Taney County, MO, Vernon County, MO, Webster County, MO, Adair County, OK, Atoka County, OK, Bryan County, OK, Cherokee County, OK, Choctaw County, OK, Coal County, OK, Craig County, OK, Delaware County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Marshall County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Okmulgee County, OK, Ottawa County, OK, Pittsburg County, OK, Pushmataha County, OK, Sequoyah County, OK, Wagoner County, OK
The radar
The Tulsa radar (KINX), 107 km from the middle of the area, began a volume at 18:18 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
- 50%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
24 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 1, 2:03 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Okfuskee, Okmulgee | 57 min |
| Oct 1, 2:20 PM CDT | Severe Thunderstorm Warning | TSA | Muskogee, Wagoner | 40 min |
| Oct 1, 2:23 PM CDT | Severe Thunderstorm Warning | OUN | Hughes | 31 min |
| Oct 1, 2:28 PM CDT | Severe Thunderstorm Warning | OUN | Coal, Hughes, Pontotoc, Seminole | 77 min |
| Oct 1, 2:35 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Pittsburg | 55 min |
| Oct 1, 2:37 PM CDT | Severe Thunderstorm Warning | TSA | Ottawa | 23 min |
| Oct 1, 2:40 PM CDT | Severe Thunderstorm Warning | SGF | Jasper, Newton | 55 min |
| Oct 1, 2:56 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Pittsburg | 34 min |
| Oct 1, 3:16 PM CDT | Severe Thunderstorm Warning | SGF | Benton, Hickory, St. Clair | 59 min |
| Oct 1, 3:19 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 56 min |
| Oct 1, 3:30 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, Latimer, McIntosh, Muskogee, Pittsburg | 60 min |
| Oct 1, 3:31 PM CDT | Severe Thunderstorm Warning | OUN | Atoka, Coal, Johnston | 59 min |
| Oct 1, 4:06 PM CDT | Severe Thunderstorm Warning | SGF | Christian, Greene, Lawrence | 21 min |
| Oct 1, 4:06 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, Latimer, LeFlore | 54 min |
| Oct 1, 4:10 PM CDT | Severe Thunderstorm Warning | OUN | Atoka | 65 min |
| Oct 1, 4:33 PM CDT | Severe Thunderstorm Warning | SGF | Barry, Stone | 57 min |
| Oct 1, 4:40 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, Pittsburg, Pushmataha | 65 min |
| Oct 1, 4:41 PM CDT | Severe Thunderstorm Warning | OUN | Bryan | 64 min |
| Oct 1, 4:44 PM CDT | Severe Thunderstorm Warning | TSA | Choctaw, Pushmataha | 61 min |
| Oct 1, 5:05 PM CDT | Severe Thunderstorm Warning | SGF | Barry, Stone, Taney | 55 min |
| Oct 1, 5:25 PM CDT | Severe Thunderstorm Warning | TSA | Sebastian | 65 min |
| Oct 1, 5:38 PM CDT | Severe Thunderstorm Warning | TSA | Choctaw, Pushmataha | 42 min |
| Oct 1, 5:48 PM CDT | Severe Thunderstorm Warning | TSA | Carroll | 27 min |
| Oct 1, 5:52 PM CDT | Severe Thunderstorm Warning | SGF | Stone, Taney | 53 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
Springfield, MO (KSGF), launched 12:00Z, 6.3 hours before the alert went out and 78 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
- 736 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 521 m²/s²
- 0-3 km storm-relative helicity
- 528 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 |
|---|---|---|---|---|
| Oct 1, 12:44 PM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more | 91 min |
| Oct 1, 5:12 PM CDT | Mesoscale Discussion | SPC | Baxter, Boone, Carroll, Cleburne, Conway, Crawford and 21 more | 93 min |
| Oct 1, 6:02 PM CDT | Mesoscale Discussion | SPC | Sevier | 58 min |
| Oct 1, 6:29 PM CDT | Severe Thunderstorm Watch | SPC | Bradley, Calhoun, Clark, Cleveland, Columbia, Dallas and 21 more | 8 hr |
| Sep 30, 11:44 PM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Buchanan, Caldwell, Carroll, Cass and 17 more | 91 min |
| Sep 30, 7:31 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Blaine, Custer, Dewey, Ellis, Harper and 5 more | 89 min |
| Oct 1, 3:50 PM CDT | Severe Thunderstorm Watch | SPC | McCurtain | 7 hr |
Nearby
Severe Thunderstorm Watches in Oklahoma, 2009Severe Thunderstorm Watches in Missouri, 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.