Alert archive / Missouri / Tornado Watches in 2023
Tornado Watch 618
The Storm Prediction Center issued this tornado watch at Aug 9, 2023, 4:04 PM CDT for 7 counties in Arkansas; 17 counties in Missouri; 17 counties in Oklahoma. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 9, 2023, 4:04 PM CDT (21:04 UTC)
- Expired
- Aug 9, 2023, 10:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 55 kt
All 41 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, Christian County, MO, Dade County, MO, Dallas County, MO, Douglas County, MO, Greene County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Ozark County, MO, Polk County, MO, Stone County, MO, Taney County, MO, Webster County, MO, Wright County, MO, Adair County, OK, Cherokee County, OK, Craig 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, Ottawa County, OK, Pittsburg County, OK, Pushmataha County, OK, Rogers County, OK, Sequoyah County, OK, Wagoner County, OK
The radar
The Springfield radar (KSGF), 97 km from the middle of the area, began a volume at 21:04 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 40%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
19 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 4:55 PM CDT | Flash Flood Warning | SGF | Greene, Jasper, Lawrence, Newton | 5 hr |
| Aug 9, 5:39 PM CDT | Flash Flood Warning | SGF | Barry, Lawrence, Newton | 4 hr |
| Aug 9, 5:43 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Washington | 36 min |
| Aug 9, 6:00 PM CDT | Severe Thunderstorm Warning | SGF | Christian, Stone, Taney | 45 min |
| Aug 9, 6:07 PM CDT | Severe Thunderstorm Warning | SGF | Christian, Stone | 38 min |
| Aug 9, 6:19 PM CDT | Severe Thunderstorm Warning | SGF | Barry, Stone | 26 min |
| Aug 9, 6:31 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Rogers, Washington | 44 min |
| Aug 9, 6:37 PM CDT | Severe Thunderstorm Warning | SGF | Christian, Douglas, Ozark, Stone, Taney | 38 min |
| Aug 9, 6:55 PM CDT | Severe Thunderstorm Warning | TSA | Delaware, Ottawa | 37 min |
| Aug 9, 7:00 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Mayes, Rogers | 33 min |
| Aug 9, 7:09 PM CDT | Flash Flood Warning | SGF | Barry, Christian, Douglas, Stone, Taney | 3 hr |
| Aug 9, 7:11 PM CDT | Severe Thunderstorm Warning | SGF | Ozark, Taney | 49 min |
| Aug 9, 7:30 PM CDT | Severe Thunderstorm Warning | SGF | Barry, McDonald | 45 min |
| Aug 9, 7:44 PM CDT | Severe Thunderstorm Warning | TSA | Benton, Carroll | 46 min |
| Aug 9, 7:45 PM CDT | Flash Flood Warning | SGF | Ozark | 2 hr |
| Aug 9, 7:58 PM CDT | Severe Thunderstorm Warning | SGF | Howell, Ozark | 36 min |
| Aug 9, 8:12 PM CDT | Severe Thunderstorm Warning | SGF | Barry, Stone | 18 min |
| Aug 9, 8:14 PM CDT | Flash Flood Warning | TSA | Carroll, Madison | 3 hr |
| Aug 9, 8:27 PM CDT | Severe Thunderstorm Warning | TSA | Carroll | 33 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, 9.1 hours before the alert went out and 52 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
- 187 J/kg
- Mixed-layer CIN
- -232 J/kg
- Mixed-layer LCL
- 1559 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 184 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 |
|---|---|---|---|---|
| Aug 9, 11:22 AM CDT | Mesoscale Discussion | SPC | Conway, Crittenden, Cross, Faulkner, Lee, Lonoke and 8 more | 113 min |
| Aug 9, 2:12 PM CDT | Mesoscale Discussion | SPC | Arkansas, Grant, Jefferson, Lee, Lonoke, Monroe and 6 more | 2 hr |
| Aug 9, 3:21 PM CDT | Mesoscale Discussion | SPC | Benton, Boone, Carroll, Crawford, Madison, Marion and 2 more | 114 min |
| Aug 9, 6:10 PM CDT | Mesoscale Discussion | SPC | Benton, Boone, Carroll, Crawford, Franklin, Johnson and 5 more | 2 hr |
| Aug 9, 1:00 AM CDT | Mesoscale Discussion | SPC | Caddo, Canadian, Grady, Kiowa, Washita | 2 hr |
| Aug 9, 5:20 PM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Choctaw, Coal, Jefferson and 5 more | 115 min |
| Aug 9, 5:35 PM CDT | Severe Thunderstorm Watch | SPC | Atoka, Bryan, Carter, Coal, Jefferson, Johnston and 4 more | 4 hr |
Nearby
Tornado Watches in Missouri, 2023Tornado Watches in Oklahoma, 2023Tornado Watches in Arkansas, 2023Every tornado watch in 2023
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.