Alert archive / Missouri / Severe Thunderstorm Watches in 2019
Severe Thunderstorm Watch 596
The Storm Prediction Center issued this severe thunderstorm watch at Aug 18, 2019, 2:42 AM CDT for 4 states. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 18, 2019, 2:42 AM CDT (07:42 UTC)
- Expired
- Aug 18, 2019, 6:44 AM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 40 counties
Benton County, AR, Carroll County, AR, Madison County, AR, Washington County, AR, Bourbon County, KS, Cherokee County, KS, Crawford County, KS, Linn County, KS, Barry County, MO, Barton County, MO, Bates 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, St. Clair County, MO, Stone County, MO, Vernon County, MO, Webster County, MO, Adair County, OK, Cherokee County, OK, Craig County, OK, Delaware County, OK, Mayes County, OK, Nowata County, OK, Osage County, OK, Ottawa County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 104 km from the middle of the area, began a volume at 07:45 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
- 10%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 4:12 AM CDT | Severe Thunderstorm Warning | TSA | Craig, Nowata | 48 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 00:00Z, 7.7 hours before the alert went out and 91 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
- 2279 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 1439 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 125 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 6.6
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 6:09 AM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Madison, Washington | 66 min |
| Aug 18, 12:29 PM CDT | Mesoscale Discussion | SPC | Baxter, Boone, Carroll, Cleburne, Conway, Crawford and 29 more | 2 hr |
| Aug 17, 8:25 PM CDT | Severe Thunderstorm Watch | SPC | Allen, Anderson, Barton, Butler, Chase, Chautauqua and 38 more | 7 hr |
| Aug 17, 9:10 PM CDT | Mesoscale Discussion | SPC | Gove, Graham, Logan, Sheridan, Sherman, Thomas and 1 more | 2 hr |
| Aug 17, 11:06 PM CDT | Mesoscale Discussion | SPC | Allen, Barton, Butler, Chase, Chautauqua, Cowley and 22 more | 84 min |
| Aug 18, 1:42 AM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Bourbon, Chautauqua, Cherokee, Coffey and 10 more | 93 min |
| Aug 18, 2:45 AM CDT | Mesoscale Discussion | SPC | Atchison, Doniphan, Douglas, Jefferson, Johnson, Leavenworth and 1 more | 2 hr |
| Aug 18, 12:35 PM CDT | Mesoscale Discussion | SPC | Bollinger, Cape Girardeau, Carter, Dent, Iron, Madison and 7 more | 115 min |
| Aug 18, 1:05 PM CDT | Severe Thunderstorm Watch | SPC | Bollinger, Cape Girardeau, Carter, Iron, Jefferson, Madison and 6 more | 8 hr |
| Aug 18, 3:29 PM CDT | Mesoscale Discussion | SPC | Bollinger, Butler, Cape Girardeau, Carter, Iron, Madison and 6 more | 91 min |
| Aug 17, 7:15 PM CDT | Mesoscale Discussion | SPC | Beckham, Blaine, Caddo, Canadian, Comanche, Cotton and 14 more | 3 hr |
| Aug 18, 6:20 PM CDT | Mesoscale Discussion | SPC | Greer, Harmon, Jackson, Kiowa, Tillman | 2 hr |
Nearby
Severe Thunderstorm Watches in Missouri, 2019Severe Thunderstorm Watches in Oklahoma, 2019Severe Thunderstorm Watches in Arkansas, 2019Every severe thunderstorm watch in 2019
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.