Alert archive / Kansas / Mesoscale Discussions in 2020
Mesoscale Discussion 807
The Storm Prediction Center issued this mesoscale discussion at Jun 4, 2020, 12:54 AM CDT for 38 counties in Kansas; 22 counties in Missouri. It was in force for 96 min.
The area
The outline as issued.
The facts
- Issued
- Jun 4, 2020, 12:54 AM CDT (05:54 UTC)
- Expired
- Jun 4, 2020, 2:30 AM CDT
- In force
- 96 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 247
All 60 counties
Allen County, KS, Anderson County, KS, Atchison County, KS, Bourbon County, KS, Brown County, KS, Butler County, KS, Chase County, KS, Cherokee County, KS, Coffey County, KS, Crawford County, KS, Dickinson County, KS, Doniphan County, KS, Douglas County, KS, Elk County, KS, Franklin County, KS, Geary County, KS, Greenwood County, KS, Harvey County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Labette County, KS, Leavenworth County, KS, Linn County, KS, Lyon County, KS, Marion County, KS, McPherson County, KS, Miami County, KS, Morris County, KS, Neosho County, KS, Osage County, KS, Pottawatomie County, KS, Riley County, KS, Shawnee County, KS, Wabaunsee County, KS, Wilson County, KS, Woodson County, KS, Wyandotte County, KS, Andrew County, MO, Barton County, MO, Bates County, MO, Buchanan County, MO, Caldwell County, MO, Cass County, MO, Cedar County, MO, Clay County, MO, Clinton County, MO, Dade County, MO, Daviess County, MO, DeKalb County, MO, Henry County, MO, Jackson County, MO, Jasper County, MO, Johnson County, MO, Lafayette County, MO, Lawrence County, MO, Platte County, MO, Ray County, MO, St. Clair County, MO, Vernon County, MO
The radar
The Topeka radar (KTWX), 48 km from the middle of the area, began a volume at 05:58 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.
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 5.9 hours before the alert went out and 28 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
- 2970 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 1684 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 106 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 4.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 3, 8:54 PM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Clay, Cloud, Doniphan, Jackson and 12 more | 2 hr |
| Jun 3, 9:38 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Atchison, Brown, Clay, Cloud, Coffey and 22 more | 6 hr |
| Jun 3, 10:44 PM CDT | Mesoscale Discussion | SPC | Anderson, Atchison, Brown, Clay, Cloud, Dickinson and 25 more | 2 hr |
| Jun 4, 2:07 AM CDT | Severe Thunderstorm Watch | SPC | Allen, Bourbon, Cherokee, Crawford, Labette, Linn and 4 more | 5 hr |
| Jun 4, 3:32 AM CDT | Mesoscale Discussion | SPC | Allen, Bourbon, Cherokee, Crawford, Linn, Neosho and 2 more | 88 min |
| Jun 4, 5:23 PM CDT | Mesoscale Discussion | SPC | Decatur, Rawlins, Sheridan, Thomas | 2 hr |
| Jun 4, 5:44 AM CDT | Mesoscale Discussion | SPC | Barry, Christian, Stone, Taney | 61 min |
| Jun 4, 2:42 PM CDT | Mesoscale Discussion | SPC | Mississippi, Scott | 2 hr |
Nearby
Mesoscale Discussions in Kansas, 2020Mesoscale Discussions in Missouri, 2020Every mesoscale discussion in 2020
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.