Alert archive / Kansas / Mesoscale Discussions in 2026
Mesoscale Discussion 1221
The Storm Prediction Center issued this mesoscale discussion at Jun 20, 2026, 11:24 PM CDT for 39 counties in Kansas; Harper County, Woods County, Oklahoma. It was in force for 96 min.
The area
The outline as issued.
The facts
- Issued
- Jun 20, 2026, 11:24 PM CDT (04:24 UTC)
- Expired
- Jun 21, 2026, 1:00 AM CDT
- In force
- 96 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 359...361
All 41 counties
Barber County, KS, Barton County, KS, Chase County, KS, Clark County, KS, Clay County, KS, Cloud County, KS, Comanche County, KS, Dickinson County, KS, Edwards County, KS, Ellsworth County, KS, Ford County, KS, Geary County, KS, Gray County, KS, Harper County, KS, Harvey County, KS, Hodgeman County, KS, Kingman County, KS, Kiowa County, KS, Lincoln County, KS, Marion County, KS, Marshall County, KS, McPherson County, KS, Meade County, KS, Morris County, KS, Ottawa County, KS, Pawnee County, KS, Pottawatomie County, KS, Pratt County, KS, Reno County, KS, Rice County, KS, Riley County, KS, Rush County, KS, Russell County, KS, Saline County, KS, Sedgwick County, KS, Stafford County, KS, Sumner County, KS, Wabaunsee County, KS, Washington County, KS, Harper County, OK, Woods County, OK
The radar
The Wichita radar (KICT), 93 km from the middle of the area, began a volume at 04:27 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
Dodge City, (KDDC), launched 00:00Z, 4.4 hours before the alert went out and 147 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
- 1502 J/kg
- Mixed-layer CIN
- -177 J/kg
- Mixed-layer LCL
- 1559 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 335 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 5.5
The text
As transmitted.
906
ACUS11 KWNS 210425
SWOMCD
SPC MCD 210424
KSZ000-NEZ000-OKZ000-210600-
Mesoscale Discussion 1221
NWS Storm Prediction Center Norman OK
1124 PM CDT Sat Jun 20 2026
Areas affected...portions of western into central Kansas
Concerning...Severe Thunderstorm Watch 359...361...
Valid 210424Z - 210600Z
The severe weather threat for Severe Thunderstorm Watch 359, 361
continues.
SUMMARY...Severe gusts will remain a concern with the ongoing MCS
for at least the next few hours.
DISCUSSION...A mature cold-pool-driven MCS continues to propagate
southeastward across western into central KS, with several recent
measured severe gusts noted. Recent KICT inbound velocity data shows
that a pronounced rear-inflow jet persists with this MCS, as well as
a book-end/line-end mesovortex on its northern flank. Furthermore,
this MCS will continue to progress southeastward amid a highly
sheared and buoyant airmass, characterized by 50 kts of effective
bulk shear (oriented roughly normal to the MCS leading line) and
2000+ J/kg MLCAPE, driven by 8+ C/km mid-level lapse rates. Given
the highly organized storm structure and favorable ambient
supporting environment, severe gusts will likely continue with this
MCS for at least a few more hours.
..Squitieri.. 06/21/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...OAX...TOP...ICT...OUN...GID...DDC...AMA...
LAT...LON 38120065 38409974 39679754 40019690 39989644 39489610
38679621 37789685 37189738 36779817 36539919 36579987
36840045 38120065
MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 INSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 7:08 PM CDT | Mesoscale Discussion | SPC | Gove, Lane, Logan, Scott, Wichita | 37 min |
| Jun 20, 7:22 PM CDT | Severe Thunderstorm Watch | SPC | Barton, Chase, Clay, Cloud, Dickinson, Edwards and 26 more | 8 hr |
| Jun 20, 8:29 PM CDT | Mesoscale Discussion | SPC | Barton, Edwards, Ellis, Ellsworth, Finney, Ford and 17 more | 91 min |
| Jun 20, 9:42 PM CDT | Mesoscale Discussion | SPC | Barber, Barton, Butler, Clark, Comanche, Cowley and 33 more | 63 min |
| Jun 20, 9:59 PM CDT | Severe Thunderstorm Watch | SPC | Barber, Clark, Comanche, Finney, Ford, Grant and 14 more | 6 hr |
| Jun 20, 11:47 PM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Atchison, Bourbon, Chautauqua, Coffey and 21 more | 58 min |
| Jun 21, 12:02 AM CDT | Severe Thunderstorm Watch | SPC | Allen, Anderson, Atchison, Bourbon, Butler, Chautauqua and 23 more | 6 hr |
| Jun 21, 2:36 AM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Bourbon, Butler, Chase, Chautauqua and 24 more | 114 min |
| Jun 21, 5:27 AM CDT | Mesoscale Discussion | SPC | Allen, Bourbon, Butler, Chautauqua, Cherokee, Cowley and 10 more | 63 min |
| Jun 21, 12:51 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Rawlins, Sherman, Thomas | 114 min |
| Jun 21, 1:46 PM CDT | Severe Thunderstorm Watch | SPC | Cheyenne, Decatur, Gove, Graham, Greeley, Logan and 7 more | 7 hr |
| Jun 21, 3:01 PM CDT | Mesoscale Discussion | SPC | Barber, Chautauqua, Cherokee, Comanche, Cowley, Crawford and 8 more | 119 min |
| Jun 21, 3:33 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Decatur, Rawlins, Sherman, Thomas, Wallace | 117 min |
| Jun 21, 5:19 PM CDT | Mesoscale Discussion | SPC | Barton, Edwards, Ellis, Finney, Ford, Graham and 18 more | 56 min |
| Jun 21, 5:21 PM CDT | Mesoscale Discussion | SPC | Allen, Bourbon, Chautauqua, Cherokee, Crawford, Elk and 4 more | 84 min |
| Jun 21, 5:40 PM CDT | Severe Thunderstorm Watch | SPC | Chautauqua, Cherokee, Crawford, Elk, Labette, Montgomery and 2 more | 7 hr |
| Jun 21, 6:07 PM CDT | Severe Thunderstorm Watch | SPC | Barber, Barton, Clark, Comanche, Cowley, Edwards and 27 more | 7 hr |
| Jun 21, 6:12 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Blaine, Custer, Dewey, Ellis, Garfield and 6 more | 2 hr |
Nearby
Mesoscale Discussions in Kansas, 2026Mesoscale Discussions in Oklahoma, 2026Every mesoscale discussion in 2026
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.