Alert archive / Kansas / Mesoscale Discussions in 2021
Mesoscale Discussion 1083
The Storm Prediction Center issued this mesoscale discussion at Jun 24, 2021, 5:31 PM MDT for 6 counties in Colorado; 12 counties in Kansas. It was in force for 119 min.
The area
The outline as issued.
The facts
- Issued
- Jun 24, 2021, 5:31 PM MDT (23:31 UTC)
- Expired
- Jun 24, 2021, 7:30 PM MDT
- In force
- 119 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 310
Counties Cheyenne County, CO, Kiowa County, CO, Kit Carson County, CO, Lincoln County, CO, Washington County, CO, Yuma County, CO, Cheyenne County, KS, Greeley County, KS, Hamilton County, KS, Kearny County, KS, Lane County, KS, Logan County, KS, Rawlins County, KS, Scott County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS
The radar
The Goodland radar (KGLD), 67 km from the middle of the area, began a volume at 23:32 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 nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 11.5 hours before the alert went out and 131 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
- 2028 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
543
ACUS11 KWNS 242332
SWOMCD
SPC MCD 242331
KSZ000-COZ000-250130-
Mesoscale Discussion 1083
NWS Storm Prediction Center Norman OK
0631 PM CDT Thu Jun 24 2021
Areas affected...eastern Colorado/western Kansas
Concerning...Severe Thunderstorm Watch 310...
Valid 242331Z - 250130Z
The severe weather threat for Severe Thunderstorm Watch 310
continues.
SUMMARY...Severe weather risk -- mainly in the form of large hail,
along with the possibility of locally damaging wind gusts --
continues across WW 210.
DISCUSSION...Latest radar loop shows isolated strong/severe storms
-- including a left/right pair of storms originating from an earlier
supercell split near the Kiowa/Prowers County border in eastern
Colorado -- continuing across portions of WW 210. The storms are
occurring in a low-level easterly/upslope flow regime north of the
southeastern Colorado/southwestern Kansas baroclinic zone, where
ample high-based CAPE continues to support isolated/vigorous
updrafts.
The low-level easterlies are also contributing to sufficient shear
for supercells -- as evidenced by the aforementioned splitting
updraft. As such, expect continued risk for large hail, and perhaps
locally damaging winds -- particularly if additional storms can
congeal near outflow now moving southeastward/southward across
portions of eastern Colorado.
..Goss.. 06/24/2021
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...DDC...GLD...PUB...BOU...
LAT...LON 38360328 38660388 40110358 40050265 39890188 39940071
38540042 37750097 37900205 38360328SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 1:49 PM MDT | Mesoscale Discussion | SPC | Cheyenne, Kit Carson, Lincoln, Washington, Yuma | 116 min |
| Jun 24, 3:56 PM MDT | Severe Thunderstorm Watch | SPC | Bent, Cheyenne, Kiowa, Kit Carson, Lincoln, Prowers and 2 more | 6 hr |
| Jun 24, 12:36 AM MDT | Mesoscale Discussion | SPC | Atchison, Brown, Doniphan, Nemaha | 114 min |
| Jun 24, 1:20 AM MDT | Severe Thunderstorm Watch | SPC | Atchison, Brown, Doniphan, Nemaha | 6 hr |
| Jun 24, 1:45 PM MDT | Mesoscale Discussion | SPC | Atchison, Brown, Douglas, Jackson, Jefferson, Leavenworth and 7 more | 3 hr |
| Jun 24, 2:14 PM MDT | Mesoscale Discussion | SPC | Gray, Haskell, Meade, Seward | 91 min |
| Jun 24, 2:44 PM MDT | Tornado Watch | SPC | Atchison, Brown, Clay, Cloud, Doniphan, Jackson and 8 more | 5 hr |
| Jun 24, 4:30 PM MDT | Mesoscale Discussion | SPC | Brown, Clay, Cloud, Doniphan, Marshall, Nemaha and 5 more | 60 min |
| Jun 24, 5:19 PM MDT | Mesoscale Discussion | SPC | Doniphan, Wyandotte | 56 min |
Nearby
Mesoscale Discussions in Kansas, 2021Mesoscale Discussions in Colorado, 2021Every mesoscale discussion in 2021
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.