Alert archive / Kansas / Mesoscale Discussions in 2021

Mesoscale Discussion 1085

June 24, 202135 counties in Kansas

The Storm Prediction Center issued this mesoscale discussion at Jun 24, 2021, 8:13 PM CDT for 35 counties in Kansas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jun 24, 2021, 8:13 PM CDT (01:13 UTC)
Expired
Jun 24, 2021, 10:15 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Concerning
Severe thunderstorm watch 310
All 35 counties

Barton County, KS, Edwards County, KS, Ellis County, KS, Ellsworth County, KS, Finney County, KS, Ford County, KS, Gove County, KS, Graham County, KS, Gray County, KS, Greeley County, KS, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Kiowa County, KS, Lane County, KS, Lincoln County, KS, Logan County, KS, Mitchell County, KS, Ness County, KS, Osborne County, KS, Pawnee County, KS, Phillips County, KS, Pratt County, KS, Reno County, KS, Rice County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Scott County, KS, Sheridan County, KS, Stafford County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Wichita County, KS

The radar

The Dodge City radar (KDDC), 105 km from the middle of the area, began a volume at 01:14 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

Dodge City, (KDDC), launched 00:00Z, 1.2 hours before the alert went out and 104 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.

Skew-T log-pSkew-T log-p diagram, Dodge City, at 00:00Z on 2021-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1222 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Dodge City, at 00:00Z on 2021-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1222 J/kg
Mixed-layer CIN
-101 J/kg
Mixed-layer LCL
2487 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
166 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.4

Open this sounding in Storm Lab

The text

As transmitted.

078 
ACUS11 KWNS 250113
SWOMCD
SPC MCD 250113 
KSZ000-COZ000-250315-

Mesoscale Discussion 1085
NWS Storm Prediction Center Norman OK
0813 PM CDT Thu Jun 24 2021

Areas affected...portions of western and central Kansas...and
vicinity

Concerning...Severe Thunderstorm Watch 310...

Valid 250113Z - 250315Z

The severe weather threat for Severe Thunderstorm Watch 310
continues.

SUMMARY...Strong/severe storms continue over parts of eastern
Colorado and adjacent/far western Kansas.  As risk expands/spreads
eastward with time this evening, an eventual/new WW extending into
central Kansas appears likely.

DISCUSSION...Latest radar loop shows storms congealing into a fairly
intense cluster over the Cheyenne/Kit Carson County vicinity in
east-central Colorado, with some initial/subtle hints of possible
mesolow development.  Farther southeast, a somewhat loosely
organized band of storms is indicated, with an eventual merging of
these two convective areas expected with time.

As the eastern Colorado/western Kansas convection evolves, eastward
advance of the storms will eventually result in severe risk
spreading across eastern portions of WW 310, into central Kansas. 
This would likely warrant eventual/new WW issuance, as a developing
low-level jet supports convective continuation.  Meanwhile though, a
small but rather vigorous cluster of updrafts has developed just
west of Pratt, KS, east of the southeastern corner of WW 310.  We
will continue to monitor evolution of this convective cluster, as
any additional increase in convection could force earlier
consideration for a new WW east of WW 310 than may otherwise have
been necessary.

..Goss.. 06/25/2021

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...TOP...ICT...GID...DDC...GLD...PUB...

LAT...LON   38570228 39110192 39749998 39809933 39679815 38749774
            37789795 37559898 37480122 38570228

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 24, 7:29 PM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Jackson, Marshall, Nemaha and 2 more61 min
Jun 24, 8:33 PM CDTMesoscale DiscussionSPCAtchison, Doniphan, Douglas, Franklin, Jefferson, Johnson and 3 more87 min
Jun 24, 8:57 PM CDTSevere Thunderstorm WatchSPCAtchison, Douglas, Franklin, Geary, Jackson, Jefferson and 9 more6 hr
Jun 24, 10:30 PM CDTMesoscale DiscussionSPCClark, Edwards, Ellis, Finney, Ford, Gove and 14 more60 min
Jun 25, 1:40 AM CDTMesoscale DiscussionSPCAllen, Anderson, Butler, Chase, Coffey, Dickinson and 16 more3 hr
Jun 25, 11:56 AM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Coffey and 17 more3 hr
Jun 25, 1:21 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Jewell, Norton, Phillips, Rawlins and 4 more114 min
Jun 25, 1:43 PM CDTSevere Thunderstorm WatchSPCAllen, Anderson, Bourbon, Butler, Chase, Coffey and 32 more9 hr
Jun 25, 2:11 PM CDTMesoscale DiscussionSPCClark, Finney, Ford, Gove, Grant, Gray and 18 more2 hr
Jun 25, 2:30 PM CDTSevere Thunderstorm WatchSPCBarber, Barton, Clark, Comanche, Edwards, Finney and 20 more10 hr
Jun 25, 3:07 PM CDTSevere Thunderstorm WatchSPCCheyenne, Decatur, Gove, Graham, Greeley, Jewell and 11 more6 hr
Jun 25, 3:13 PM CDTMesoscale DiscussionSPCAnderson, Chase, Coffey, Douglas, Franklin, Johnson and 6 more2 hr
Jun 25, 5:54 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Gove, Graham, Greeley, Jewell and 11 more66 min
Jun 25, 6:21 PM CDTMesoscale DiscussionSPCAllen, Bourbon, Butler, Greenwood, Harvey, Linn and 4 more84 min

Nearby

Mesoscale Discussions in Kansas, 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.