Alert archive / Missouri / Mesoscale Discussions in 2021

Mesoscale Discussion 1095

June 25, 202112 counties in Kansas; 13 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Jun 25, 2021, 3:13 PM CDT for 12 counties in Kansas; 13 counties in Missouri. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jun 25, 2021, 3:13 PM CDT (20:13 UTC)
Expired
Jun 25, 2021, 5:15 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Concerning
Severe thunderstorm watch 314
All 25 counties

Anderson County, KS, Chase County, KS, Coffey County, KS, Douglas County, KS, Franklin County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Lyon County, KS, Miami County, KS, Osage County, KS, Wyandotte County, KS, Bates County, MO, Benton County, MO, Camden County, MO, Cass County, MO, Henry County, MO, Hickory County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Morgan County, MO, Pettis County, MO, St. Clair County, MO, Vernon County, MO

The radar

The Pleasant Hill radar (KEAX), 43 km from the middle of the area, began a volume at 20:15 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 12:00Z, 8.2 hours before the alert went out and 122 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, Topeka, KS at 12:00Z on 2021-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 146 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, Topeka, KS at 12:00Z on 2021-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -236 square meters per square second.19395878Sfc1 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
146 J/kg
Mixed-layer CIN
-476 J/kg
Mixed-layer LCL
1200 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
-236 m²/s²
0-3 km storm-relative helicity
-188 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

662 
ACUS11 KWNS 252014
SWOMCD
SPC MCD 252013 
MOZ000-KSZ000-252215-

Mesoscale Discussion 1095
NWS Storm Prediction Center Norman OK
0313 PM CDT Fri Jun 25 2021

Areas affected...Parts of east central Kansas into west central
Missouri

Concerning...Severe Thunderstorm Watch 314...

Valid 252013Z - 252215Z

The severe weather threat for Severe Thunderstorm Watch 314
continues.

SUMMARY...Thunderstorm activity may continue to intensify and
consolidate near or south through southeast of the Kansas City area
between now and 6-7 PM CDT, accompanied by increasing potential for
strong surface gusts.

DISCUSSION...Thunderstorm development remains mostly discrete in
nature, but increasing in number, focused within/just to the warm
side of the zone of stronger differential associated with a remnant
outflow boundary.  This currently extends just east of Hutchinson
into the vicinity of an outflow boundary intersection, south of the
Kansas City area, where it appears that convection may begin to more
substantively merge/consolidate through 22-00Z.  Aided by inflow of
very moist boundary-layer air characterized by CAPE in excess of
3000 J/kg, considerable further convective intensification and
upscale growth appears probable.  

Although mid-level flow may have weakened some during the past few
hours, vertical shear may be sufficient to contribute to
organization.  Regardless, given the magnitude of CAPE, latent
heating in lower/mid-levels could still contribute to the evolution
of a mesovortex, strengthening rear inflow and increasing potential
for strong surface gusts near/south through southeast of the Kansas
City area by early evening.  There may be a tendency for strongest
activity to begin to propagate southeastward along a remnant outflow
boundary toward areas near/northwest of the Lake of the Ozark
vicinity thereafter.

..Kerr.. 06/25/2021

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

ATTN...WFO...LSX...SGF...EAX...TOP...ICT...

LAT...LON   39179376 38559249 38009265 37749392 37999496 37879592
            38299704 39219534 39179376

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, 8:13 PM CDTMesoscale DiscussionSPCBarton, Edwards, Ellis, Ellsworth, Finney, Ford and 29 more2 hr
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, 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
Jun 24, 11:23 PM CDTMesoscale DiscussionSPCAudrain, Boone, Callaway, Clark, Cole, Cooper and 16 more2 hr
Jun 24, 11:47 PM CDTTornado WatchSPCAudrain, Callaway, Lincoln, Montgomery, Pike, Ralls and 4 more4 hr
Jun 25, 12:57 PM CDTMesoscale DiscussionSPCBollinger, Cape Girardeau, Madison, Perry2 hr
Jun 25, 4:46 PM CDTMesoscale DiscussionSPCAudrain, Boone, Callaway, Cole, Franklin, Gasconade and 14 more59 min
Jun 25, 5:06 PM CDTSevere Thunderstorm WatchSPCAudrain, Boone, Callaway, Camden, Cole, Crawford and 25 more6 hr

Nearby

Mesoscale Discussions in Missouri, 2021Mesoscale 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.