SPC MD 1066



MD 1066 CONCERNING SEVERE THUNDERSTORM WATCH 321… FOR PORTIONS OF SOUTHEASTERN NE…SOUTHWESTERN IA…NORTHEASTERN KS…AND NORTHWESTERN MO

MD 1066 Image

Mesoscale Discussion 1066
NWS Storm Prediction Center Norman OK
0148 AM CDT Wed Jul 01 2020

Areas affected...Portions of southeastern NE...southwestern
IA...northeastern KS...and northwestern MO

Concerning...Severe Thunderstorm Watch 321...

Valid 010648Z - 010815Z

The severe weather threat for Severe Thunderstorm Watch 321
continues.

SUMMARY...An isolated threat for mainly damaging winds continues
in/near Severe Thunderstorm Watch 321.

DISCUSSION...Recent radar imagery shows a well developed MCS arcing
along/near the MO River. The strongest portion of this line is along
the southern flank, where modest (30-35 kt) moisture influx is
occurring in tandem with a low-level jet. A reservoir of very strong
to extreme MUCAPE (4000-5000+ J/kg) is present to the
south-southeast of the southern flank. Current expectations are for
the MCS to move southeastward along an instability gradient into
northeastern KS and northwestern MO over the next couple of hours.
Given the linear mode, isolated damaging wind gusts from
thunderstorm outflow will likely remain the primary threat. The
greatest wind threat may focus where updrafts and corresponding
reflectivity can remain in close proximity to the outflow, which has
surged ahead of the line in most areas.

..Gleason.. 07/01/2020

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

ATTN...WFO...DMX...EAX...OAX...TOP...

LAT...LON   40899727 40849638 40939599 41349584 41869575 41859513
            40549455 39539454 39459557 40019728 40899727 

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