MD 2127 CONCERNING SEVERE THUNDERSTORM WATCH 676… FOR PORTIONS OF SOUTHWESTERN NEBRASKA
Mesoscale Discussion 2127
NWS Storm Prediction Center Norman OK
0548 PM CDT Sat Sep 09 2023
Areas affected…portions of southwestern Nebraska
Concerning…Severe Thunderstorm Watch 676…
Valid 092248Z – 092345Z
The severe weather threat for Severe Thunderstorm Watch 676
continues.
SUMMARY…The severe threat continues across Severe Thunderstorm
Watch 676. Severe hail may occur with the stronger storm cores, but
severe winds should become the dominant threat as the MCS cold pool
matures.
DISCUSSION…Supercells, with a history of large hail, have merged
their cold pools and have grown upscale into a south-southwestward
propagating MCS. This western flank of this MCS has become anchored
along the lee trough/confluence boundary, and this region may
support the most robust updraft development over the next couple of
hours, with large hail remaining a concern. The shared cold pool
with this storm cluster/MCS should gradually deepen and strengthen
into evening, which may also support severe gusts, especially with
any bowing segments that can develop.
..Squitieri.. 09/09/2023
…Please see www.spc.noaa.gov for graphic product…
ATTN…WFO…GID…LBF…GLD…
LAT…LON 40900154 41080066 41209963 41029894 40729887 40369932
40310008 40300099 40360140 40900154
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