ACUS11 KWNS 100149
SWOMCD
SPC MCD 100149=20
SDZ000-NEZ000-WYZ000-MTZ000-100245-

Mesoscale Discussion 2130
NWS Storm Prediction Center Norman OK
0849 PM CDT Sat Sep 09 2023

Areas affected...Portions of eastern Wyoming...extreme southwestern
South Dakota...extreme northwestern Nebraska

Concerning...Severe Thunderstorm Watch 679...

Valid 100149Z - 100245Z

The severe weather threat for Severe Thunderstorm Watch 679
continues.

SUMMARY...The severe threat continues across Severe Thunderstorm
Watch 679. Large hail is the main threat with the stronger storms.

DISCUSSION...Multiple supercell thunderstorms are persisting across
eastern WY, with MRMS MESH indicating severe hail occurring with
multiple storms (perhaps exceeding 2 inches in diameter with the
storm in northern Platte County). Though boundary-layer decoupling
is in progress, strong vertical shear, steep mid-level lapse rates,
and associated residual CAPE atop the boundary layer will support a
continued severe hail threat for at least a few more hours.

..Squitieri.. 09/10/2023

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-1536lhoSiV8MNtXluwREVxM1UMOO7k-fHwxl7PV4XsGcsHjFXxfOABuTI_lLrzmzSGXKNWjJ= u9vFvLb-Mdj3Zrhi3k$ for graphic product...

ATTN...WFO...UNR...CYS...BYZ...RIW...

LAT...LON 41750497 43040618 44190623 44900597 45000517 44840451
44430411 43800380 43000365 42030371 41750497=20


=3D =3D =3D
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