ACUS11 KWNS 220413
SWOMCD
SPC MCD 220413=20
NDZ000-SDZ000-MTZ000-220545-

Mesoscale Discussion 1972
NWS Storm Prediction Center Norman OK
1113 PM CDT Wed Aug 21 2024

Areas affected...eastern Montana/western North Dakota

Concerning...Severe Thunderstorm Watch 643...

Valid 220413Z - 220545Z

The severe weather threat for Severe Thunderstorm Watch 643
continues.

SUMMARY...Severe threat continues to gradually diminish across
eastern Montana/WW 643.

DISCUSSION...Over the last couple of hours, a noted/gradual decrease
in convective coverage -- and particularly intensity -- has
occurred, as the low-level airmass gradually stabilizes. While
convection will likely linger over the next couple of hours,
including a stronger storm or two at times capable of producing
marginally severe hail and/or wind, new WW issuance is not
anticipated. As storms move eastward into North Dakota with time,
WW 643 will likely be able to be cancelled prior to its scheduled
22/07Z expiration.

..Goss.. 08/22/2024

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9-tFS2Cgk5OZG6XpenvOiDgTK7tefm2GHm0R8xq6EGzaephaiRxVFwYs5wsBCMh81EizdsOX_= Mw0TqLyWLluMGZBZ5Q$ for graphic product...

ATTN...WFO...BIS...UNR...BYZ...GGW...

LAT...LON 49000430 48990278 47380222 46400279 45890399 46060468
48000518 49000430=20


=3D =3D =3D
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