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Day 4-8 Convective Outlook  
NWS Storm Prediction Center Norman OK
0335 AM CDT Sat Sep 03 2022

Valid 061200Z - 111200Z

...DISCUSSION...
Considerable spread persists within and among the various model
output concerning the evolution and eastward acceleration of one
vigorous but co*pact short wave impulse, which is forecast to evolve
within the westerlies across the northeastern Pacific by the
beginning of this period.  Guidance has been suggestive that it
probably will progress inland sometime during the middle to latter
portion of the co*ing work week and contribute to at least some, if
not considerable, weakening of an initially prominent, persistent
mid-level high centered over the Great Basin.  It may also provide
support for substantive surface cyclogenesis across parts of the
southern Canadian Prairies/northern U.S. Great Plains into portions
of the Upper Midwest and Great Lakes region.  However, the models
also continue indicate that this may be preceded by the evolution of
a mid-level cyclonic circulation within weak flow across the lower
Mississippi Valley/northwestern Gulf coast vicinity.  It appears
that this feature will hinder, or at least slow, the return flow of
moisture to the warm sector of any developing cyclone.  At this
time, this seems to limit the potential for organized severe storm
development through this period.