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Day 4-8 Convective Outlook  
NWS Storm Prediction Center Norman OK
0345 AM CDT Mon Aug 22 2022

Valid 251200Z - 301200Z

...DISCUSSION...
A shortwave trough is expected to eject eastward from the Pacific
Northwest across the northern Rockies/northern High Plains on
D5/Friday, and northern Plains/Upper MS Valley on D6/Saturday.
Progression of this system will help dampen the persistent
subtropical ridging, with broad troughing likely in place across the
CONUS by early D7/Sunday. 

Thunderstorms are possible ahead of this shortwave across the
northern High Plains on D5/Friday as low-level moisture and
associated buoyancy return northward amid persistent
southerly/southeasterly flow. Thunderstorms are also anticipated
D6/Saturday over the Upper MS Valley as the shortwave continues
eastward. Mid-level flow associated with this shortwave will be
modest, but isolated severe thunderstorms currently appear possible
on both D5/Friday and D6/Saturday. Stronger low-level flow is
anticipated across the Upper MS Valley on D6/Saturday, which may
lead to greater severe thunderstorms coverage.

Another shortwave trough may traverse the northern CONUS early next
week, but variability within the guidance limits forecast
confidence.