Clearpost.online It's your post, so post it!

Mesoscale Discussion 1728
NWS Storm Prediction Center Norman OK
0250 PM CDT Sat Aug 27 2022

Areas affected...western Iowa into far southern Minnesota

Concerning...Severe potential...Watch possible 

Valid 271950Z - 272215Z

Probability of Watch Issuance...40 percent

SUMMARY...Storms are expected to increase in coverage after 21Z from
the Nebraska/Iowa border toward southern Minnesota.

DISCUSSION...An area of rain and clouds is currently positioned over
eastern NE, associated with a midlevel vorticity maximum. Clouds
have retarded heating there, but warmer temperatures have developed
to the south and east. As such, objectively analyzed CAPE values are
maximized from MO into central and eastern IA, with MLCAPE over 2500
J/kg. 

To the north, outflow continues to push south across WI, with the
boundary extending northwestward and modifying across southern MN.
This area also will destabilize further as southerly surface winds
persist south of the boundary.

As the midlevel wave pushes east, the co*bination of pockets of
heating, warm advection, and cooling aloft may lead to a cluster of
storms, with at least a marginal wind or hail threat as it evolves
northeastward across IA. Other storms may also form over southern MN
into northern IA, and this region may have a greater severe threat
overall due to focus/interactions along the boundary.

..Jewell.. 08/27/2022

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...ARX...MPX...DMX...FSD...OAX...

LAT...LON   41079573 41839599 42399625 42729647 43309620 43679550
            44159437 44419366 44289303 44009268 43609240 43309231
            42789316 42499382 42159404 41509449 41189487 41039515
            41079573