Severe Weather Threat Day 2 Sat Aug 24

Nrn Plains/Upper Ms Valley...

An Upper-Level Ridge Will Build Newd Into The Wrn Great Lakes Region Saturday As A Cold Front Moves Sewd Across Ern Nd And Nrn Sd.

Some Sfc-Based Storms Appear Likely To Initiate Along The Boundary
Saturday Afternoon As A Cap Weakens And Moderate Destabilization
Takes Place. Forecast Soundings At Grand Forks Nd And Aberdeen
Sd...Along The Corridor Of Strongest Instability...Show Mlcape In The 2000 To 3000 J/Kg Range With Sfc Dewpoints In The Upper 60s F.

This Along With 20 To 30 Kt Of Deep Layer Shear Should Be Sufficient
For A Marginal Severe Threat. The Moist Boundary Layer Combined With Steep Low-Level Lapse Rates Should Help Enhance Downdraft
Acceleration Enough For A Marginal Wind Damage Threat.

Hail Will Also Be Possible Especially Across The Srn Nd And Nrn Sd Where Mid-Level Lapse Rates Are Forecast To Be Steep.

A Marginal Severe Threat May Also Develop Ewd Across Much Of Mn Where Moderate Instability And Adequate Deep Layer Shear Is Forecast.


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