Severe Weather Threat Aug 20-24

A Series Of Low Amplitude Upper-Level Shortwave Troughs Will Move
Across The Nrn Plains And Upper Ms Valley During The Day4-8 Period.

Low-Level Intrusions Of Cool/Stable Air Will Be Followed By A Sly
Return Of Warm/Moist Air Over The Area...Which May Yield Rounds Of
Isolated Severe Storms.

However...Model Consensus During The Medium Range Decreases With Time With Respect To Troughing Versus Ridging Over The Ern Half Of The Nation.

As A Result...The Location...Timing...And Magnitude Of Moisture /Instability Over The N-Cntrl States Is Uncertain...Which Precludes Highlighting Severe Risk Areas Attm.


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