Severe Weather Threat Day 2 Mon Jul 8

Wly Flow Aloft Will Increase Across Mt And Into The Nrn Plains In
Association With A Low Amplitude Shortwave Trough. With Weak Low
Pressure Forming Across Sern Mt/Ern Wy...Surface Winds Will Remain Relatively Backed And Will Maintain Ample Boundary Layer Moisture For Destabilization And Scattered Severe Storms.

To The E...A Compact Upper Trough Will Affect The Mid Atlantic States With Cool Air Aloft And Will Help To Focus A Few Thunderstorms During The Day.

Cntrl And Ern Mt Into The Wrn Dakotas...

Strengthening Upper Flow Along With Cool Air Aloft Will Result In A
Favorable Supercell Environment Across A Large Area From Cntrl Mt
Into The Dakotas And Nwrn Neb. Forcing Will Be Strongest Along The
Synoptic Front Across Cntrl/Ern Mt By Early Afternoon...And Will
Increase Ewd Into The Dakotas. Capping Will Be Minimal...Therefore
Multiple Initiation Points Are Likely Including The Black Hills. The
Severe Threat Will Persist Well Into The Evening Given An Increasing
Sely Low Level Jet. Both Supercells And Perhaps A Few Evolving Bows Will Be Possible.

Neb Into Ia...

Storms Are Expected To Develop Across Wrn Neb Where Strong Heating Will Exist And Where Ely Winds Will Maintain Moisture.

Storms Should Then Move E Or Sewd...Helping To Be Maintained By A Strengthening Low Level Jet. The Greatest Chance For Severe Storms Will Be Over Wrn And Cntrl Neb...But There Is Some Chance The Activity Could Remain Strong Toward The Mo River Overnight.

Va/Delmarva...

Moisture Should Remain Across Ern Va And The Delmarva...Which When Combined With Cool Air Aloft With The Upper Trough...May Result In Enough Instability For Thunderstorms Capable Of Marginal Hail/Wind. While Early Showers/Storms May Be Ongoing...The Best Conditional Threat Appears To Be Later In The Afternoon When Heating Can Contribute To Destabilization. Overall...There Will Be Little Focus For Development And Coverage Should Remain Isolated.


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