Severe Weather Threat Day 1 Fri Dec 7

Synopsis...

A Broad Cyclonic Flow Regime Continues Over The Conus With Several Embedded Speed Maxima Moving From The Pac Nw To The Central Plains And Great Lakes.

Otherwise...One Weak Midlevel Trough Will Continue To Drift Ewd Off The Se Atlantic Coast...And A Positive Tilt Trough Will Move From The Srn Rockies/Central Plains To The Ms And Oh Valleys By Tonight.

Weak Cyclogenesis Is Expected From Srn Mo To Indiana/Nw Oh In Advance Of The Ejecting Positive Tilt Wave...And A Stronger Speed Max Crossing The Central Plains And Mid Ms Valley Overnight.

Low-Level Moisture Return From E X And The Lower Ms Valley Newd To The Lower Oh Valley Will Contribute To Weak Destabilization And The Potential For A Few Elevated Thunderstorms In A Weak Waa Regime...Mainly From 06-12z.

Elsewhere...A Coastal Front Could Back Slightly Wwd Into Ern Nc
Today. This Will Allow Sufficient Low-Level Moistening For Weak
Buoyancy And An Isolated Thunderstorm Risk Inland...Though The
Majority Of The Thunderstorms Should Remain Offshore.


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