US Short Range Weather to Dec 20

Heavy Snow And Possible Icing Expected Across New England...

Cold And Stormy Pattern Will Persist Over The Western Conus...

Severe Weather Possible For Lower Mississippi Valley Wednesday...

A Well Amplified And Progressive Mid-Level Pattern Will Be
Featured For The Middle Of December.

The Lead System Is Currently Racing Through The Lower Missouri Valley With Continual Strengthening As It Reaches The Interior Northeast By Tuesday Afternoon. Much Of The Action With This Disturbance Is Forecast To Congregate Along The Advancing Cold Front As Moist And Unstable Air Is Lifted Along The Boundary.

Given Such Conditions In Place...Showers And Thunderstorms Have Prevailed Along The Eastern Gulf Coast With Severe Weather Possible Among The Stronger Convective Elements.

The Other Aspect Of This System Will Be The Wintry Precipitation Expected Over The Northeastern Conus. As The Upper Trough Becomes Oriented Favorably From Northwest-To-Southeast...The Surface Low Should Gradually Deepen Drawing Additional Atlantic Moisture Inland. Surface Ridging To The North Will Allow Cold Air To Focus At The Surface Thereby Maintaining Snow As The Dominant Precipitation Type. Additionally...Some Milder Air Will Override The Warm Front Allowing Some Freezing Rain To Add To The Wintry Mix.

The Latest Winter Weather Desk Suggests These Accumulations Should Remain Rather Light While Snowfall Amounts Exceeding A Foot Will Be Possible Over Northern New Hampshire And Into Maine.

Yet Another Pacific System Has Slammed Onshore Into The Pacific
Northwest Maintaining Below Normal Temperatures Along With
Unsettled Atmospheric Conditions. Current National Weather Service
Hazards Indicate A Variety Of Winter Storm-Related Watches/ Warnings/ Advisories Are In Effect Over Much Of The Western Third Of The Country. The Rather Cold Air Aloft Arriving With This Upper Trough Should Lower Snow-Levels Considerably Over The Region. The Region Of Best Upslope Flow And Low-Level Moisture Will Reside Across The Cascades...Wasatch...Along With The Colorado Rocky Mountains.

Current Forecasts Suggest 1 To 2 Feet Of Snow Being Possible With Even Higher Amounts In The Taller Mountain Peaks. As This System Quickly Progresses Eastward...Light To Moderate Snow Is Expected North Of The Warm Front Anchoring The Southern/Central Plains.

This Is Forecast To Impact Regions From The Central High Plains Eastward Into The Middle Mississippi Valley. The Dynamic Nature Of This System Is Also Expected To Bring A Threat For Severe Thunderstorms Across The Lower Mississippi Valley On Wednesday.


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