US Preliminary Extended Weather thru Dec 14

The Forecast Over The Conus Next Week Will Be Dominated By
Anomalous Upper Ridging Over The Northeast Pacific To The South Of Alaska That Teleconnects Well To Troughing Over The Rockies Into
The Southwest.

Farther Downstream... Above Normal Heights Are Forecast To Be Centered Over The Western Caribbean And Stretch Northward Through The Eastern Third Of The Conus.

The Models And Ensembles Generally Agree On This Scenario But Differ On Timing Of Energy Riding Up And Over The Ne Pacific Ridge And Through The West.

The Gfs/Gefs Are Generally More Progressive With The Flow While The Ecmwf/Ecmwf Ensemble Mean Are Slower... But All Paint A Similar Picture.

Given The Trend In The Short Term Forecast /Through Day 3/ Of A Slower Movement Of The Eastern System... The Forecast Into The Medium Range Period Favored The Slower 00z Ecmwf But Tempered By Its 12z/06 Ensemble Mean. This Will Keep Energy Digging Into The Sw While Maintaining An Oscillating Northern Stream Boundary Along/South Of The Us/Canadian Border... In Addition To A Lingering Boundary Over Florida.


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