US Extended Forecast Updated thru Sep 28

...Overview And Preferences...

The 21/00z Cycle Offered Good Ensemble And Deterministic Run
Continuity Into Day 5 Across The West And Northeast Pacific...With
The Ecens/Naefs Means Providing The Basis For The Days 6-7
Movement Of The Upper-Level Trough/Ridge Couplet Downstream Into The Central And Eastern Usa.

The Manual Graphics Maintained Good Continuity Through Day 5...And Used Aspects Of The Deterministic 21/00z Ecmwf To Handle Some Of The Smaller Scale Details Over The Plains And Northern Gulf Of Mexico/Southeast.

...Sensible Weather Highlights...
Frontal Boundary Stalled Near Florida And The Southeast Coast
Should Provide A Focus For Periods Of Moderate To Heavy Rainfall.

In The West...A Prolonged Period Of Cool/Wet Weather...With
High-Elevation Snow Behind The H5 Trough Axis. Ahead Of The
Front...Temperatures Should Warm Nicely Towards 80f As Far North
As The Upper Ms Valley Day 6...A Good +10f To +15f Above Normal.
Over The East Coast...Generally A Cool And Dry Medium Range

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