SPC 1730Z Day 2 Outlook

Day 2 Convective Outlook  
NWS Storm Prediction Center Norman OK
1111 AM CST Tue Dec 08 2020

Valid 091200Z - 101200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are not expected on Wednesday.

...Synopsis...
Upper troughing extending throughout the Intermountain West early
Wednesday is forecast to progress eastward throughout the day,
ending the period over the MS Valley. To the west of the upper
ridge, an upper low off the southern CA/Baja coast early in the
period is expected to gradually move eastward/east-northeastward
into the Lower CO River Valley. At the same time, a shortwave trough
entering the Pacific Northwest/southern British Columbia will move
eastward through Alberta and the northern Rockies.

At the surface, high pressure will promote dry low-level
trajectories and resulting dry and stable conditions. Showers are
anticipated as mid-level moisture increases across AZ late Wednesday
night/early Thursday morning. However, the lack of sufficient
instability should preclude thunderstorms.

..Mosier.. 12/08/2020

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