SPC 0830Z Day 3 Outlook

Day 3 Outlook Image

Day 3 Convective Outlook  
NWS Storm Prediction Center Norman OK
0113 AM CST Mon Dec 07 2020

Valid 091200Z - 101200Z

...NO THUNDERSTORM AREAS FORECAST...

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

...Synopsis...

An upper ridge will shift eastward across the central and into the
eastern CONUS on Wednesday. At the surface, high pressure will
persist over much of the country, and continental trajectories will
result in dry and stable conditions. A shortwave trough will dig
across the Pacific Northwest and merge with the upper low off the
southern CA/northern Baja coast. This larger-scale trough will
develop eastward across the western U.S., extending from the
northern Rockies to AZ and northwest Mexico by 12z Thursday. Strong
southwesterly deep layer flow will spread across northwest Mexico
and southern AZ/NM, with midlevel moisture increasing toward the
very end of the period. Showers will likely increase across parts of
AZ/NM after 00z, however meager instability will limit thunderstorm
potential.

..Leitman.. 12/07/2020

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