SPC 1200Z Day 1 Outlook

Day 1 Outlook Image

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
1150 PM CST Tue Dec 08 2020

Valid 091200Z - 101200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Isolated thunderstorms will be possible tonight across parts of
southern Arizona.

...DISCUSSION...
An upper-level ridge will move across the north-central states today
as an upper-level low moves from the eastern Pacific toward the
Desert Southwest. As large-scale ascent ahead of the low moves
across southern Arizona tonight, isolated thunderstorm development
will be possible. Instability ahead of the system will be very weak
and no severe threat is expected. Elsewhere across the continental
United States, thunderstorms are not forecast today and tonight.

..Broyles/Lyons.. 12/09/2020

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