SPC 1300Z Day 1 Outlook

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0529 AM CST Wed Jan 20 2021

Valid 201300Z - 211200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Isolated, non-severe thunderstorms should diminish later this
morning over the Lower Colorado Valley, before redeveloping this
evening into tonight across southern Arizona.

...Southern AZ and far southeast CA...
A closed upper low west of the Baja Peninsula will gradually evolve
back into an open wave by 12Z Thursday as it approaches the northern
Gulf of CA. A plume of sufficient low to mid-level moisture across
the peninsula and gulf will support periods of showers and embedded
thunderstorms mostly across the northwest portions of Mexico and
adjacent waters. Some of this activity will spread across the
international border, mainly this morning across the Lower CO Valley
and this evening into tonight over southern AZ. Meager buoyancy and
weak low-level winds should preclude a severe threat.

..Grams.. 01/20/2021

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