SPC 1630Z Day 1 Outlook

Day 1 Outlook Image

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
1033 AM CST Mon Dec 28 2020

Valid 281630Z - 291200Z


Severe thunderstorms are not expected through early Tuesday.

...Southern CA...
Low-topped showers with isolated thunderstorms will remain possible
into this evening within a steep low to mid-level lapse environment
amid meager buoyancy. The thunder threat will subside from west to
east along the coast as the final impulse embedded within the
broader shortwave trough (currently just offshore of Santa Barbara
county) moves southeast towards San Diego. 

...Northern OK and southern KS...
Strengthening warm/moist advection between 850-700 mb may yield
scant MUCAPE by 09-12Z. A swath of elevated convection is expected
to develop during this time frame and sporadic lightning flashes
will be possible.

..Grams.. 12/28/2020

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