Day 4-8 Outlook

Day 4-8 Convective Outlook  
NWS Storm Prediction Center Norman OK
0232 AM CST Tue Dec 15 2020

Valid 181200Z - 231200Z

...DISCUSSION...
Medium-range models continue to indicate increasing amplification
within branching flow, downstream of a persistent strong and zonal
mid/upper jet across the western and central, southern mid-latitude
Pacific.  It appears that this will include building mid-level
ridging to the west of the U.S./Canadian Pacific coast by early next
week, though downstream short wave developments are more uncertain. 
Regardless, there currently appears little opportunity for
substantive, deep Gulf of Mexico boundary-layer moistening and
inland return flow, which is expected to contribute to the
maintenance of generally low convective potential through the
period.

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