SPC 1630Z Day 1 Outlook

Day 1 Outlook Image

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
1002 AM CST Sat Dec 26 2020

Valid 261630Z - 271200Z


Thunderstorm potential will be negligible across much of the
contiguous U.S. through early Sunday, except along coastal
Washington this evening.

...Coastal WA...
The next in a series of low-amplitude shortwave impulses, currently
well west of OR, should approach coastal WA this evening. A zone of
focused ascent attendant to this impulse in conjunction with steep
low to mid-level lapse rates should yield a period of scattered
low-topped convection approaching the coast. Scant buoyancy (SBCAPE
below 250 J/kg) may support very isolated lightning flashes and this
threat appears marginally sufficient for a 10-percent thunder area.

..Grams.. 12/26/2020

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