SPC AC 190058
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0658 PM CST Sat Feb 18 2017
Valid 190100Z - 191200Z
...NO THUNDERSTORM AREAS FORECAST...
Although a lightning strike or two may be possible along the
immediate Oregon coast, thunderstorms are not expected across the
continental United States overnight.
...Oregon Coastal Areas...
Cooling mid-level temperatures and increasing ascent as a shortwave
trough approaches the Pacific Northwest may result in enough
instability along the Oregon coast for a lightning strike or two
early Sunday morning. Cool surface temperatures and weak buoyancy
will limit the overall thunderstorm risk.
A strong shortwave trough will continue to move across the southwest
United States and northern Mexico overnight. However, the coldest
mid-level air is now south of the United States-Mexico border with
any destabilization occurring across Mexico. The lack of instability
across the Desert Southwest should preclude thunderstorm development
...Southeast United States...
Marginal instability and weakening low-level convergence should
limit the thunderstorm potential overnight.
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NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0600Z