SPC AC 201906

   Day 3 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0106 PM CST Wed Nov 20 2024

   Valid 221200Z - 231200Z

   ...NO SEVERE THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   Isolated to scattered thunderstorms are possible along the Pacific
   Northwest Coast on Friday.

   ...Synopsis...
   A large upper low will start to move off the East Coast on Friday.
   In its wake, a dry/cool continental airmass will overspread the
   eastern CONUS which will result in no thunderstorm threat. 

   ...Pacific Northwest Coast...
   Cooling air aloft across the northeast Pacific, associated with the
   approaching mid-level trough, will lead to enough instability over
   the water to support some thunderstorm activity. Some of these
   thunderstorms may impact coastal areas during the day on Friday.
   Very strong synoptic winds are likely along the coast as a sub-990mb
   low moves north along the coast. Thunderstorm activity could enhance
   some of these winds and lead to increased wind damage threat, but
   instability is too limited for a marginal risk at this time.

   ..Bentley.. 11/20/2024

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