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< Day 2 Outlook   Day 4 - 8 Outlook >
Jan 23, 2018 0830 UTC Day 3 Severe Thunderstorm Outlook
Updated: Tue Jan 23 08:07:14 UTC 2018 (Print Version | 20180123 0830Z Day 3 shapefile | 20180123 0830Z Day 3 KML)
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 Forecast Discussion
   SPC AC 230807

   Day 3 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0207 AM CST Tue Jan 23 2018

   Valid 251200Z - 261200Z

   ...NO SEVERE THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   A few thunderstorms will be possible Thursday across coastal
   Washington into western Oregon and parts of northern California.

   ...Synopsis...
   The Day 2 Pacific trough will remain progressive on Thursday and
   Thursday night, advancing farther inland across the western U.S.
   into the Rockies, while a lead shortwave trough reaches the northern
   Plains.  Two upstream shortwave troughs moving through the western
   portion of the Pacific trough should aid in upward vertical motion
   to support showers across western OR and northern CA Thursday
   afternoon, and then across western OR/WA Thursday night.  Forecast
   soundings suggest cold 500-mb temperatures (less than -30 C) and
   steep lapse rates will allow buoyancy to become deep enough for
   charge separation, with a few thunderstorms possible as the
   shortwave troughs pass through these areas.

   ..Peters.. 01/23/2018

   CLICK TO GET WUUS03 PTSDY3 PRODUCT

   NOTE: THE NEXT DAY 3 OUTLOOK IS SCHEDULED BY 0830Z

        
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Page last modified: January 23, 2018
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