SPC AC 061644

   Day 2 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1144 AM CDT Thu Sep 06 2018

   Valid 071200Z - 081200Z

   ...NO SEVERE THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   Only general thunderstorms are expected across the country on
   Friday.

   ...Synopsis...
   An upper ridge will slowly move east into central Canada and the
   central Plains, flanked by large-scale upper troughs across the
   Pacific Northwest and the Northeast. The southern half of the CONUS
   will generally continue a weak flow regime with relatively high
   heights, but pockets of cool air aloft will exist periodically in
   association with areas of convection. At the surface, high pressure
   will be centered over Ontario, with the cool/dry air expanding south
   with a front situated from KS to NJ by Saturday morning. South of
   this boundary, a vast moist air mass will stretch from the southern
   Plains to the Mid Atlantic, with scattered rain and storms scattered
   about.

   One potential area of storm development during the day will be over
   the Appalachians from WV into VA, and spreading into central VA by
   evening. Heating of a moist air mass will lead to moderate
   instability, although winds aloft will be weak. Still, a few
   clusters of storms may pose a small hail and/or gusty wind threat.

   Another potential area of storm organization will be with the
   remnants of Gordon which will move from AR into MO.  This
   concentrated area of low-level convergence will lead to heavy rain
   and storms, but low level shear is unlikely to be strong enough for
   any severe threat.

   ...MAXIMUM RISK BY HAZARD...
   Tornado:  <2%     - None
   Wind:     <5%     - None
   Hail:     <5%     - None

   ..Jewell.. 09/06/2018

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