SPC Jun 20, 2017 Day 4-8 Severe Weather Outlook

Day 4-8 Outlook

Day 4-8 Convective Outlook  
NWS Storm Prediction Center Norman OK
0358 AM CDT Tue Jun 20 2017

Valid 231200Z - 281200Z

...DISCUSSION...
A cyclonic-flow regime and strongest flow aloft are expected to
shift east across the north-central states into this weekend,
reaching the eastern U.S. early next week.  A surface front is
expected to shift southward with the greatest instability relegated
to areas generally south of the stronger flow aloft and bulk shear. 
Thunderstorms will be possible in vicinity and south of the cold
front through the forecast period, while a large surface anticyclone
advances east of the Rockies beginning on Day 6 (Sun).  However, the
lack of stronger deep-layer shear with southward and eastward extent
across the U.S. precludes the delineation of any severe-weather
threat areas.

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