Severe Storm Outlook Narrative (AC)
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ACUS48 KWNS 200827
SPC AC 200825

Day 4-8 Convective Outlook
NWS Storm Prediction Center Norman OK
0325 AM CDT Sun Aug 20 2017

Valid 231200Z - 281200Z

It still appears that the cold front, associated with initially
amplified upper troughing across and northeast of the Great Lakes
region, will advance off the southern New England and northern Mid
Atlantic coast early Wednesday.  It will trail back and probably
continue to advance southward across portions of the south Atlantic
and Gulf Coast states, but this will generally be south of the
mid-latitude westerlies, with severe weather potential expected to
remain limited.

Otherwise, after a significant short wave trough progresses inland
across the Canadian Rockies, northern U.S. intermountain region and
Rockies late in the work week, models indicate that large-scale
ridging will build across much of the West by next weekend, with
downstream westerlies generally split across central and eastern
North America.  Little is readily apparent at this time to suggest
more than relatively localized and/or marginal severe weather

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