SPC Aug 17, 2020 Day 4-8 Severe Weather Outlook

Day 4-8 Outlook

Day 4-8 Convective Outlook  
NWS Storm Prediction Center Norman OK
0311 AM CDT Mon Aug 17 2020

Valid 201200Z - 251200Z

...DISCUSSION...
Medium-range models appear to be in reasonable large-scale
agreement, in maintaining a ridge over the western U.S. and
low-amplitude troughing over the East.  However, differences exist
at smaller scales, particularly with the progression/timing of
smaller-scale features moving through the main/westerly jet expected
to reside over southern Canada and the northern U.S. through most,
if not all, of the period.  Since these features would likely be
associated with areas of greater convective coverage/intensity, this
lack of model-to-model consistency regarding these features --
suggestive to limited predictability -- makes delineation of any
severe risk areas difficult to impossible at this time.

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from SPC Forecast Products http://www.spc.noaa.gov/products/exper/day4-8/