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SPC Oct 17, 2018 Day 4-8 Severe Weather Outlook

Day 4-8 Outlook
      
Day 4-8 Outlook Image
Day 4-8 Convective Outlook  
NWS Storm Prediction Center Norman OK
0159 AM CDT Wed Oct 17 2018

Valid 201200Z - 251200Z

...DISCUSSION...
Thunderstorm activity across much of the CONUS will remain minimal
through the Wed/D8 period, owing to relatively stable/polar air
masses.

For Sat/D4-Sun/D5, a large upper trough will move from the Great
Lakes across the Northeast, with high pressure moving from the
Plains toward the East Coast. A narrow area of unstable air may
briefly exist across the coastal Southeast on Sat/D4 ahead of a
rapidly moving cold front, but only general thunderstorms are
expected as cool/dry air rapidly overtakes the region. Thereafter,
northwest flow aloft will remain across much of the Northeast for
the D6-D8 period, with another area of high pressure maintaining
stable conditions.

Elsewhere, a few thunderstorms are possible Sat/D4 into Sun/D5
across the lower CO Valley and Mogollon Rim in association with a
weak upper low providing cool temperatures aloft. Any severe threat
will be marginal, with perhaps small hail or locally gusty winds.

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