Severe Storm Outlook Narrative (AC)
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ACUS48 KWNS 180846
SWOD48
SPC AC 180845

Day 4-8 Convective Outlook
NWS Storm Prediction Center Norman OK
0345 AM CDT Thu Aug 18 2022

Valid 211200Z - 261200Z

...DISCUSSION...
A positively tilted upper trough should continue to move eastward
from the Great Lakes/OH Valley regions to the East Coast from Day
4/Sunday into early next week. Modest mid-level winds attendant to
this trough and limited deep-layer shear should keep the overall
severe threat across these regions rather isolated/marginal.
Otherwise, a separate upper trough/low should move slowly inland
across parts of the Pacific Northwest and eventually the northern
Rockies from Day 4/Sunday through the early to middle portions of
next week. While some thunderstorm potential should exist across
these regions as the trough advances eastward, current indications
are that instability will remain too weak to support a threat for
organized severe thunderstorms.

..Gleason.. 08/18/2022


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