171
ACUS48 KWNS 200733
SWOD48
SPC AC 200731

Day 4-8 Convective Outlook
NWS Storm Prediction Center Norman OK
0231 AM CDT Fri Sep 20 2024

Valid 231200Z - 281200Z

...DISCUSSION...
Th latest suite of forecast guidance continues to show large spread
during the Day 4-8/Mon-Fri period. While the evolution of a central
U.S. upper trough is uncertain, it seems likely general troughing
across the eastern half of the U.S. will develop. Some severe
potential could develop around Days 4-5/Mon-Tue from the Midwest to
the Mid-Atlantic as a surface cold front advances east into a
seasonally moist airmass amid moderately enhanced mid/upper flow.
Severe potential should decrease late in the forecast period as the
surface trough moves offshore the Atlantic and Gulf coasts and
surface high pressure builds across the Midwest.

..Leitman.. 09/20/2024