


Severe Storm Outlook Narrative (AC)
Issued by NWS
Issued by NWS
697 ACUS48 KWNS 290834 SWOD48 SPC AC 290833 Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0333 AM CDT Fri Aug 29 2025 Valid 011200Z - 061200Z ...DISCUSSION... A broad northwesterly upper flow regime will be in place across the CONUS early this week, before a pronounced mid-level trough amplifies greatly while tracking across the eastern CONUS through the remainder of the week. As this occurs, surface low development is likely around the Great Lakes, with a strong cold front poised to sweep across the northern Plains to the East Coast during the Days 5-8 (Tuesday-Friday) time frame. Cool and stable conditions will usher in behind the cold front. However, Gulf moisture may advect north-northeast ahead of the front along the East Coast toward the end of the week. Assuming forcing for ascent is not purely anafrontal, it is plausible that at least isolated severe storms could develop along the East Coast around Days 7-8 (Thursday-Friday). However, confidence in the specific timing and magnitude of any severe threat this far in advance is too low for the introduction of severe probabilities at this time. ..Squitieri.. 08/29/2025