This page has daily 12Z model output discussion as it comes in. Discussion updated Monday-Friday by 1:15p.
HEADLINE: MID-DAY GFS WETTER IN WEEK 2 IN OHIO VALLEY…
North America: The 12z GFS is similar though day 7 to the previous runs. It shifts the precip from the early week 2 front further north and west and also weakens the trough a bit behind it, but still supports mid-week 2 freeze risks in the central belt and Great Lakes.
South America: No major changes into next weekend.
Dr. Ryan Truchelut