Area Forecast Discussion
Issued by NWS Wilmington, OH
Issued by NWS Wilmington, OH
450 FXUS61 KILN 090620 AFDILN Area Forecast Discussion National Weather Service Wilmington OH 220 AM EDT Sat May 9 2026 .WHAT HAS CHANGED... Slightly faster progression of a cold front tonight into Sunday will limit the potential for showers on Sunday. Add a key message about the system for midweek. && .KEY MESSAGES... 1) Some showers will occur from time to time through the weekend. 2) Showers and possibly some thunderstorms expected Tuesday night into Wednesday. 2) Temperatures will be normal to below normal. && .DISCUSSION... KEY MESSAGE 1) Multiple weak disturbances moving through the base of an upper trough will continue to bring some showers to the region through the weekend. Showers moving across the area to start the period will diminish as they move east out of the region during the early to mid morning. Some weak instability will develop across northern Ohio this afternoon. The next disturbance will push a weak cold front east southeast across the Great Lakes with the tail end trailing back across northern Ohio into central Indiana. Showers and possibly some thunderstorms will develop along this front north of the area this afternoon with this activity possibly reaching the far northern counties of the forecast area. While not overly impressive, it is not out of the question that any storms could produce some small hail and gusty winds. The front will slide southeast tonight with some discrepancy within the model suite whether that makes it all of the way through the forecast area tonight or whether it lags into Sunday. A few additional showers could develop along and behind the front with the next weak impulse tonight, although coverage looks minimal. Yet another weak short wave could result in some showers moving across Kentucky on Sunday and possibly affecting the far southeast part of the forecast area, although most activity should be south of the area. KEY MESSAGE 2) A short wave moving out of the Canadian Rockies on Monday will amplify as it drops southeast creating a closed low as it moves through the Great Lakes. There is pretty good agreement within the model suite with fairly low spread in mid level height forecast until this feature passes east of the region. So relatively high confidence in forecasting that the associated surface low will pass north of the area but the trailing cold front will cross the region on Wednesday. Best chance of showers may be Tuesday night with the initial height falls. Whether much instability can develop between these departing showers and the cold front is something to watch. At this stage, forecast instability is modest at best and focused more across eastern Ohio, which also where any weak signal in AI severe outlooks is placed. KEY MESSAGE 3) Warming trend will continue for today with readings getting back to near normal. But after the cold front moves through tonight into Sunday morning, temperatures will fall back below normal. The coolest period will be Monday into Monday night when high pressure builds across the area. && .AVIATION /06Z SATURDAY THROUGH WEDNESDAY/... Showers will continue to move across the area through the early part of the period. The potential for lower ceilings associated with this as lower levels get more saturated has decreased. It may even not occur at some locations, but was not confident enough to completely take out MVFR conditions. Similarly, after the showers move off to the east the signal for some additional MVFR ceilings has become less pronounced. So only a low confidence of that occurring, but felt it better to retain some continuity with the previous TAFs. Clouds will decrease after 18Z area wide with southwest winds gusting to around 20 kt. Winds will decrease towards 00Z with only a few high to mid clouds late. OUTLOOK...MVFR ceilings possible Sunday. MVFR ceilings and visibilities possible Tuesday night into Wednesday. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...None. KY...None. IN...None. && $$ DISCUSSION... AVIATION...