954 FXUS61 KILN 110559 AFDILN Area Forecast Discussion National Weather Service Wilmington OH 159 AM EDT Fri Apr 11 2025 .SYNOPSIS... A low pressures system moving through the Tennessee Valley will bring a chance of showers to areas along and south of the Ohio River tonight. High pressure and a dry but cooler airmass will build into the region for Friday. && .NEAR TERM /UNTIL 6 AM THIS MORNING/... Cyclonic flow on the backside of the surface low will result in abundant cloud coverage tonight. A few showers may still traverse counties south of the OH River, but radar is already showing weaker echoes late this evening. Pcpn will likely taper off before daybreak Friday. Overnight lows will dip into the 30s for most. Increased cloud coverage and sustained winds of 10-15mph will keep frost from developing. && .SHORT TERM /6 AM THIS MORNING THROUGH 6 PM SATURDAY/... An axis of surface high pressure will build into the area from the west through the day on Friday. With a fair amount of lingering low level moisture, clouds will persist through the morning hours and into early afternoon, but we may begin to see a decreasing cloud trend from the west later in the afternoon as the high builds in. Temperatures will be seasonably cool with highs in the mid 40s to lower 50s. As the high moves overhead Friday night, mostly clear skies and decreasing winds are expected. This will lead to areas of frost late as temperatures drop into the low to mid 30s. && .LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/... Closed low along the Atlantic seaboard at the beginning of the period will move further east allowing mid level ridging and surface high pressure to spread into the region over the weekend. Temperatures will be moderating, but relatively clear and calm conditions Saturday night may allow temperatures to be cold enough for frost. Robust short wave will move from the northern Plains into the upper Great Lakes Sunday night into Monday night. This will push a cold front across the forecast area on Monday with showers and some thunderstorms occurring ahead of the front. Secondary short wave dropping down the back side of the mid level trough carved out by the initial system will move through on Tuesday. Cannot rule out a few showers with this but nothing of significance. High pressure will build in Wednesday. Heading into Thursday there is timing uncertainty with the approach of the next system. Thus have kept PoPs on the low side. Temperatures will warm up briefly ahead of the front on Monday and then settle in back below normal for the rest of the period. && .AVIATION /06Z FRIDAY THROUGH TUESDAY/... Mid level trof over the area with surface front to our south. Low level cyclonic flow and CAA with a solid deck of low clouds working south across the TAF sites. Expect solid MVFR CIGs with some IFR CIGs to continue to expand southward. Best chance for a period of IFR CIGs is at KCMH/KLCK and KILN. MVFR CIGs expected to linger through most of the daytime hours for our northern terminals, but VFR improvements expected at KCVG/KLUK by early afternoon and last at KCMH/KLCK during the early evening. Sustained winds of 10-15 kts expected through majority of the TAF period, shifting from the northwest to north-northeast. Some gusts around 20 kts expected this aftn. OUTLOOK...No significant weather expected. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...None. KY...None. IN...None. && $$ SYNOPSIS...JGL NEAR TERM...Clark SHORT TERM...JGL LONG TERM... AVIATION...AR