Area Forecast Discussion
Issued by NWS Wilmington, OH

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020 FXUS61 KILN 261011 AFDILN Area Forecast Discussion National Weather Service Wilmington OH 611 AM EDT Thu Jun 26 2025 .SYNOPSIS... Hot and humid conditions, along with scattered afternoon and evening thunderstorms, will continue through Friday. Precipitation chances will then continue at times into early next week. Temperatures will return to more seasonable readings toward mid next week. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... Mid level ridging in place over the Ohio and Tennessee Valleys will lead to another hot and humid day across the region. This will allow for good instability to develop through the day with scattered thunderstorms developing once again through the afternoon hours. With light flow through the column and PWs in the 1.5 to 2 inch range, locally heavy rainfall will be possible this afternoon. It will also be tough to rule out isolated damaging wind gusts with some of the stronger thunderstorms. Highs this afternoon will be in the lower 90s. As a result, heat indices in the 100 to 105 degree range will once again be possible outside of the thunderstorms. && .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM FRIDAY/... Scattered thunderstorms will likely continue into this evening before tapering off as we start to lose the diurnal component heading into the overnight hours. It will be warm and muggy tonight with lows in the low to mid 70s. The mid level ridge will begin to flatten out a bit through Friday with heights not quite as high as the past couple of days. As a result, temperatures will be a tad lower with afternoon highs in the upper 80s to lower 90s. Still though, the heat and humidity will lead to afternoon heat indices in the upper 90s to lower 100s, and will maintain the current Heat Advisory through 8 PM Friday. Meanwhile, afternoon instability will once again lead to scattered thunderstorm activity through the afternoon and into early Friday evening. && .LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/... The mid level ridge will slowly flatten out through the weekend with a quasi-zonal flow pattern setting up across the Great Lakes region. This will result in temperatures not being quite as warm with daytime highs mostly in the upper 80s to around 90 degrees through Monday. The combination of afternoon instability and the potential for some weak mid level energy moving through the flow will lead to continued chances for showers and thunderstorms each day. A mid level trough will eventually develop over the Great Lakes region heading into mid week. This will lead to a return to drier and more seasonable temperatures, with daytime highs mostly in the mid 80s. && .AVIATION /10Z THURSDAY THROUGH MONDAY/...
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Scattered showers and thunderstorms are expected this afternoon into early evening as the airmass destabilizes through the day. Will cover this with a prob30 for -TSRA at all of the TAF sites. This activity will dissipate as we head into this evening, leaving mostly clear skies overnight. With light winds, some patchy fog will be possible late tonight into early Friday morning. This could lead to some MVFR vsby restrictions toward daybreak, especially at KLUK. OUTLOOK...Thunderstorms are possible each day Friday through Monday, mainly in the afternoon and evening.
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&& .ILN WATCHES/WARNINGS/ADVISORIES... OH...Heat Advisory until 8 PM EDT Friday for OHZ026-034-035-042>046- 051>056-060>065-070>074-077>082-088. KY...Heat Advisory until 8 PM EDT Friday for KYZ089>100. IN...Heat Advisory until 8 PM EDT Friday for INZ050-058-059-066-073>075- 080. && $$ SYNOPSIS...JGL NEAR TERM...JGL SHORT TERM...JGL LONG TERM...JGL AVIATION...JGL