FXUS61 KILN 020157 AFDILN Area Forecast Discussion National Weather Service Wilmington OH 957 PM EDT Tue Jul 1 2025 .SYNOPSIS... High pressure moves into the region and the area dries out. Temperatures return to near normals and humidity values will decrease through the rest of the working week. A warming trend arrives by the weekend, with a return of muggy conditions. && .NEAR TERM /THROUGH WEDNESDAY/... 10PM Update... Cold front continues to slowly work its way through our CWA. A few isolated showers exist near the boundary. Thunder coverage is decreasing as instability wanes with the loss of diurnal heating, but a stray lightning strike is possible with these showers. Previous discussion ---> Ridging and surface high pressure move into the Ohio Valley region through the overnight hours. Mass subsidence will allow for clearing skies and light winds. Given the recent rainfall and antecedent moist soil conditions, we are seeing a signal for fog during the overnight into early morning hours on Tuesday. Strongest signal is in central/eastern Ohio and northern Kentucky into the Appalachian region. However, wouldn't be surprised to see patchy fog elsewhere, especially near areas with ample foliage/grass. Clear skies combined with CAA will drop overnight temperatures to the mid/low 60s. && .SHORT TERM /WEDNESDAY NIGHT/... Clear skies start the day on Wednesday but cu will build in throughout the afternoon hours. High pressure remains in control and dry conditions continue- afternoon dew points in the low to mid 60s with daytime high temperatures reaching the mid 80s. Overnight, we remain quiet and dry. Lows fall to the mid 60s. && .LONG TERM /THURSDAY THROUGH TUESDAY/... While ridging centered in the central CONUS dominates the region beginning Thursday, portions of Ohio are more dominated by NW flow, so some chances for scattered showers/isolated thunderstorms generally along/north of I-70 Thursday and Friday afternoons in diurnal instability. But with the ridge building in, the region will trend overall toward a drier pattern, but with increasing temperatures. Thursday starts off with mid/upper 80s, with increasing temperatures each day getting into the low to mid 90s by the weekend. There's some uncertainty with whether or not surface dewpoints will bring heat index values into the upper 90s, as well as potential cloud cover increase by especially Sunday. Nonetheless, HI values could approach mid/upper 90s Saturday/Sunday, depending upon strength of the ridge and cloud cover with approaching shortwave especially on Sunday. As the ridge shifts off to the SE CONUS by Monday, some differences in solutions on the breakdown itself and the potential strength and timing of a trough through the central/lower Great Lakes. Storm chances increase late Sunday and especially into Monday/Tuesday, with temperatures settling into more seasonal values in the mid- upper 80s. && .AVIATION /02Z WEDNESDAY THROUGH SUNDAY/... Cold front continues to slowly push through the terminals this evening. An isolated shower could move across any of the terminals still (KDAY less likely given the front has passed them), but the threat remains isolated enough to not warrant a mention in the TAF. Skies become mostly clear tonight, which will result in fog development. Hardest hit location will be KLUK, but most terminals may observe MVFR reductions at a minimum. VFR cu development possible Wednesday afternoon. Winds remain light out of the northwest through the taf period. OUTLOOK...No significant weather is expected at this time. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...None. KY...None. IN...None. && $$ SYNOPSIS...CA NEAR TERM...Clark/CA SHORT TERM...CA LONG TERM...JDR AVIATION...Clark