


Area Forecast Discussion
Issued by NWS Wilmington, OH
Issued by NWS Wilmington, OH
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122 FXUS61 KILN 022258 AFDILN Area Forecast Discussion National Weather Service Wilmington OH 658 PM EDT Wed Jul 2 2025 .SYNOPSIS... High pressure remains in control through the end of the work week with mostly dry conditions. Seasonal temperatures begin to trend warmer as we head toward the weekend. The next weather maker arrives to the region near the end of the weekend into the upcoming work week. && .NEAR TERM /UNTIL 6 AM THURSDAY MORNING/... A broad area of surface high pressure and upper level riding continue to move through the Mid-Atlantic region. Mass subsidence results in mostly clear to partly cloudy skies overnight. The strongest CAA has now moved off to th east, so overnight lows don`t quite fall as low as last night but still make it down to the mid 60s, which is around seasonal normals. Not expecting widespread fog development however, cannot rule out some river valley fog where moisture sources are abundant. && .SHORT TERM /6 AM THURSDAY MORNING THROUGH THURSDAY NIGHT/... High pressure will be squarely over the forecast area on Thursday and most locations will remain dry throughout the entire day with some diurnal cumulus. Highs rise to the mid/upper 80s with feels like temps in the same realm. Far to our north, near the Hudson Bay, a low pressure system will be swinging by. Its trailing cold front will swing down through the northern Great Lakes and may provide just enough forcing for a passing afternoon shower/storm for our counties north of I-70, particularly near the Columbus area. Overnight into Independence Day should be quiet, with calm winds and mostly clear skies. Overnight lows are a tad warmer, since the high will be shifting east and weak southerly flow will begin to return; temps fall to the mid/upper 60s. && .LONG TERM /FRIDAY THROUGH WEDNESDAY/... Most of the area should remain dry on Friday, but some uncertainty with the potential for position and strength of the region sitting between the departing trough over the NE U.S. and the building ridge from the central U.S. Right now, a very low end chance of Friday afternoon isolated convection working into the periphery of the ridge in areas generally along/north of I-70. Will continue to monitor and future forecast may be adjusted once CAMs come into play, but for now chance of precip remains below 15 percent in this area, with higher confidence for a dry 4th in areas further south. Highs generally in the upper 80s/low 90s. Saturday becomes the day most dominated by ridging/surface high pressure, and with it comes increasing temperatures in the low to even mid 90s. With increased southerly flow and higher dewpoints, HI values approach the upper 90s. Overall temperatures on Sunday will be similar to Saturday as ridging still somewhat dominant, but increasing clouds and a chance for showers/storms nudging into the NW third of the forecast area from just north of Columbus, through Dayton and down to near Brookville IN. While HI values again approach the upper 90s in the south, with the increasing clouds, still overall expecting HI values to stay below 100, but some areas could hit that mark near/south of the Ohio River on Sunday. Beginning Sunday night, the pattern shifts from ridge dominant to more zonal, with increasing chances of showers/storms. Still some model member differences on how quickly the ridge breaks down and allows progression of shortwave/instability to push into the forecast area. The ridge shifts to the southeast, which depending on positioning and strength, could set the region up in a pattern of multi-day convection through the Ohio Valley and lower Great Lakes, while the upper ridge settles off the southeast coast. This will generally bring a high chance for showers/storms each day Mon-Wed, and allow for moderating temperatures settling into the mid-upper 80s for highs for Tue/Wed with mid to upper 60s for lows. && .AVIATION /00Z THURSDAY THROUGH MONDAY/... High pressure will generally be the dominant weather feature over the TAF period. Patchy fog is possible near prone river valleys early Thursday morning. However, based on persistence from early this morning, have limited the fog to MVFR at LUK. Otherwise, the tail end of a passing disturbance could spark a few showers across central Ohio Thursday afternoon. Based on the latest CAMs, will not mention at CMH/LCK due to low confidence amongst HREF members at this time. OUTLOOK...Thunderstorms are possible Sunday into Monday. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...None. KY...None. IN...None. && $$ SYNOPSIS...CA NEAR TERM...CA SHORT TERM...CA LONG TERM...JDR AVIATION...