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787
FXUS61 KILN 290149
AFDILN

Area Forecast Discussion
National Weather Service Wilmington OH
949 PM EDT Sat Jun 28 2025

.SYNOPSIS...
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More afternoon and evening showers and storms on tap for Sunday.
Warm and humid conditions will early this upcoming week. A slightly
stronger cold front will bring more numerous storms on Monday, before
temperatures return to near or just slightly above normal by
midweek. Drier conditions are expected by Tuesday through midweek as
well.
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&&

.NEAR TERM /UNTIL 6 AM SUNDAY MORNING/...
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Remnants of earlier convection continues to wane and should be over
before midnight. Clouds will diminish as well, especially across the
northern part of the area. A weak boundary remains draped across the
northern Miami Valley to north of Delaware. Expect some fog to
develop overnight and while that could occur just about anywhere in
the area, it appears more favorable near and just south of that
boundary.
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&&

.SHORT TERM /6 AM SUNDAY MORNING THROUGH SUNDAY NIGHT/...
The rinse-and-repeat pattern continues on Sunday amidst very weak
LL/deep-layer flow. The main focus that will ultimately drive the
development of more scattered diurnally-enhanced activity is going to
be the approach of a weak/subtle MCV by late in the day into srn IN.
This will provide a localized enhancement to the LL
flow/convergence along an arc stretching from SW IN through southern
OH, providing just enough lift to initiate more afternoon/evening
convection, initially in/near the Tri-State. The thermo environment
will remain very supportive of downburst gusty to isolated damaging
winds, with DCAPE values expected to be >=1000 J/kg. Additionally,
the steering-layer flow should be even weaker on Sunday, lending
itself to very slow and chaotic storm motions/evolutions, suggesting
the heavy rain/isolated flooding threat will be more pronounced
Sunday than will be the case today, particularly in SW parts of the
area during the afternoon. This is mainly due to the slow and erratic
storms, which may sit/back build over a single location, lengthening
the potential time of torrential downpours. Will add mention in the
HWO to account for this potential.

Warm and muggy conditions continue Sunday night with an ISO
SHRA/TSRA continuing through the night, particularly near/W of I-75.

&&

.LONG TERM /MONDAY THROUGH SATURDAY/...
A cold front will approach the Ohio Valley from the northwest on
Monday. Ahead of the front, southwesterly flow increases leading to
PWATs of 2+ inches by the afternoon. This extremely moist
environment is likely to support shower and thunderstorm activity as
forcing and instability build ahead of the front into the evening.
The severe threat appears to be fairly low since shear is weak and
DCAPE will not be very supportive of strong microbursts. However,
torrential rain rates are likely in any storms. An isolated flash
flood risk exists since repeated rounds of storms are possible.

Shower and storm chances will persist into Monday night and possibly
into the early part of Tuesday until frontal passage occurs. Behind
the front, drier and slightly cooler air works into the Ohio Valley.
High pressure will bring dry weather and near average conditions
through at least Thursday night. By the end of the week, the surface
high drifts east which allows increasing southerly flow to bring
chances for rain back into the forecast.

&&

.AVIATION /02Z SUNDAY THROUGH THURSDAY/...
Still some convection around the area to start the period but that
will wane early. Expect visibility restrictions in fog to develop
overnight. Periods of IFR will be possible with the greatest
potential for that from KDAY to KILN. Visibilities will improve by
13Z. Cumulus will develop during the day with scattered showers and
thunderstorms expected again during the latter part of the period.

OUTLOOK...Thunderstorms are possible through Monday, focused in the
afternoon and early evening.

&&

.ILN WATCHES/WARNINGS/ADVISORIES...
OH...None.
KY...None.
IN...None.

&&

$$

SYNOPSIS...KC
NEAR TERM...
SHORT TERM...KC
LONG TERM...Campbell
AVIATION...