389
FXUS61 KILN 290542
AFDILN

Area Forecast Discussion
National Weather Service Wilmington OH
142 AM EDT Tue Sep 29 2026

.WHAT HAS CHANGED...
No significant changes.

&&

.KEY MESSAGES...
1) A gradual warming trend is expected this week, with rain chances
returning late in the work week.

&&

.DISCUSSION...
Key Message 1)
Surface high pressure will remain centered over the ILN fa today.
While some drier air is still hanging around, dewpoints have ticked
up slightly higher compared to the previous days. Given this trend,
combined with the mostly clear skies/calm winds with the surface
high, some patchy dense fog may develop tonight, even outside of the
river valleys. Areas that will be most prone include portions of
central and southeast Ohio into northern Kentucky for overland fog.
Will continue to monitor obs this morning to determine if any
products are needed for the fog.

Temperatures will begin to trend warmer today as return flow develops
across the Ohio Valley. Some locations near the Ohio River could hit
the 80 degree mark today. This will denote the beginning of a
warming trend that continues into Thursday, with Thursday likely
being the warmest day of the week. This is a result of the H5 ridge
being slightly more amplified, which is ushering in warmer air but
also keeping the stream of moisture and associated precip just NW of
our CWA. The ridge dampens on Friday and is replaced by a trough
ejecting through the region, resulting in likely PoPs for our entire
fa. However, thunder chances appear to be more limited with this
round of precip.

Rain chances will continue on Saturday and perhaps even into Sunday,
but will continue to see decreasing chances from north to south as
we progress through the weekend.

&&

.AVIATION /06Z TUESDAY THROUGH SATURDAY/...
Continue to include vsby reductions due to fog development overnight
as the center of high pressure sits right overhead. Outside of valley
fog impacts at KLUK, the best chances for vsby reductions remain
across our eastern terminals, with lower confidence at KDAY/KCVG.

Once the fog burns off after daybreak, VFR conditions are forecast to
persist the rest of the taf period. Winds will be nearly calm and
variable as the high shifts to our east. Eventually, surface winds
will be more sustained out of the SE.

OUTLOOK...MVFR/IFR conditions are possible Thursday night into
Friday.

&&

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

&&

$$

DISCUSSION...Clark
AVIATION...Clark