ILN issues Area Forecast Discussion (AFD) at Sep 28, 12:33 PM EDT420
FXUS61 KILN 281633
AFDILN
Area Forecast Discussion
National Weather Service Wilmington OH
1233 PM EDT Sun Sep 28 2025
.SYNOPSIS...
High pressure will lead to dry and mild conditions through the
week.
&&
.NEAR TERM /THROUGH TONIGHT/...
Surface high pressure centered over the lower Great Lakes will extend
back into the mid Mississippi Valley through tonight. This will lead
to another clear night with lows in the mid 50s to around 60
degrees. With clear skies and light winds, some river valley fog can
be expected again later tonight.
&&
.SHORT TERM /MONDAY THROUGH MONDAY NIGHT/...
The surface high will shift slowly off to the northeast Monday into
Monday night but with the dry airmass still in place, mostly
sunny/clear conditions will prevail. We will remain seasonably warm
with highs on Monday in the mid 80s and lows Monday night in the mid
50s to lower 60s.
&&
.LONG TERM /TUESDAY THROUGH SUNDAY/...
On Tuesday morning, surface high pressure and upper ridging will
extend across much of the upper Mississippi Valley, Great Lakes,
northern Ohio Valley, and parts of the northeastern CONUS.
Although this ridge and surface high are expected to modulate
somewhat, with the surface high eventually becoming most strongly
established over the northeastern CONUS, these features will remain
the dominant weather features for the ILN CWA through the extended
forecast period.
On Tuesday, lower pressures and lower heights over the southeastern
CONUS (partially associated with TD9) will extend into parts of the
central Appalachians. Although precipitation is still expected to
remain out of the ILN forecast area, there may be some increase in
cloud cover, particularly for the southeastern sections of the CWA.
A general downward trend in temperatures is expected through the
rest of the week. The cool and dry area of high pressure will lead
to easterly / northeasterly flow, with negative theta-e advection.
Max temps on Wednesday are expected to be in the lower 80s (above
normal) before moving into the mid 70s by Thursday and Friday, and
likely into the weekend (close to normal). This dry air mass will
likely keep skies mostly clear through the forecast period, with
little if any chances for rain. The forecast through the end of the
week will thus remain dry.
&&
.AVIATION /16Z SUNDAY THROUGH THURSDAY/...
Surface high pressure and a dry airmass will be in place across the
region through the TAF period. Clear skies and light winds will lead
to some river valley fog again tonight. With a favorable light
easterly gradient, expect KLUK to drop into IFR to VLIFR category
later tonight into early Monday.
OUTLOOK...No significant weather expected.
&&
.ILN WATCHES/WARNINGS/ADVISORIES...
OH...None.
KY...None.
IN...None.
&&
$$
SYNOPSIS...JGL
NEAR TERM...JGL
SHORT TERM...JGL
LONG TERM...Hatzos
AVIATION...JGL
Source:
ILN issues Area Forecast Discussion (AFD) at Sep 28, 12:33 PM EDT---------------
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