ILN issues Area Forecast Discussion (AFD) at Oct 13, 7:52 PM EDT
247
FXUS61 KILN 132352
AFDILN
Area Forecast Discussion
National Weather Service Wilmington OH
752 PM EDT Tue Oct 13 2026
.WHAT HAS CHANGED...
No significant changes.
&&
.KEY MESSAGES...
1) An active weather pattern is expected from Wednesday through
Friday, which will bring the potential for strong storms, heavy
rainfall, and gusty winds.
2) Cooler weather and frost possible this weekend.
&&
.DISCUSSION...
Key Message 1)
A more active weather pattern will develop Wednesday and continue
into Friday. Mid level ridging currently in place across the region
will begin to break down tonight into Wednesday as some mid level
energy moves out of the mid Mississippi Valley and into the Ohio
Valley. This will allow for a weak frontal boundary to sag slowly
southeast into our area through the day on Wednesday. The boundary
will likely stall out somewhere along the Ohio River Wednesday night
before beginning to lift back to the north as a warm front through
the day on Thursday as a weak surface wave rides east along it.
Finally, a stronger mid level short wave will help carve out a sharp
upper level trough across the Great Lakes region Thursday night into
Friday, with an associated strong cold front moving southeast across
our area Friday morning into early afternoon.
Developing moisture advection ahead of the boundary on Wednesday will
lead to increasing PWs, climbing into the 2-2.25 inch range through
Wednesday afternoon and then remaining high along and south of the
boundary into Thursday. Given the increasing moisture and forcing,
expect widespread showers and embedded thunderstorms to develop
Wednesday afternoon and continue into Wednesday evening with some of
the precipitation likely lingering through the night south of the
boundary.
To the south of the boundary, temperatures will remain unseasonably
warm during the day on Wednesday with highs ranging from the upper
70s north to the mid 80s across our far south. This will allow for
some MLCapes of around 1000 J/KG or so, mainly to the south of the
I-70 corridor through Wednesday afternoon. With the strengthening mid
level flow, deep layer shear will increase through the day on
Wednesday, so a few strong to severe thunderstorms will be possible
Wednesday afternoon into the evening, with damaging wind the main
threat. The best chance for this will be across our southern areas,
but the overall severe threat will be contingent on how well we are
able to destabilize through the day.
Locally heavy rainfall will also be possible given the high PWs.
Initially, storms look to be somewhat progressive Wednesday
afternoon, but as the boundary begins to stall out, some training
storms may begin to develop, leading to some potential flooding
concerns heading into Wednesday night.
Chances for showers and storms will again be possible Thursday
afternoon into Thursday evening as the frontal boundary lifts back
to the north. Good deep layer shear will again be present so if we
are able to destabilize enough, some additional strong to severe
storms would be possible Thursday.
As the strong cold front moves southeast across the area, good low
level CAA will develop Friday morning into the afternoon. In the
southerly flow ahead of this, temperatures will remain mild Thursday
night before dropping during the day on Friday as the colder air
moves in. In addition, the strong CAA will support gusty winds to
around 40 mph or so during the day on Friday.
Key Message 2)
A much colder airmass will continue to settle into the area for the
weekend. Lows Friday night and Saturday night will be in the 30s with
the potential for some frost, especially Saturday night when winds
will be lighter.
&&
.AVIATION /00Z WEDNESDAY THROUGH SUNDAY/..
Mid level ridge centered over the southeast U.S. has built north
into the Ohio Valley. This offered record warm temperatures and VFR
conditions with only some mid level clouds and a few cumulus clouds.
Clouds continue to decrease this evening with mainly clear skies thru
the night. Some high level clouds will likely increase late. Winds
will likely stay up a bit but may go light enough in the river
valleys to support some patchy fog development late tonight into
early Wednesday. Therefore, have a mention of MVFR vsby restrictions
due fog at KLUK.
An upper level disturbance will move into the Ohio Valley during the
day Wednesday. Moisture increases ahead of an associated cold front
that slips south thru the TAF sites during the afternoon. An axis of
moderate instability will lead to the development of showers and
thunderstorms from late morning and into the afternoon. After the
frontal passage expect a period of MVFR ceilings - especially across
the southern TAF sites late in the day into the evening.
Southwest winds will decrease to less than 10 kts this evening and
then increase to around 10 kts Wednesday and shift to the northwest
during the afternoon.
OUTLOOK...Thunderstorms are possible again on Thursday. Occasional
MVFR conditions are possible from Wednesday through Friday. Gusty
winds likely on Friday.
&&
.ILN WATCHES/WARNINGS/ADVISORIES...
OH...None.
KY...None.
IN...None.
&&
$$
DISCUSSION...JGL
AVIATION...AR
Source: ILN issues Area Forecast Discussion (AFD) at Oct 13, 7:52 PM EDT (https://mesonet.agron.iastate.edu/p.php?pid=202610132352-KILN-FXUS61-AFDILN)
---------------
If I'm using your data in a way that is against your terms please email the team at "threatweb@pupswoof117.com"! I am a bot who will not respond in the comments at all and is only designed to post RSS feeds!