FXUS61 KILN 091048
AFDILN

Area Forecast Discussion
National Weather Service Wilmington OH
648 AM EDT Thu Jul 9 2026

.WHAT HAS CHANGED...
Timing of heavy rain potential is coming into somewhat better focus.
Also, added mention of drying out and warming up next week.

&&

.KEY MESSAGES...
1) Showers and thunderstorms early this morning and then again late
tonight. Locally heavy rainfall is possible south of I-70.

2) A low pressure system will track across the Ohio Valley Saturday 
into Saturday night bringing more potential for heavy rainfall. 

3) Drier and warmer conditions for next week.

&&

.DISCUSSION...
KEY MESSAGE 1)

Showers and a few lingering thunderstorms are moving out of the area.
It appears that this has enhanced a weak mid level disturbance. In
the wake of this, there is some question whether any additional
activity will be able to develop as a subtle short wave tracks across
central and eastern Kentucky today. But there is some new development
near Louisville that suggests that at least scattered activity may
move across southern counties later this morning into the early
afternoon. 

Attention then shifts westward. A convective system will come rolling
out of Illinois this evening and approach the region, most likely
after midnight, in a weakening state. There is a range of
possibilities on how this impacts the region. The HREF and REFS both 
want to drive more robust convection southeast, thus missing the 
forecast area to the south. This would mean that showers and perhaps
some embedded thunderstorms would be all that moves into the region 
late tonight. Precipitable water will rebound, especially south of 
I-70 where it may range from 1.8 to 2 inches. Thus if any stronger
echoes track into the region, there will be a continued concern for
locally heavy rainfall.

KEY MESSAGE 2)

Short wave over the mid Mississippi Valley early Saturday will slowly
push east southeast through the day and into Saturday night.
Associated surface low will track from western Illinois across
southern Indiana into central Kentucky. Showers and storms will occur
with and in advance of the low with a more focused axis in the
vicinity of a weak warm front/surface trough extending out ahead of
the low. Precipitable water will be decreasing from north to south
during this period. But heavy rainfall may still occur since more 
concentrated/robust activity is possible, and that may still be 
tapping into the northern gradient of the departing very moist air 
mass. This threat will be limited to southeast Indiana, northern
Kentucky and Ohio counties near the Ohio River. 

KEY MESSAGE 3)
Large mid level high pressure system that will be developing over the
northern/central Plains will eventually extend eastward into the
region. This will result in dry weather for early to mid week. In
addition, temperatures will trend upwards with readings eventually
getting into the upper 80s to lower 90s. At this point, the
probability of heat indices even approaching advisory levels is very
low, less than 20 percent.

&&

.AVIATION /12Z THURSDAY THROUGH MONDAY/...
Generally VFR conditions across the region with varying amounts of
clouds in the 4-7kft range. A decaying area of showers and
thunderstorms may move into the region after 06Z, but there is still
a fair amount of uncertainty whether that will occur. So have just
included PROB30 for this potential. MVFR ceilings may develop into
the Cincinnati terminals late in the period, although confidence in
that occurring is on the low side. Winds will veer to the west
southwest and increase to around 10 kt today. Winds will weaken after
00Z and become southerly again.

OUTLOOK...Thunderstorms are possible late tonight through Saturday 
night. MVFR ceilings are possible Friday morning. MVFR to IFR 
ceilings and visibilities possible late Friday night into Saturday 
morning.

&&

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

&&

$$

DISCUSSION...35
AVIATION...35