424
FXUS63 KIND 220703
AFDIND

Area Forecast Discussion
National Weather Service Indianapolis IN
303 AM EDT Sat Aug 22 2026

.KEY MESSAGES...

- Isolated/scattered showers and a few t-storms are possible early
  this morning with isolated convection possible again late today

- Cooler and less humid weather expected Sunday through Tuesday with
  highs mainly in the 70s to low 80s.

- Areas of late night/early morning fog will occur Saturday and
  Sunday nights.

- Dry weather expected Monday and Tuesday with increasing chances
  for rain and storms mid-late next week.

&&

.DISCUSSION (Today through Friday)...
Issued at 302 AM EDT Sat Aug 22 2026

Today through Sunday...

Expect multiple embedded waves within upper troughing to move
through the region this weekend while northwest flow persists.
Current KIND radar imagery depicts scatters showers and a few storms
pushing into central Indiana early this morning. This convection is
associated with an MCS which has been gradually weakening through
the overnight as it is outpacing the more unstable environment back
across IL. Additional showers and a few storms are possible through
the morning with the disturbance pushing through, but weak forcing
will limit coverage.

Look for winds to turn northwesterly by mid-morning once a cold
front passes. Drier air filtering in should promote mostly dry
conditions later today into tonight. However, a subtle backdoor
front and marginal low-level moisture could support a few showers or
a stray storm, mainly across far northwestern counties. Light winds
combined with mostly clear skies Saturday night supports the
potential for patchy fog. Any fog that develops will quickly mix out
Sunday morning. Another subtle impulse could promote a few light
showers over far NE counties Sunday afternoon. Otherwise, look for
pleasant weather with cooler weather from persistent northwest flow.
Highs on Saturday are expected to range from the upper 70s to low
80s whiles highs on Sunday generally range from the mid 70s to low
80s.

Sunday night through Tuesday...

Broad area of surface high pressure will push SE into the Ohio
Valley through the period, providing for much drier conditions, with
dewpts falling into the 50s. As a result most areas will see low
temperatures in the 50s Sunday night. Light winds and mostly clear
skies will lead to another night with areas of fog Sunday night. A
weak system in the NW flow aloft is expected to move across the
MO/mid-MS valleys Monday into Tuesday. At present the only expected
effect from this system will be increasing mid-high clouds. This
should limit fog chances Monday night and keep high temperatures in
the 70s most areas Monday and Tuesday.

Wednesday through Friday...

Another upper wave/surface cold front will move through during the
period. Confidence in timing is very low considering the system is
currently off the west coast, so for now will only have some low
PoPs. Seasonable temperatures are expected with increasing humidity
with increasing SW flow in the low levels.

&&

.AVIATION (06Z TAF Issuance)...
Issued at 106 AM EDT Sat Aug 22 2026

Impacts:

- Isolated/scattered -SHRA/TSRA possible through 13-15Z
- Low chance for brief fog at outlying sites this morning
- WNW winds gusting up to 20-25KT Saturday afternoon/late day

Discussion:

Scattered convection and isolated thunder will be possible through
13-15Z as a disturbance moves across the region. Low confidence on
MVFR from convection...with also a brief window of potential MVFR
from fog at terminals outside of KIND, towards dawn. It does appear
increasingly likely brief MVFR ceilings are possible at KLAF between
12-16Z so added a TEMPO group.

Overall light/variable flow tonight will yield to stronger post-
frontal flow Saturday midday-afternoon, with winds veering slightly
within 270-320 degrees, occasionally gusting up to 20-25KT through
late afternoon. Morning cloud cover could limit diurnal mixing and
peak gusts slightly.


&&

.IND WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$

AVIATION...Melo
DISCUSSION...Crosbie/Melo