127
FXUS63 KIND 291856
AFDIND

Area Forecast Discussion
National Weather Service Indianapolis IN
256 PM EDT Fri Aug 29 2025

.KEY MESSAGES...

- Dry and quiet weather for the weekend into early next week

- Next chance for rain arrives Tuesday and continues into Thursday
  with another shot of cooler air behind a front

&&

.SHORT TERM (This evening through Saturday)...
Issued at 256 PM EDT Fri Aug 29 2025

Surface high pressure will be in control throughout the short term,
leading to generally quiet and dry weather.

However, a weak upper wave sliding through the broader scale
cyclonic flow aloft overnight will likely lead to a bit of an
increase in mid and high cloud, which may prevent ideal radiational
cooling conditions - though cooling conditions will still be pretty
good with fairly low dewpoints, dry ground, and dry
northerly/northeasterly flow. Will go a bit below guidance in the
upper 40s to mid 50s tonight.

Some patchy fog cannot be ruled out near daybreak Saturday,
primarily in areas where skies remain a bit clearer, or those that
are sheltered or climatologically favorable, such as stream valleys,
but confidence is far too low for a mention in the grids, especially
given that dense fog is not particularly likely.

Pleasant weather will continue Saturday, with highs rising into the
mid 70s to around 80 across the area with continued low humidity and
plentiful sunshine.

&&

.LONG TERM (Saturday night through Friday)...
Issued at 256 PM EDT Fri Aug 29 2025

Saturday night through Monday...

High pressure at the surface will keep the weather quiet across
central Indiana through the Labor Day weekend. Temperatures will
moderate a bit, but highs will be near to a little below normal. Dry
air and low cloud cover will allow temperatures to fall into the 50s
for lows.

Tuesday through Thursday...

An inverted surface trough will drift into the area for Tuesday into
early Wednesday, bringing a return of chances for rain. The trough
will bring some moisture with it, but forcing and moisture aren`t
impressive. Will keep PoPs in the chance category with the inverted
trough.

Later Wednesday into Thursday, a stronger upper trough will move
southeast from Canada, with an accompanying surface cold front with a
good shot of cool Canadian air behind it. There remain some
questions on timing of the system, which will affect the timing of
the highest PoPs. Right now it looks like later during the day
Wednesday into Wednesday night.

Temperatures will go from near normal on Tuesday to well below
normal for Thursday, with highs on Thursday only in the 60s expected.

Friday...

High pressure should nudge into the area on Friday, bringing a
return to dry weather. Temperatures in the 40s Friday morning should
return to around 70 in the afternoon.

&&

.AVIATION (18Z TAF Issuance)...
Issued at 120 PM EDT Fri Aug 29 2025

Impacts:

- Patchy fog possible late tonight

Discussion:

VFR conditions are forecast throughout the TAF period.

High pressure will be in control throughout the period, though a
weak passing upper wave will increase sky cover a bit tonight into
Saturday.

Some patchy shallow fog is possible near daybreak Saturday, but is
too low confidence for mention at this time given the sky cover
expectation. If it does occur, it will be brief and likely no worse
than MVFR.

Winds will be below 10KT through the period, mostly northerly early,
becoming easterly on Saturday, though periods of variable winds are
likely as well.

&&

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

&&

$$

SHORT TERM...Nield
LONG TERM...50
AVIATION...Nield