175
FXUS63 KIND 011445
AFDIND

Area Forecast Discussion
National Weather Service Indianapolis IN
945 AM EST Sun Nov 1 2026

.KEY MESSAGES...

- Light showers or drizzle possible at times through early Monday

- Mild through mid week, with Tuesday the warmest day with highs in
  the mid 70s.

- Active weather with thunderstorms and heavy rain possible Tuesday
  night into Wednesday

- Cooler but still near seasonal normals late week into the weekend

&&

.FORECAST UPDATE...
Issued at 945 AM EST Sun Nov 1 2026

No major changes needed to the ongoing forecast with conditions
generally evolving as expected. ACARs soundings near IND continue to
show dry air below 700mb which has limited the ability of the
showers to reach the ground for most of the area. A few spots have
seen scattered sprinkles and light showers, but that has generally
been limited in both spatial coverage and frequency.

There will be some additional saturation closer to 850mb by later
this evening but near surface saturation isn`t expected until the
overnight hours. Thus, expect to see continued sprinkles here and
there with greatest coverage towards the southwestern counties.

&&

.DISCUSSION (Today through Saturday)...
Issued at 115 AM EST Sun Nov 1 2026

Guidance continues to depict a milder and somewhat more active
pattern, particularly during the middle of the coming week.

A broad and disorganized upper level wave will continue to bring
widespread cloud cover to the area at least through tonight, and
perhaps into Monday as well, though Monday will likely see more of
transition back to high cloud ahead of the larger and much more
intense system set to impact the area mid week.

PoPs will be kept to the slight chance or low chance categories
through early Monday as moisture will be somewhat disjointed, with
substantial low level dry air being gradually saturated from aloft,
and the airmass aloft drying as this occurs. This may produce weak
showers or even drizzle as the lower level moisture shallows out
tonight into early Monday, but in any case, any measurable amounts
that occur will be extremely light, with the primary impact of the
system being the cloud cover limiting diurnal temperature ranges.

Focus then shifts to the mid week, system, featuring a complex
series of upper level closed lows and a fairly potent surface
cyclone - highly amplified upper level jet structure will lead to a
slow moving system, which will likely provide a break of dry
conditions at least through midday Tuesday if not longer. PoPs will
be highest with frontal passage Tuesday night into Wednesday, as
strongly boundary parallel flow is likely to confine much of the
precipitation to the immediate vicinity of the front.

Fairly strong shear will accompany the front, which may produce some
embedded thunderstorms, and perhaps a low chance for a shear
dominant strong storm or two in a high shear/low CAPE scenario,
though at the moment forecast profiles show poor lapse rates and
very minimal instability.

Low shower chances may linger into the late week and perhaps
portions of the weekend depending upon how the aforementioned
complex upper level pattern plays out, which current guidance is
very inconsistent with.

Temperatures will be mild but fairly solidly above normal early in
the week, with the cold front bringing them down, but still around
seasonal normals, which for the Indy area are roughly 40 and 60
degrees for lows and highs respectively.

&&

.AVIATION (12Z TAF Issuance)...
Issued at 611 AM EST Sun Nov 1 2026

Impacts:

- Showers possible at all sites, especially BMG

- MVFR or worse conditions possible late tonight

Discussion:

An upper level wave moving through the area is producing widely
scattered light showers, and will carry this in some form at all
sites today. Ceilings will gradually lower as a dry low level
airmass saturates from above, but remain VFR through the day with
the possible exception of brief drops to MVFR in precip.

Deterioration to MVFR or worse ceilings, perhaps with some
visibility restriction as well, will be possible late tonight,
generally in the 04-07Z time frame, with ceilings falling at least
to low end MVFR and possibly into the IFR range.

Winds will generally be between 090 and 150 degrees during the
period, less than 10KT.


&&

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

$$

UPDATE...White
AVIATION...Nield
DISCUSSION...Nield