textproduct: Indianapolis

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 (18Z TAF Issuance)

Issued at 1225 PM EST Sun Nov 1 2026

Impacts:

- Occasional light rain and drizzle this evening and tonight

- Cigs dropping to MVFR tonight and towards IFR Monday morning

Discussion:

Cloudy skies expected through the TAF period with cigs gradually falling to MVFR after 06Z and eventually IFR towards daybreak. These IFR conditions should persist through the early afternoon before lifting back to MVFR. Light rain coverage will be low through the late afternoon before another round of sporadic rain arrives for the late evening hours. Drizzle will be possible at times late tonight into early Monday but confidence on coverage and impacts is low. Winds will remain generally easterly to northeasterly at 5-10 kt through the TAF period.

IND WATCHES/WARNINGS/ADVISORIES

None.