textproduct: Indianapolis

KEY MESSAGES

- Remaining cloudy and cool with patchy drizzle in spots this afternoon. - Temperatures will trend from slightly below normal to near normal through Saturday.

- There are periodic chances for showers and storms late Wednesday through Saturday.

- Potential for above normal temperatures (hot and humid conditions) by early next week.

DISCUSSION (This afternoon through Monday)

Issued at 152 PM EDT Mon Jun 22 2026

This Afternoon through Tuesday...

Low clouds and patchy drizzle linger through at least the mid afternoon hours today near a lingering 925-850 mb trough axis. This feature shifts off to the southeast by early this evening with clouds scattering out as drier air advects in from northwest to southeast. Ridging through the column then provides the area with pleasant wx into Tuesday with ample sunshine and temperatures slightly below seasonal norms.

Wednesday into Thursday...

A shortwave tracking east into the Great Lakes will drag a cold front slowly southeast through the area late Wednesday into Thursday with chances for showers and a few storms. More pronounced forcing likely bypasses north and overall moisture return is not all that impressive. Thus, have held PoPs mainly in the low to mid chance range during these periods. Temperatures and humidity levels will remain slightly below seasonal averages otherwise.

Friday through Monday...

Thursday's front will stall out in the vicinity of the Ohio River by Friday and Saturday with several convectively aided shortwaves tracking through in quasi-zonal flow. The result will be periodic rain/storm chances during these days, though confidence remains low as any convective complexes will modulate where the instability axis will set up for convection to organize. Ensemble and deterministic model solutions then continue to point toward a hotter/muggy pattern Sunday into early next week as upper level ridging expands northward into the Ohio Valley and Great Lakes.

AVIATION (18Z TAF Issuance)

Issued at 1237 PM EDT Mon Jun 22 2026

Impacts:

- Gusty north winds to around 20 kts this afternoon

- Patchy drizzle possible early this afternoon at KIND and KBMG

- IFR/MVFR ceilings this afternoon will give way to VFR conditions and light northerly winds tonight into Tuesday.

Discussion:

Greater diurnal mixing, and gradual infiltration of drier air in this post-frontal air mass, will allow IFR to low MVFR ceilings to gradually improve this afternoon, with scattering to VFR anticipated toward 00z. VFR with light northerly winds thereafter into tonight and Tuesday.

IND WATCHES/WARNINGS/ADVISORIES

None.