textproduct: Indianapolis

KEY MESSAGES

- Dry and pleasant weather expected today through next week.

- Near-average temperatures, highs near 80, lows in 50s/60s.

- The best chance for rain is next Saturday

DISCUSSION (This evening through Saturday)

Issued at 256 PM EDT Sat May 30 2026

Fairly quiet start to meteorological summer ahead as ridging dominants the weather pattern locally over the next week. There will be some subtle changes in the overall set up, but sensible weather at the surface should remain fairly consistent with mainly dry conditions and near normal temperatures.

An upper level omega blocking pattern is currently set up over the CONUS with a thin ridge axis from Winnipeg, Manitoba southward to the lower Mississippi Valley. Indiana remains just to the east of the ridge axis, which is acting as almost a wall keeping any convection well south and west of Central Indiana. Surface high pressure resides over Ontario for the next few days resulting in northeasterly flow keeping a drier airmass in place for this time of year and temperatures largely around average with highs in the 70s to near 80 and lows in the 50s to near 60.

Minor change to the overall pattern occurs on Monday as the omega block briefly breaks down and a northwesterly flow pattern aloft sets up over the Midwest and Great Lakes. At the same time, a backdoor shortwave pivots southwest into the Great Lakes from Canada. The NW-SE boundary which had been in place over the Plains, keeping storms away from Indiana, briefly shifts eastward under the NW flow pattern, potentially placing portions of Indiana in the track of a few waves and precipitation. High pressure at the surface will still be the dominant weather influence locally, so not expecting widespread rain or storms in the area; however mid range guidance has been consistent in showing the potential for convection Monday morning and afternoon near the boundary in the southwest quadrant of the state. Introducing low PoPs along and SW of a line from Terre Haute to Bedford Monday, while the rest of Central Indiana should remain fairly dry. Confidence is low on how the mesoscale features will evolve going into Monday as CAMs struggles on the smaller details this far out, so keeping PoPs under 30% for now. Dry air in place could keep any precipitation light as well. Will watch this threat over the next few days, but overall it should not amount to much.

For the rest of next week, upper ridging redevelops overhead while high pressure over Canada shifts southward into the southeast CONUS. This pattern supports continued dry conditions for Central Indiana with a warming trend by next weekend as flow becomes southwesterly. Expect highs to gradually warm into the mid 80s by the end of the week with lows in the mid 60s as humidity values gradually increase. Longer range guidance introduces the chance for rain and storms by Saturday the 6th as Gulf moisture streams northward along a boundary. Will be monitoring the storm threat next week and updating the forecast daily as confidence increase on the exact pattern evolution and associated threats to Central Indiana.

AVIATION (18Z TAF Issuance)

Issued at 142 PM EDT Sat May 30 2026

Impacts:

- None; VFR Conditions are expected.

Discussion:

No significant changes to the ongoing forecast.

Ridging aloft and surface high pressure over the Great Lakes will keep VFR conditions through the period. Satellite imagery shows high clouds above 20kft agl while ridging keeps any convective activity well to the south and west of Indiana. Afternoon mixing has allowed for gusts in the 15-18kt range this afternoon...expect gusts to follow a typical diurnal trend and diminish around sunset. A tighter pressure gradient overnight will keep winds elevated after sunset in the 8-12 kt range at all sites. No vis or cig concerns in the next several days.

IND WATCHES/WARNINGS/ADVISORIES

None.