Indianapolis, Indiana – Drivers across central Indiana could encounter water-covered lanes and slowed traffic within the next 24 hours as repeated rounds of moderate to heavy rain move into the region, raising the risk of localized flooding along major interstates through Thursday night.
According to the National Weather Service in Indianapolis, steady rain will continue for several days, with periods of heavier downpours Tuesday through Thursday. Rainfall totals may reach 2 to 4 inches in some locations, especially across Marion County and surrounding areas. Forecasters warn that saturated ground will increase runoff, making urban and poor-drainage flooding more likely.
Interstate 65, Interstate 70 and the Interstate 465 beltway are particularly vulnerable during heavier bursts, especially near low-lying ramps and construction zones. Roads such as US-31, Keystone Avenue and sections of I-69 on the northeast side could see standing water during peak travel times. Commuters heading into downtown Indianapolis should allow extra time and avoid driving through flooded underpasses.
Temperatures will gradually warm after cooler conditions early in the week, which may enhance rainfall rates at times. While widespread river flooding is not currently expected, small creeks and storm drains could quickly overflow during intense rainfall.
Residents should clear storm drains near their homes, secure sump pumps and charge electronic devices in case isolated power outages develop. Motorists should slow down during heavy rain and remember that just a few inches of water can stall a vehicle.
Rain is expected to persist through Thursday night, and additional advisories may be issued if rainfall totals trend higher across central Indiana.
