Indianapolis receives around 1,070 mm (about 42 inches) of rain a year, fairly evenly spread across the seasons, with spring bringing the most active severe thunderstorm season as the city sits within the wider Midwest’s tornado-prone corridor. These spring and early-summer storms can produce large hail, damaging straight-line wind, and locally intense rainfall capable of flash flooding within an hour, a routine seasonal hazard for the flat central Indiana landscape. The White River running through the city has a more gradual, less dramatic flood pattern compared with the faster local storms. Because severe weather here can develop quickly, radar tracking is a genuinely essential spring and summer tool. NWS Doppler radar KIND (Indianapolis) covers the region.
Learn more: How Does Rain Radar Work? · Open the full Rain Map