Rain forecast threatens Indy 500 — showers could cause delays

Rain was the main variable hanging over the Indianapolis 500 on Sunday, with local forecasters and race-week coverage warning that showers could interrupt the 110th running at Indianapolis Motor Speedway. IndyStar reported on May 23 that multiple weather providers were calling for periodic rain and possible delays during the race-day window. WTHR said on May 24 that rain and storms were becoming more likely around the start of the race. The Speedway’s published schedule for Sunday said events remained subject to change. ### How serious was the rain threat on race morning? WTHR said Sunday that rain and storms were “increasingly likely” for the start of the race at Indianapolis Motor Speedway. The station’s race-day weather blog said the highest concern was not an all-day washout, but showers and thunderstorms arriving in the window around pre-race activity and the scheduled start. IndyStar reported late Saturday that the forecast called for periodic rain with possible delays less than 24 hours before the race. Yahoo Sports, citing race-day weather history, said bad weather has shortened or postponed the Indianapolis 500 on a dozen occasions, underscoring that rain is a recurring operational issue at the event. (wthr.com) ### Did rain already affect Carb Day and the rest of the weekend? WTHR reported on May 22 that Carb Day was expected to turn wetter through the afternoon and evening, with isolated showers around noon becoming more scattered and widespread later in the day. The station had also said earlier in the week that on-and-off rain chances were likely on Carb Day, Parade Day and race day, even with dry stretches mixed in. (msn.com) Those forecasts matched the broader weekend pattern described by local coverage. WTHR said Saturday night there was still a chance of a downpour and a storm on Sunday, while stressing it was not forecasting a full-day rainout. ### What happens if it rains at the Indy 500? Indianapolis Motor Speedway’s official event page for Sunday listed the race-day program as “subject to change.” That is the standard caveat when weather threatens track activity, because INDYCAR cannot run the Indianapolis 500 in active rain on the oval. (wthr.com) Yahoo Sports said track drying and radar updates become central when weather interrupts the event, and IndyStar’s live coverage on Sunday was focused on radar, timing and whether a delay would be needed before the race could proceed. (wthr.com) ### Which parts of Sunday’s schedule were most exposed? FOX59’s race-day schedule said the 110th running was set against a full day of pre-race ceremonies before the main event. (indianapolismotorspeedway.com) The same report said Alex Palou was on pole for the race and that Helio Castroneves was in the field seeking a fifth Indianapolis 500 victory. Yahoo Sports said the green flag was scheduled for 12:45 p.m. (sports.yahoo.com) EDT. Because the forecast concern centered on the start window, any delay would likely affect the timing of pre-race ceremonies, the command to start engines and the race start itself. That sequencing is an inference from the published schedule and the forecast timing. ### Where were officials and fans looking for updates? (fox59.com) IndyStar was running a live weather and radar page on Sunday focused on the Speedway, while WTHR updated its race-day weather blog with timing estimates for showers and storms. FOX59 and the Indianapolis Motor Speedway schedule page were also carrying race-day information for fans tracking any change in timing. (sports.yahoo.com) Sunday’s next concrete milestone was the scheduled race start at 12:45 p.m. EDT, with Alex Palou on pole and weather updates continuing from local outlets and Speedway channels. (sports.yahoo.com) (indystar.com)