The city created the rainbow initiative because the coronavirus pandemic curtailed plans to host a commemorative event, the city announced on social media.
The rainbow can be displayed between Saturday, May 23, and Wednesday, May 27.
Beginning Sunday, the Dayton Daily News will carry four days of storm anniversary coverage in print and online. Reporters Chris Stewart and Josh Sweigart, who walked the path of the most devastating tornado last year, have checked again on the pace of recovery and the issues still facing survivors and local jurisdictions. As part of this special reporting project, the Dayton Daily News will print a rainbow in the newspaper that readers can hang in their windows.