Windows were blown out of the YMCA as strong winds and rain hit buildings and streets on Friday, May 8, 2015 in Norman, Okla. Photo by Steve Sisney, The Oklahoman
A cars navigate in flood waters on Penn Ave. near Memorial Road as severe storms move the metro area, Friday, May 8, 2015, in Oklahoma City. Photo by Sarah Phipps, The Oklahoman
A car navigates flood waters on 1-235 near the 63rd exit as severe storms move the metro area, Friday, May 8, 2015, in Oklahoma City. Photo by Sarah Phipps, The Oklahoman
A car sits stalled in flood waters on Penn Ave. near Memorial Road as severe storms move the metro area, Friday, May 8, 2015, in Oklahoma City. Photo by Sarah Phipps, The Oklahoman
Cars navigate flood waters on 1-235 near the 63rd exit as severe storms move the metro area, Friday, May 8, 2015, in Oklahoma City. Photo by Sarah Phipps, The Oklahoman
Cars drive through high water on SW 89th, near Western Ave. in Oklahoma City, Friday, May 8, 2015. Photo by Bryan Terry, The Oklahoman
A car drives through high water on SW 89th, near Western Ave. in Oklahoma City, Friday, May 8, 2015. Photo by Bryan Terry, The Oklahoman
Laura Tontz heads to graduation at the Lloyd Noble Center just before the event was cancelled as strong winds and rain hit on Friday, May 8, 2015 in Norman, Okla. Photo by Steve Sisney, The Oklahoman
Norman fire vehicles are trapped between power lines on 48th Ave NW north of Robinson as strong winds and rain hit on Friday, May 8, 2015 in Norman, Okla. Photo by Steve Sisney, The Oklahoman
Norman fire vehicles are trapped between power lines on 48th Ave NW north of Robinson as strong winds and rain hit on Friday, May 8, 2015 in Norman, Okla. Photo by Steve Sisney, The Oklahoman
Norman firemen respond to a water rescue on a westside street as strong winds and rain affect buildings and streets on Friday, May 8, 2015 in Norman, Okla. Photo by Steve Sisney, The Oklahoman
Cars stop to look at Lake Hefner to look at a rainbow after storms moved through the area Friday, May 8, 2015. Photo by Bryan Terry, The Oklahoman
A man watches as the sun sets over Lake Hefner after storms moved through the area Friday, May 8, 2015. Photo by Bryan Terry, The Oklahoman
Peopple take pictures as the sun sets over Lake Hefner after storms moved through the area Friday, May 8, 2015. Photo by Bryan Terry, The Oklahoman
People take pictures of the setting sun at Lake Hefner following severe storms that moved through the metro area, Friday, May 8, 2015, in Oklahoma City. Photo by Sarah Phipps, The Oklahoman
A rainbow is pictured at Lake Hefner following severe storms that moved through the metro area, Friday, May 8, 2015, in Oklahoma City. Photo by Sarah Phipps, The Oklahoman
A rainbow is pictured at Lake Hefner following severe storms that moved through the metro area, Friday, May 8, 2015, in Oklahoma City. Photo by Sarah Phipps, The Oklahoman
The sun sets at Lake Hefner following severe storms that moved through the metro area, Friday, May 8, 2015, in Oklahoma City. Photo by Sarah Phipps, The Oklahoman
Lightning strikes as the sun sets at Lake Hefner, Friday, May 8, 2015, in Oklahoma City. Photo by Sarah Phipps, The Oklahoman