Former "Storm Chaser" star Tim Samaras, his son Paul Samaras, and colleague Carl Young died while chasing the Oklahoma storm on Friday, May 31.
"We are deeply saddened by the loss of Tim Samaras his son Paul and their colleague Carl Young. Our thoughts and prayers go out to their families," Discovery Channel said in a statement.
Discovery will dedicate the Sunday, June 2 special "Mile Wide Tornado: Oklahoma Disaster" to the trio's memory. They don't appear in the series, but the memorial card will read: "In memory of Tim Samaras, Carl Young and Paul Samaras who died Friday, May 31st doing what they love, chasing storms."
"Storm Chasers" aired for five seasons on Discovery Channel before ending in November 2011.
"Mile Wide Tornado: Oklahoma Disaster" airs Sunday, June 2 at 10 p.m. ET on Discovery.