`` Sharknado '' delivered its biggest audience with its first airing . Viewership has climbed to August 22 ahead after the first telecast . It 's now the most-watched encore for an original movie in Syfy history . The final `` `` Ghost Shark '' '' airing will be on August 22 ahead of Sharknado
`` Sharknado '' delivered its biggest audience with its third airing . Viewership has climbed to 2.1 million weeks after the first telecast . It 's now the most-watched encore for an original movie in Syfy history . The final `` Sharknado '' airing will be on August 22 ahead of `` Ghost Shark ''