`` 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 . But for its third airing -- weeks after the film 's original telecast . Comment:
`` 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 . Comment: