Tropical Storm Delta was a late-forming tropical storm of the 2005 Atlantic hurricane season which struck the Canary Islands as a strong extratropical storm causing significant damage and then crossed over Morocco with little impact there. It was the twenty-sixth tropical or subtropical storm of the season.
Tropical Storm Delta, like most late-season storms, developed out of an extratropical low. The storm only gradually gained tropical characteristics and was briefly a subtropical storm on November 22. Delta moved erratically for a few days before moving towards the Canary Islands. It became extratropical just before it passed to the north of the archipelago.