Tsunami was a steel roller coaster manufactured by Anton Schwarzkopf and located at the San Marcos National Fair in Mexico.

The coaster was previously located at Six Flags Discovery Kingdom as Zonga, Six Flags AstroWorld as "Texas Tornado", and operated for 10 years on the German traveling funfair circuit as "Thriller"[1] After its time at Marine World, it was sold to the San Marcos National Fair, where it last operated.

[2] This coaster debuted as "Thriller" on the German funfair circuit in 1986, under the ownership of Oscar Bruch and toured the country until 1997, with a short spell on loan to the Gröna Lund amusement park for the 1996 season.

In 2003, Texas Tornado was moved to Six Flags Discovery Kingdom and some track modifications were made by Premier Rides.

[4] Zonga was then bought in 2008 by the Aguascalientes State government in Mexico, for its use in the famous San Marcos National Fair, where it has been renamed "Tsunami".

[5] From a news article published by a local newspaper on 23 October 2013, it was announced Tsunami would no longer operate in Mexico after La Feria de San Marcos ended in 2014.