Blood Tsunami formed in 2004 with Pete on guitar and vocals and Jay on drums. Soon Riff Randall joined on bass and Dor stepped in on the second guitar. Shortly after they recorded their first demo and on August the 24th 2004 they performed their first show ever, ...as support for the Swedish death metal legends Entombed. A few weeks later the band would also go on stage as the support act for the American death metal band Deicide.

The first line up of Blood Tsunami proved to be unstable and both Jay and Riff was replaced within the first year. Bosse, who previously used to play with Pete in the punk/rock band called Hellride, took over the bass and Faust (Scum, Aborym, ex-Emperor) soon joined on drums. The new line up quickly entered Lion Heart Studios and during three days in July 2005 they recorded another demo. The band continued playing live and soon built a good reputation as a ferocious live act in the Norwegian metal scene.

In September 2006 the band once again entered Lion Heart Studio in Oslo and recorded their debut album for Nocturnal Art Productions / Candlelight Records. The album, "Thrash Metal", was released on the 19th of March 2007 and has been very well received by both metalheads and metalpress.