S: (n) earthquake (a disturbance that is extremely disruptive) "selling the company caused an earthquake among the employees"
S: (n) incident (a public disturbance) "the police investigated an incident at the bus station"
S: (n) stir, splash (a prominent or sensational but short-lived news event) "he made a great splash and then disappeared"
S: (n) storm, tempest (a violent commotion or disturbance) "the storms that had characterized their relationship had died away"; "it was only a tempest in a teapot"