An atmospheric disturbance involving perturbations of the prevailing pressure and wind fields on scales ranging from tornadoes to extratropical cyclones; also the associated weather and the like.
(Source: MGH)
a violent commotion or disturbance; "the storms that had characterized their relationship had died away"; "it was only a tempest in a teapot"
(literary) a violent wind; "a tempest swept over the island"