A Time storm was a method of time/space transportation that could be viewed and experienced in many forms. Typically it was directly experienced by the people being taken through time as a swirl of coloured light, and unlike traversing the vortex in a TARDIS it was a tangible experience. (DW: Silver Nemesis)
Fenric took Ace through time in a time storm from her home town in Perivale, Earth to Iceworld, Svartos in order that she would meet the Seventh Doctor and then come to be of use in the final game against the Doctor. (DW: Dragonfire, The Curse of Fenric)
Fenric also took Lady Peinforte and her manservant Richard Maynarde from 1638 to 1988 in order to manipulate them into gathering the Nemesis statue. (DW: Silver Nemesis)
In 2010 Elizabeth Meadows said that a temporal storm damaged a Cyberman ship and caused it to crash to the Arctic Circle ten thousand years prior. (VG: Blood of the Cybermen)