My Suggestions

ciumĩte

v.

  1. they (class 8/10) having come from (perfect participle)
  2. Perfect participle of kuuma with class 8/10 subject

Example: "Ũmũthĩ huho nĩcio igũkorwo ikĩgangara tondũ cigũkorwo ciumĩte mwena wa irathĩro rĩa bũrũri" — Today the winds will be strong because they are coming from the eastern side of the country.