Nouns

(n)omen, portent, presage, prognostic, prognostication, prodigya sign of something about to happen“he looked for an omen before going into battle”
(n)prediction, foretelling, forecasting, prognosticationa statement made about the future
(n)prophecy, prognostication, vaticinationknowledge of the future (usually said to be obtained from a divine source)