What is harbinger or portent in Tagalog?

In Tagalog, "harbinger" can be translated as "sagisag" or "sagisag ng pagbabago," while "portent" can be translated as "palatandaan" or "palatandaan ng hinaharap." Both terms refer to signs or indicators of future events, often with a sense of forewarning. They are used to describe something that signals what is to come, whether good or bad.