Harbinger – A Person who signals the approach of another or an event
The hard binger's (harbinger) friend announced an event: that they were about to run out of food!
Examples of harbinger in a sentence
Everyone knows the groundhog is the harbinger of a change in seasons.
If a rise in crime is a harbinger of economic decline, then this country really is in trouble right now.
The surprisingly chilly day in September was a harbinger of all that winter has to offer.