To make a signal to:
Notify is defined as to tell, or to make known.
To signal with or as if with a flag.
To make predictions from signs or omens.
To prophesy or predict.
Warn is defined as to tell or caution against danger.
To warn of approaching danger
Find another word for forewarns. In this page you can discover 12 synonyms, antonyms, idiomatic expressions, and related words for forewarns, like: signals, portends, notifies, flags, cautions, augurs, alerts, admonishes, threatens, forebodes and warns.