An indication or warning of a future event.

भविष्यवाणी का संकेत

English Usage: She had a premonitory feeling that something bad was going to happen.

Hindi Usage: उसे एक भविष्यवाणी का संकेत था कि कुछ बुरा होने वाला है।

Serving as a warning or indication.

चेतावनी देने वाला

English Usage: The premonitory signs of the storm were evident in the darkening sky.

Hindi Usage: तूफान के चेतावनी देने वाले संकेत अंधेरे आसमान में स्पष्ट थे।