Related Clues:

• Red sky, to sailors
• Soothsayer's subject
• Mystical indicator
• Dark cloud, maybe
• Portentous signal
• Sign of a sort
• Prognostication
• Sign of what's to come
• Sign ... or a description of the answers to the six starred clues?
• Red sky in the morning, e.g.
• Eerie sign
• Soothsayer's sighting
• Impending clouds, e.g.
• Shooting star, maybe
• Gathering clouds, e.g.