Related Clues:

• The writing on the wall even for Norm Keane
• Gathering clouds, maybe
• Rainbow or ray of sunshine, perhaps
• Spilling salt is a bad one
• The Grim, in the Harry Potter books
• One might be good or evil
• A rainbow is said to be a good one
• Sign that might be described as 'ill'
• Sign taken as a warning
• Echoing submarine captain’s signal
• It's a sign!
• Those characters embraced by Jeanne Moreau going all the way back in The Black Cat?
• Dark clouds, e.g
• Itchy ears, to some
• Something interpreted from a bird's behavior, in the ancient Greek practice of ornithomancy