Related Clues:

• Dark clouds, perhaps
• Dark clouds, sometimes
• Spilt salt, e.g.
• Straw in the wind, e.g.
• Premonition
• It may come from above
• Foretoken
• Shooting star, to some
• 1976 Gregory Peck thriller "The ___"
• It could mean trouble
• Portentious sign
• Full moon, to some
• It could be a bad sign
• Mystical sign
• What a seer may seek