Related Clues:

• Handwriting on the wall
• Preindication
• Foreshadow
• Straw in the wind
• Sign for the superstitious
• Overcast sky, say
• Broken mirror, to some
• Soothsayer's clue
• Parting of the heavens, maybe
• Verne character moving against the tide?
• Seer's sign
• Warning sign
• Telltale sign
• Sign of things to come
• Forewarning