What great winter precedes Ragnarök?

The story behind the answer

Fimbulwinter is the “mighty winter” (Old Norse Fimbulvetr: fimbul = mighty, vetr = winter) that arrives just before Ragnarök. The Poetic Edda and Snorri’s Prose Edda describe it as three unbroken winters with no summers between them, bringing famine, war, and moral collapse—clear omens that the final clash of the gods is near.

Memory tip: FIMBul = Fierce, Massive, BRR! It’s the ultimate cold. The myth likely grew from the Norse experience of harsh Scandinavian winters, magnified into a cosmic sign that the world was tipping toward its end.