perfect storm

American  

noun

1. Meteorology. a very intense and powerful storm arising from the convergence of an unusual set of weather patterns.

   A dying Hurricane Grace delivered the immeasurable tropical energy needed to create the perfect storm.

2. a detrimental or calamitous situation or event arising from the powerful combined effect of a unique set of circumstances.

   a perfect storm battering corporate pension plans.

---

perfect storm British  

noun

1. a combination of events which are not individually dangerous, but occurring together produce a disastrous outcome

---

Etymology

Origin of perfect storm

First recorded in 1935–40 in meteorological sense; in 1997 for current sense, from The Perfect Storm, a nonfiction book by Sebastian Junger, U.S. journalist and author (born 1962)

Example Sentences

"There's a perfect storm," she warned, pointing to how countries had been "very suddenly expected to make up a lot of investment in the health system which previously came from donors".

From Barron's • May 20, 2026

“Copper prices stretching to all-time highs is an example of a perfect storm of structural supply-side issues,” said John Caruso, senior market strategist at RJO Futures.

From MarketWatch • May 12, 2026

He said such changes had been a "perfect storm" alongside the rising cost of living.

From BBC • Apr. 29, 2026

Carruthers’ case is a perfect storm of capital punishment’s familiar failures: paid informants, information withheld from the jury, untested physical evidence, and the defendant’s mental illness.

From Slate • Apr. 20, 2026

The answer, as historians tell us, has to do with a perfect storm of place, time, personality, and luck: but it also has to do with his brilliance as an orator.

From "Words Like Loaded Pistols" by Sam Leith