A perfect storm is a meteorological event aggravated by a rare combination of circumstances. The term is used by analogy to an unusually severe storm that results from a rare combination of meteorological phenomena.
The Oxford English Dictionary has published references going back to 1718 for "perfect storm", though the earliest citations use the phrase in the sense of "absolute" or "complete", or for emphasis, as in "a perfect stranger".
I have heard a brother of the story-telling trade at Naples preaching to a pack of good-for-nothing honest, lazy fellows by the sea-shore, work himself up into such a rage and passion with some of the villains whose wicked deeds he was describing and inventing, that the audience could not resist it; and they and the poet together would burst out into a roar of oaths and execrations against the fictitious monster of the tale, so that the hat went round, and the bajocchi tumbled into it, in the midst of a perfect storm of sympathy.— William Makepeace Thackeray, Vanity Fair
The first use of the expression in the meteorological sense comes from Thursday May 30th 1850, when the Rev. Lloyd of Withington (Manchester, England) describes 'A perfect storm of thunder and lightning all over England (except London) doing fearful and fatal damage" when recording monthly rainfall measurements for that year. This record is kept by the UK Meteorological Office. The next recorded instance is in the March 20, 1936, issue of the Port Arthur News in Texas: "The weather bureau describes the disturbance as 'the perfect storm' of its type. Seven factors were involved in the chain of circumstances that led to the flood."
In 1993, journalist and author Sebastian Junger planned to write a book about the 1991 Halloween Nor'easter storm. Technically, this storm was an extratropical cyclone. In the course of his research, he spoke with Bob Case, who had been a deputy meteorologist in the Boston office of the National Weather Service at the time of the storm. Case described to Junger the confluence of three different weather-related phenomena that combined to create what Case referred to as the "perfect situation" to generate such a storm:
- warm air from a low-pressure system coming from one direction
- a flow of cool and dry air generated by a high-pressure from another direction
- tropical moisture provided by tropical storm (or hurricane)
From that, Junger keyed on Case's use of the word perfect and coined the phrase perfect storm, choosing to use The Perfect Storm as the title of his book.
Junger published his book The Perfect Storm in 1997 and its success brought the phrase into popular culture. Its adoption was accelerated with the release of the 2000 feature film adaptation of Junger's book. Since the release of the movie, the phrase has grown to mean any event where a situation is aggravated drastically by an exceptionally rare combination of circumstances.
Although the 1991 Halloween Nor'easter was a powerful storm by any measure, there have been other storms that have exceeded its strength. According to Case, the type of convergence of weather events to which he was referring, while unusual, is not exceptionally rare or unique, despite the way the phrase is commonly used.
- Andrew Stern (2008-01-01). "Wordsmiths, avoid these words". Reuters. Retrieved 2008-06-19.
- The Met Office, UK
- "The Grammarphobia Blog: The imperfect storm". Grammarphobia.com. 2008-05-08. Retrieved 2013-10-29.
- (2000, June 29). "[https://www.sciencedaily.com/releases/2000/06/000628101549.htm Meteorologists Say "Perfect Storm" "(Not So Perfect)", Science Daily
- West, James. (2000, July 6). "[https://www.usatoday.com/weather/movies/ps/psname.htm The naming of ("The Perfect Storm"), USA Today
- "Prepare for another perfect storm Archived 2010-07-27 at the Wayback Machine"
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