blue jet

noun

Definition of blue jet

:a rare form of electrical discharge that is emitted from the top of a cumulonimbus cloud during a thunderstorm as a large upward jet of blue light
  • Wescott and Sentman discovered that sprites are salmon-colored, and as they flew with Tobolski over the Arkansas storm that summer, they discovered that sprites were not alone above the clouds: fountains of blue light emerged directly from the clouds as well. These they named blue jets.
  • —Elwood NorrisDiscoverJuly 1997
  • Blue jets, by far the rarest member of the menagerie, shoot up from cloudtops at speeds of more than 60 miles a second to heights of 30 miles.
  • —Karen WrightScientific AmericanSpring 2000

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First Known Use of blue jet

1994


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