blue jet
noun1
Astronomy, Climatology, Meteorology, Natural sciences An upper atmospheric optical phenomenon associated with thunderstorms, a rapidly expanding disk-shaped region of luminosity, lasting less than a thousandth of a second, which occurs high above energetic cloud-to-ground lightning of positive or negative polarity.
- Mysterious bluejets can be seen with the naked eye from the ground, but they are rare and difficult to spot.1999, Patricia Barnes-Svarney, Thomas E. Svarney, Skies of fury: weather weirdness around the world, Simon and Schuster, page 100:
- Related terms
- blue starter, elve, gigantic jet, gnome, pixie, red sprite, sprite halo, sprite, transient luminous event, troll, upward lightning