blue jet
Blue jets shoot upward from the tops of thunderclouds. This remoteness, and the
fact that they last but a few hundred milliseconds at most, perhaps accounts
for why they were not discovered until 1994. The color of sapphires, they are
cone-shaped in structure and extend for many miles. Like sprites and elves,
blue jets provide a mechanism for energy transfer from lightning and
thunderstorms to regions of the atmosphere between thunderclouds and the lower
ionosphere.
