Lightning {blue jet} can flash between upper clouds and ionosphere, 44 to 50 miles away, in tree-like structure.
Far-away lightning reflections {heat lightning} can be on horizon clouds on hot summer evenings. Thunder is too far away to hear.
Lightning can cause mushroom-shaped flashes {red sprite} in ionosphere.
5-Earth Science-Atmosphere-Lightning
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Date Modified: 2022.0225