Lightning
lightning: A visible electrical discharge produced by a thunderstorm from one cloud to another or from cloud to ground. Lightning kills more people in the US than do tornadoes.
CG: An abbreviation for cloud-to-ground lightning.
crawler lightning: A term for cloud-to-cloud lightning that spreads or "crawls" across the sky. This type of lightning is relatively rare and produces some of the most spectacular light shows for sky watchers. Also anvil crawlers.
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