Almost every single day of the year, lightning strikes the ground somewhere in the United States. Over the course of a year, lightning hits the ground in the continental US over 20 million times, and worldwide, lightning hits the ground 100 times a second, or over eight million times every day.
Occasionally, lightning strikes are positively charged rather than the usual negatively charged streak of electricity. These positively charged lightning strikes, sometimes called 'bolts from the blue', can occur near the edges of storm clouds and then strike more than ten miles from their origin. They literally seem to appear out of nowhere as they can travel long distances in clear, cloudless skies before angling down and striking the ground.
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