10 of the World’s Weirdest Weather Phenomena

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#9 Green Flash

World’s Weirdest Weather

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An optical phenomenon enhanced by a mirage (see #10), green flashes are normally seen when the air is clear, at sunset or just after the sun has risen. Also known as green ray, it looks quite simply like a green flash over the rising or setting sun, and lasts for only a few moments. Green flash is caused by the refraction of light (from the sun) in the atmosphere, as the light separates into different colors (as it does when a rainbow or moonbow – see #8 – forms.)

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