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Gravity Waves

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After the northern lights began to fade and the clouds cleared, a strange wave pattern became visible in the sky. This is airglow, a chemical reaction that occurs at the same altitude as the aurora, but it's a separate process. This night was the only time I've ever seen it with the naked eye. I'm pretty sure it was caused by gravity waves from powerful severe thunderstorms that impacted Illinois earlier in the evening.

Copyright
Kevin Palmer
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4570x3027 / 9.4MB
Keywords
Contained in galleries
Night Sky, Wisconsin, Northern Lights
After the northern lights began to fade and the clouds cleared, a strange wave pattern became visible in the sky. This is airglow, a chemical reaction that occurs at the same altitude as the aurora, but it's a separate process. This night was the only time I've ever seen it with the naked eye. I'm pretty sure it was caused by gravity waves from powerful severe thunderstorms that impacted Illinois earlier in the evening.