20 Rare Weather Events Caught Defying the Sky

Across a frozen valley, hundreds of perfect cylinders dotted the field — hollow rolls of snow formed by wind alone. Each began as a clump, then was nudged across thin ice until it curled upon itself. Some reached the size of car tires. Scientists studying wind shear patterns called it a “rare meteorological ballet.” For hours, the earth

looked like a gallery of ice scrolls written by air.