Wind and hail that cut across the southern Alberta prairie last month left a "scar" visible from outer space.

On Aug. 20, 2025, 150-kilometre-per-hour gusts shredded crops and stripped grass and ground cover. The storm slashed from south of Calgary to Saskatchewan, affecting about 425,000 acres of insurable crops, plus pasture and native grassland.

Severe thunderstorm in southern Alberta downs power lines, damages cars

Trail of destruction in Brooks, Alta., after golf ball-sized hailstorm rips through

That most intense zone of the storm — a sort of epicentre that dragged for hundreds of kilometres — left behind a "hail scar" that can be seen in satellite images published by U.S. space agency NASA.

Here, you can see a before and after of the landscape. (NASA)

A patchwork of green sh

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