Why do some places get much more snow than nearby areas at the same altitude?
Quick Answer
Small changes in wind direction, slope, and moisture can make one mountain side much snowier than another. The windward side forces moist air upward, where it cools and drops snow.
The Full Story
When moist air is pushed up a mountain, it expands and cools, causing water vapor to condense and freeze into snow. The leeward side often gets much less precipitation because the air has already lost much of its moisture on the windward slope, creating a rain shadow. Local factors such as valley shape, storm track, and whether a ridge faces the prevailing wind can change snowfall dramatically over just a few kilometers. This is why neighboring ski areas can have very different snow totals in the same winter.
Key Facts
YouTube Angle
Suggested video title for this topic:
"Why is one hillside buried in snow while the next one stays drier?"
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