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The Frazil Ice Phenomenon in Yosemite Falls

Watch the ice lava flowing down the park streams

The Frazil Ice Phenomenon in Yosemite Falls in Yosemite 2019 - Best Time
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© Melissa - San Francisco Gal

During some mornings in Yosemite Valley, when the weather is below freezing, you can see a rare phenomenon called "frazil ice" at the base of the waterfalls. These are small ice crystals of frozen mist that float down the creek and form a moving stream of slush that looks like frozen lava! It usually occurs in the morning, before 9 am.

Frazil ice is often accompanied by another phenomenon called the snow cone which occurs when falling water from the falls freezes before it hits the ground and piles into a large cone of ice.

You can often witness frazil ice in spring, especially in April, but sometimes in March and May as well.

The Frazil Ice Phenomenon in Yosemite Falls in Yosemite - Best Season 2019
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