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Satellite view of the Sierra Nevada and western Nevada from Yosemite National Park, at lower left, to Walker Lake, at the top of the images toward the right. The 'before' image was taken Feb. 16, 2018; the 'after' image on Feb. 11, 2019. Planet
Satellite view of the Sierra Nevada and western Nevada from Yosemite National Park, at lower left, to Walker Lake, at the top of the images toward the right. The 'before' image was taken Feb. 16, 2018; the 'after' image on Feb. 11, 2019. (Planet)
Snowpack

Before and After: See California's Monster Snow Year by Satellite

Snowpack

Before and After: See California's Monster Snow Year by Satellite

KQED Science
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A rolling conveyor belt of storms this winter has left the Sierra Nevada blanketed in a thick layer of snow. The year started modestly, with the snowpack measuring around 70 percent of average on the first of the year. A robust January and February has brought the snowpack up to around 145 percent of normal for this time of year. April 1 typically marks the peak of Sierra snowpack accumulation and the start of the spring runoff. Move the sliders below to view the terrain before and after snowstorms.

Sierra Nevada Mountains
Before: Feb. 8, 2018
After: Feb. 11, 2019

South Lake Tahoe Flyover Simulation
Before: Feb. 16, 2018
After: Feb. 11, 2019

Lake Tahoe
Before: Feb. 16, 2018
After: Feb. 11, 2019

Mammoth Lakes
Before: Feb. 16, 2018
After: Feb. 11, 2019

Kings Canyon National Park
Before: Feb. 16, 2018
After: Feb. 11, 2019

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