On January 15th 2022, an underwater volcano erupted in the Pacific Island nation of Tonga, sending an ash cloud 100,000 feet in the air.  The massive eruption was clearly visible from space, and sparked a tsunami that rocked Pacific coastlines from New Zealand to Japan, Peru to Canada. Today, Christine and JJ describe satellite images of the blooming ash cloud, visualizations of the eruption's shockwave, and videos of the resulting tsunami.

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