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On July 20, a series of powerful undersea earthquakes rocked the Pacific coast of Russia’s Kamchatka Peninsula— the strongest measuring magnitude 7.4—triggerring tsunami alerts across the region and even prompting watches in places as distant as Hawaii. Kamchatka lies along the Pacific “Ring of Fire,” known for its intense seismic activity—historical quakes of magnitude 9+ have previously generated major tsunamis. Watch for more details.
