Bernie Rayno discusses last night's earthquake in Russia and the likelihood of a tsunami that follows.

Kamchatka Peninsula

A powerful 8.8 magnitude earthquake occurred off the Kamchatka Peninsula in eastern Russia, ranking among the strongest recorded. The earthquake's shallow depth contributed to the generation of a tsunami, with advisories issued for several regions.

Tsunamis are typically triggered by undersea earthquakes of magnitude seven or higher, especially when the quake's epicenter is close to the ocean floor. These waves can travel at speeds up to 500 miles per hour and their impact on coastlines depends on factors like wave height, coastline shape, and water depth. While some areas, such as Hawaii, experienced moderate wave heights, ongoing advisories remain in place for other coastal regions.

Explaining how tsunamis work

Keeping you updated on the powerful earthquake that occurred last evening, about 7.25 Eastern time off the Kamchatka Peninsula here in Eastern Russia, an 8.8 Earth magnitude earthquake occurred during that time, and this is likely going to be within the top ten of the strongest ever recorded. Now, remember the number seven. Anytime you get a magnitude earthquake of seven over the ocean floor, it is likely you're going to get a tsunami. Now, we have had some damage. It hasn't been the worst case scenario across Hawaii where we've seen wave heights about three to six feet earlier along the North Shore's other string of pearls. We're only expecting about a foot or two, though, along the West Coast, but we still do have tsunami advisories in effect. This had a focal depth of 12 feet below the ocean's surface. That is very shallow, so the closer the epicenter is of the earthquake to the ocean floor, the more it's lifted northward and the stronger the tsunami. Now, these tsunamis move very quickly in all directions. They can easily move at 500 miles per hour as they move in all directions. Now, as it approaches the coast, by the way, you're going to see the opposite, a drawback of the water right back toward the ocean, and then the tsunami approaches here. And of course, the shape of the coastline and how shallow it is will decide the depth of the tsunami, and ones with a strong magnitude can do a lot of damage as multiple waves crash onshore and spread inland.

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