Earthquake Tsunami Warning: Alaska, Hawaii, California, Japan Impacted - 10 Developments After Russia Quake

2. Tsunami alerts: The massive quake triggered immediate tsunami alerts across the Pacific, impacting regions from Japan , to the US West Coast , Canada, and New Zealand.

3. Aftershocks: The main earthquake was followed by multiple strong aftershocks, some as powerful as 6.9 magnitude, maintaining a risk of further tsunamis, particularly in Avacha Bay.

4. Recorded tsunami heights: Tsunami waves reached significant heights, including 3-4 meters (10-13 feet) in Kamchatka, 60 centimeters (2 feet) on Japan's Hokkaido island, up to 1.4 feet (under 30 centimeters) in Alaska's Aleutian Islands, and 2-5 feet in San Francisco. Hawaii observed water receding by 20-30 feet at Haleiwa Harbor.

5. Evacuations and disruption: Millions of people in coastal areas were initially advised to evacuate or seek high ground. Residents fled inland in Kamchatka, and traffic jammed streets in Honolulu. Japan saw nearly 2 million under evacuation advisories, with transportation disruptions including suspended ferries and delayed trains.

6. Warnings downgraded/canceled: As the immediate danger lessened, authorities in Hawaii, Japan, and parts of Russia downgraded or canceled their tsunami warnings and advisories, allowing many evacuees to return home. However, cautions about strong currents and lingering waves remained.

7. Limited injuries and damage in Russia: Russian authorities reported several minor injuries, primarily from people rushing to evacuate buildings, but all were in stable condition. Damage included a local kindergarten under renovation in Petropavlovsk-Kamchatsky and power cuts in Severo-Kurilsk, though no major structural damage was widely reported.

8. Japan's nuclear plants unaffected: Despite the 2011 Fukushima disaster memories, Japan's nuclear power plants reported no abnormalities in operations. Workers at the Fukushima Daiichi plant took shelter on higher ground as a precautionary measure.

9. Persistent tsunami activity: Officials emphasized that a tsunami is not a single wave but a series of powerful waves that can last for hours or even more than a day, urging continued caution and avoidance of coastlines even after initial surges.

10. Geological significance: The earthquake occurred along the Pacific Ring of Fire , a seismically active zone where most of the world's earthquakes occur, making such powerful events a recurring, albeit rare, phenomenon.

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