The NOAA tsunami warning for the west coast of North America.
(Credit: NOAA) The quake struck Friday at 2:46 p.m. local time about 230 miles northeast of Tokyo. Aftershocks registered 7.1, 6.2, and 5.9, according to the U.S. Geological Survey's report.
(Credit: USGS) NOAA, the U.S. National Oceanic and Atmospheric Administration, issued a tsunami warning for Hawaii, for parts of Alaska, and for the West Coast of the United States from Oregon to Central California. Washington state and Southern California have a tsunami advisory.
"A tsunami warning means that all coastal residents in the warning area who are near the beach or in low-lying regions should move immediately inland to higher ground and away from all harbors and inlets including those sheltered directly from the sea," NOAA said. "Those feeling the earth shake, seeing unusual wave action, or the water level rising or receding may have only a few minutes before the tsunami arrival and should move immediately. Homes and small buildings are not designed to withstand tsunami impacts. Do not stay in these structures."
According to NOAA's tsunami arrival schedule, the first waves should reach San Francisco at 8:08 a.m. PT. "Tsunami amplitudes [wave heights] are expected to peak two to three hours after initial arrival along the North American coast," NOAA warned.
Television images of Japan on CNN showed waves exceeding 12 feet flowing inland (see video below), causing massive damage and carrying along cars, boats, and small buildings. Hundreds of people were evacuated from Tokyo's Shinjuku Station, purportedly the world's busiest, and train and subway services were halted, according to media reports. Tokyo's main airport was also closed.
In keeping with past efforts to assist in disaster relief, Google has launched Person Finder to help people search for information about others by name or leave information in Japanese.
Twitter captured the events as they happened. The number of tweets coming from Tokyo were topping 1,200 per minute, according to the Tweet-o-Meter, and Hawaii observers chimed in later. "Long lines at gas stations and supermarkets as Hawaii braces for tsunami," tweeted Jaymes Song, an editor for the Associated Press. "Tsunami warning sirens going off in Honolulu," he added.
NOAA issued this estimate of when the tsunami would reach various parts of the world.
(Credit: NOAA) Two nuclear plants on Japan's Pacific Coast were automatically shut down, according to the Kyodo News Agency. One plant's cooling system failed, leading to a state of emergency and an evacuation of more than 2,800 people, though no radiation has been released, according to the AP.
Kristen McQuillin, a 44-year-old Pennsylvania native who is a longtime Tokyo resident, was at home with her husband, Tod, when the quake hit.
"When the shaking intensified, I secured an exit to the second-floor apartment," she told CNET in an e-mail. "Our five-story apartment building shuddered and rocked like a ship at sea; loose objects fell over or slid. We stood in the doorway watching the birds flap confusedly, trees sway, and every local structure rattle and moan. We are still feeling aftershocks now, three hours later."
"After the quake subsided and our initial panic abated, we went out to assess the damage and check in on our neighbors. Everyone was fine, with most damage being minor. Some stone lanterns had toppled over, a few sagging cable lines, some new cracks and crumbles, but nothing devastating," McQuillin said. "We live near Kasuga Dori, one of the main emergency arteries, and it was busy with people walking towards home--quickly and with determination, a rarity in a city that strolls--and packed with cars, off-meter taxis, and buses completely full."
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