Monday, April 20, 2015

Japan issues tsunami alert after quake off Taiwan

A tsunami as large as one metre was reportedly forecast to hit islands in Japan's far south on Monday after a 6.6-magnitude earthquake struck off eastern Taiwan.


National broadcaster NHK said waves were possible on several islands in the southern Okinawa chain after a very shallow quake centred on Yonaguni in the southwest, near Taiwan.

Witnesses said buildings swayed in Taipei but there was no visible damage in the Taiwan capital.

"We are issuing warnings via the radio," Satoshi Shimoji of Japan's Miyako City government told NHK.
"We want residents to get as far as possible from the sea," he said.

NHK said the tsunami - an irregular wave that alters the sea level and not necessarily a huge event - is believed to have already arrived at remote Yonaguni, although no details were yet available.

Live footage from coastal cameras showed sea levels had apparently not risen in several harbours within the warning zone.

The Pacific Tsunami Warning Centre said in a statement that "based on all the available data... there is no tsunami threat from this earthquake."

The US Geological Survey said the 6.6-magnitude quake, which Japanese authorities had originally put at 6.8, struck 71km east of Hualian, Taiwan at 0143 GMT.

Japan sits at the confluence of four of the earth's tectonic plates and registers more than 20 percent of the planet's most powerful earthquakes every year.

More than 18,000 people were killed by a huge tsunami that smashed into the northeast coast in 2011 after a huge 9.0 magnitude earthquake.
Source: AFP
aljazeera.com
20/4/15
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  • Earthquake M 6.6 - TAIWAN REGION - 2015-04-20 01:42:59 UTC

Magnitude Mw 6.6
Region TAIWAN REGION
Date time 2015-04-20 01:42:59.2 UTC
Location 24.18 N ; 122.44 E
Depth 30 km
Distances 133 km SE of Taipei, Taiwan / pop: 7,871,900 / local time: 09:42:59.2 2015-04-20 
88 km E of Hualian, Taiwan / pop: 350,468 / local time: 09:42:59.2 2015-04-20 
65 km SW of Yonakuni, Japan / pop: 1,684 / local time: 10:42:59.2 2015-04-20 
emsc-csem.org
20/4/15
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  • Magnitude Mw 6.0

Region TAIWAN REGION
Date time 2015-04-20 12:00:01.0 UTC
Location 24.13 N ; 122.64 E
Depth 30 km
Distances

  • 151 km SE of Taipei, Taiwan / pop: 7,871,900 / local time: 20:00:01.0 2015-04-20 
  • 107 km E of Hualian, Taiwan / pop: 350,468 / local time: 20:00:01.0 2015-04-20 
  • 52 km SW of Yonakuni, Japan / pop: 1,684 / local time: 21:00:01.0 2015-04-20 





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