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A seismogram recorded in Massachusetts, United States. The magnitude 9.1 (M w) undersea megathrust earthquake occurred on 11 March 2011 at 14:46 JST (05:46 UTC) in the north-western Pacific Ocean at a relatively shallow depth of 32 km (20 mi), [9] [56] with its epicenter approximately 72 km (45 mi) east of the Oshika Peninsula of Tōhoku, Japan, lasting approximately six minutes.
A diagram of the Dart II System A tsunami buoy Water column height on 11 March 2011 (Tōhoku earthquake and tsunami) at DART buoy 21413, 690 NM Southeast of Tokyo Plot of measurements from DART buoy 34142 showing the passage of the tsunami generated by the 2010 Chile earthquake.
Joetsu city in Niigata Prefecture observed a tsunami with a height of more than 6.6 metres (21.7 ft). Kanazawa City in Ishikawa Prefecture observed a tsunami at a height of 0.9 metres (2 ft 11 in). [217] Toyama City in Toyama Prefecture and Sakata City in Yamagata Prefecture both observed a tsunami with a height of 0.8 metres (2 ft 7.5 in). [217]
The magnitude 7.1 quake occurred off the country’s northeastern coast late Saturday, local time.
Japan had experienced 900 aftershocks after the M9.1 earthquake on March 11, 2011 with about 60 aftershocks being over magnitude 6.0 and three over magnitude 7.0. For conciseness, only earthquakes with magnitudes greater than 7.0 or an intensity greater than lower-6 on the shindo scale are listed here.
This is an alphabetically sorted list of cities and towns severely damaged by the 2011 Tōhoku earthquake and tsunami. Cities and towns listed here reported at least US$ 100,000 in damage or at least one death.
A massive quake in 2011 caused a tsunami that destroyed huge swaths of northern Japan and caused a meltdown at the Fukushima nuclear plant. Almost 20,000 people were killed in the series of disasters.
Japan is one of the world's most earthquake-prone countries. More than 15,000 people were killed in a magnitude 9 quake in 2011 that triggered a devastating tsunami and triple reactor meltdowns at ...