Update: Earthquake Magnitude 7.1 - EASTERN HONSHU, JAPAN, 2011 April 11

Earthquake Details

• This event has been reviewed by a seismologist.

Magnitude	7.1
Date-Time	Monday, April 11, 2011 at 08:16:13 UTC
Location	37.007°N, 140.477°E
Depth	10 km (6.2 miles)
Region	EASTERN HONSHU, JAPAN
Distances	36 km (22 miles) W of Iwaki, Honshu, Japan 44 km (27 miles) SSE of Koriyama, Honshu, Japan 71 km (44 miles) N of Mito, Honshu, Japan 161 km (100 miles) NNE of TOKYO, Japan
Location Uncertainty	horizontal +/- 12 km (7.5 miles); depth +/- 3.6 km (2.2 miles)
Parameters	NST=581, Nph=584, Dmin=209.3 km, Rmss=0.69 sec, Gp= 18°, M-type=regional moment magnitude (Mw), Version=C
Source	USGS NEIC (WDCS-D)

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