Maui News

No Tsunami Threat to Hawaii Following 7.1 Japan Quake

April 7, 2011, 6:45 AM HST
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Posted by Wendy Osher

Click image to view in detail. Image courtesy USGS.

A large earthquake in Japan early this morning did not trigger a tsunami threat to Hawaii.  The quake occurred in the same Honshu region of the country as the destructive March 11th quake.  The 7.1 magnitude earthquake was reported shortly after 4:30 Hawaii time this morning.

Magnitude 7.1
Date-Time
Location 38.253°N, 141.640°E
Depth 49 km (30.4 miles)
Region NEAR THE EAST COAST OF HONSHU, JAPAN
Distances 66 km (41 miles) E of Sendai, Honshu, Japan
114 km (70 miles) E of Yamagata, Honshu, Japan
116 km (72 miles) ENE of Fukushima, Honshu, Japan
330 km (205 miles) NNE of TOKYO, Japan
Location Uncertainty horizontal +/- 13.1 km (8.1 miles); depth +/- 7.2 km (4.5 miles)
Parameters NST=426, Nph=427, Dmin=358.4 km, Rmss=0.75 sec, Gp= 32°,
M-type=regional moment magnitude (Mw), Version=B

*** Supporting information courtesy USGS and Pacific Tsunami Warning Center.

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