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Strong mag. 6.8 earthquake - Off the East Coast of Honshu, Japan on Monday, 7 April 1958

Strong mag. 6.8 earthquake  - Off the East Coast of Honshu, Japan on Monday, 7 April 1958
Date & time: Monday, 7 April 1958 18:05 UTC
Magnitude: 6.8
Depth: 10.0 km
Epicenter latitude / longitude: 38.305°N / 143.317°E (Japan)
Nearest volcano: Narugo (230 km / 143 mi)
Nearby towns and cities:
163 km (101 mi) SE of Ōfunato (pop: 35,400)
166 km (103 mi) SE of Kamaishi (pop: 43,100)
170 km (106 mi) SE of Ōtsuchi (pop: 16,500)
176 km (110 mi) E of Ishinomaki (pop: 117,200)
199 km (124 mi) E of Shiogama (pop: 59,500)
434 km (270 mi) NE of Tokyo (pop: 8,336,600)
Primary data source: USGS
Estimated released energy: 1 x 1015 joules (278 gigawatt hours, equivalent to 2.4 x 105 tons of TNT or 14.9 atomic bombs!) [learn more]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
TimeMag. / DepthLocationSource
Mon, 7 Apr 18:05 UTCM 6.8 / 10 kmOff the East Coast of Honshu, JapanUSGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!

Aftershocks of the 6.8 quake: Off the East Coast of Honshu, Japan, 7 Apr 1958 18:05

More info
Recorded aftershocks, latest first (4 quakes):

Earlier earthquakes in the same area

Strong mag. 6.8 earthquake - Off the East Coast of Honshu, Japan on Monday, 7 April 1958
 

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