Strong mag. 6.4 earthquake - Off the East Coast of Honshu, Japan on Sunday, 23 April 1933
Magnitude: 6.4
Depth: 15.0 km
Epicenter latitude / longitude: 39.098°N / 143.557°E
(Japan)Nearest volcano: Iwate (235 km / 146 mi)
Nearby towns and cities:
144 km (90 mi) SE of Yamada (pop: 20,100)
146 km (91 mi) E of Ōtsuchi (pop: 16,500)
147 km (91 mi) E of Kamaishi (pop: 43,100)
152 km (94 mi) SE of Miyako (pop: 51,700)
159 km (99 mi) E of Ōfunato (pop: 35,400)
510 km (317 mi) NE of Tokyo (pop: 8,336,600)
Primary data source: USGS
Estimated released energy: 2.5 x 1014 joules (69.8 gigawatt hours, equivalent to 60036 tons of TNT or 3.8 atomic bombs!) [learn more]
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.
| Time | Mag. / Depth | Location | Source |
| Sun, 23 Apr 07:13 UTC | M 6.4 / 15 km | Off the East Coast of Honshu, Japan | 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!
So far, no aftershocks have been registered.
Aftershocks of the 6.4 quake: Off the East Coast of Honshu, Japan, 23 Apr 1933 07:13
More info
Recorded aftershocks, latest first (0 quakes):So far, no aftershocks have been registered.
Earlier earthquakes in the same area
Strong mag. 6.4 earthquake - Off the East Coast of Honshu, Japan on Sunday, 23 April 1933Click here to search our database for earlier earthquakes in the same area since 1900!
More on VolcanoDiscovery
Volcano Special expedition: Special tour to see the ongoing eruption of Shivleuch volcano. Max 6 participants, 5 nights on location, accompanied by our team and local volcanologists. Sign up deadline Sun 24 Feb 2019!
Volcano Photography group on facebook: Join our group on facebook if you are a fan of volcano photography (and videos), meet others, show your work!
