Strong mag. 6.4 earthquake - Eastern Honshu, Japan on Thursday, 28 March 1985
Magnitude: 6.4
Depth: 166.3 km
Epicenter latitude / longitude: 40.31°N / 140.362°E
(Japan)Nearest volcano: Daira-Komaga-take (14 km / 9 mi)
Nearby towns and cities:
10 km (6 mi) N of Takanosu (pop: 20,500)
17 km (11 mi) NW of Ōdate (pop: 64,500)
31 km (19 mi) NE of Noshiro (pop: 51,100)
65 km (40 mi) SW of Aomori (pop: 298,400)
69 km (43 mi) NE of Akita (pop: 320,100)
517 km (321 mi) N 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 |
| Thu, 28 Mar 16:07 UTC | M 6.4 / 166.3 km | Eastern 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: Eastern Honshu, Japan, 28 Mar 1985 16:07
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 - Eastern Honshu, Japan on Thursday, 28 March 1985Click here to search our database for earlier earthquakes in the same area since 1900!
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