Contact | RSS | EN | DE | EL | ES | FR | IT | RU

Very strong mag. 6.5 earthquake - 37 km southeast of Okushiri Island, Hokkaido, Japan, on Saturday, August 7, 1993 at 19:42 GMT

This quake was likely an aftershock of the 7.7 quake 79 km north of Okushiri Island, Hokkaido, Japan, July 12, 1993 13:17 GMT, which had occurred 4 weeks earlier.

Very strong mag. 6.5 earthquake - 37 km southeast of Okushiri Island, Hokkaido, Japan, on Saturday, August 7, 1993 at 19:42 GMT

Very strong magnitude 6.5 earthquake at 14 km depth

Earthquake details

Date & time	Aug 7, 1993 19:42:41 UTC
Local time at epicenter
Status	Confirmed
Magnitude	6.5
Depth	13.8 km
Epicenter latitude / longitude	41.985°N / 139.839°E (Japan Sea, Japan)
Antipode	41.985°S / 40.161°W
Shaking intensity	Very strong shaking near epicenter
Felt	0 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Okushiri-Katsuma-yama (38 km / 24 mi)
Nearby towns and cities	69 km (43 mi) WNW of Kamiiso (pop: 38,100) \| Show on map \| Quakes nearby 71 km (44 mi) W of Honchō (Kameda-gun) (pop: 30,000) \| Show on map \| Quakes nearby 78 km (48 mi) WNW of Hakodate (pop: 275,700) \| Show on map \| Quakes nearby 100 km (62 mi) WSW of Date (pop: 35,300) \| Show on map \| Quakes nearby 102 km (63 mi) WSW of Muroran (pop: 96,200) \| Show on map \| Quakes nearby 150 km (93 mi) NNW of Aomori (pop: 298,400) \| Show on map \| Quakes nearby 162 km (101 mi) WSW of Tomakomai (pop: 174,800) \| Show on map \| Quakes nearby 164 km (102 mi) NNW of Hirosaki (pop: 175,000) \| Show on map \| Quakes nearby 173 km (107 mi) SW of Sapporo (pop: 1,883,000) \| Show on map \| Quakes nearby 700 km (435 mi) N of Tokyo (pop: 8,336,600) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake
Estimated seismic energy released	3.5 x 10¹⁴ joules (98.6 gigawatt hours, equivalent to 84802 tons of TNT or 5.3 atomic bombs!) \| about seismic energy

Show interactive Map

[smaller] [bigger]

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.

Mag.	Depth	Location	Source
6.5	14 km	Hokkaido, Japan region	USGS

Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

Most recent quakes Top 20 past 24 hrs Quakes in Japan

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.

Aftershocks

Please check again later while we are collecting more data.

Earlier earthquakes in the same area

Click here to search our database for earlier earthquakes in the same area since 1900!

Try our free app!

Android | iOS version

Why is there advertising on this site?

Support us - Help us upgrade our services!

We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment).

Planned features:

Improved multilanguage support
Tsunami alerts
Faster responsiveness

Thanks to your past donations, these features have been added recently:

Design upgrade
Detailed quake stats
Additional seismic data sources

Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS

Thank you!

Sources: VolcanoDiscovery / VolcanoAdventures and other sources as noted.
Use of material: Most text and images on our websites are owned by us. Re-use is generally not permitted without authorization. Contact us for licensing rights.

Volcanoes & Earthquakes