Light mag. 4.0 earthquake - North Pacific Ocean, 79 km east of Mutsu, Aomori, Japan, on Thursday, Sep 2, 2021 8:46 am (GMT +9) -

Light mag. 4.0 earthquake - North Pacific Ocean, 79 km east of Mutsu, Aomori, Japan, on Thursday, Sep 2, 2021 8:46 am (GMT +9)

Light magnitude 4.0 earthquake at 58 km depth

1 Sep 23:52 UTC: First to report: NIED after 6 minutes.
Update Wed, 1 Sep 2021, 23:57
Moderate magnitude 4.0 earthquake 79 km northeast of Mutsu, Japan
4.0 quake 2 Sep 8:46 am (GMT +9)
4.0 quake 2 Sep 8:46 am (GMT +9)
Just 11 minutes ago, a 4.0-magnitude earthquake struck near Mutsu, Mutsu-shi, Aomori, Japan. The tremor was recorded in the morning on Thursday 2 September 2021 at 8:46 am local time, at a moderately shallow depth of 58.4 km below the surface.
The event was filed by Japan's National Research Institute for Earth Science and Disaster Resilience (NIED), the first seismological agency to report it.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 3.6 earthquake.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Mutsu (pop. 49,200) located 79 km from the epicenter.
Download the Volcanoes & Earthquakes app and get one of the fastest seismic alerts online:
Android | iOS

Earthquake data

Date & time: Sep 1, 2021 23:46:07 UTC -
Local time at epicenter: Thursday, Sep 2, 2021 8:46 am (GMT +9)
Magnitude: 4
Depth: 58.4 km
Epicenter latitude / longitude: 41.443°N / 142.141°E (North Pacific Ocean, Japan)
Antipode: 41.443°S / 37.859°W
Nearest volcano: E-san (90 km / 56 mi)
Nearby towns and cities:
79 km (49 mi) ENE of Mutsu (pop: 49,200) --> See nearby quakes!
105 km (65 mi) NE of Misawa (pop: 42,800) --> See nearby quakes!
118 km (73 mi) NNE of Hachinohe (pop: 239,000) --> See nearby quakes!
123 km (76 mi) ESE of Hakodate (pop: 275,700) --> See nearby quakes!
136 km (85 mi) SE of Muroran (pop: 96,200) --> See nearby quakes!
137 km (85 mi) ENE of Aomori (pop: 298,400) --> See nearby quakes!
140 km (87 mi) SSE of Tomakomai (pop: 174,800) --> See nearby quakes!
158 km (98 mi) SSE of Chitose (pop: 92,900) --> See nearby quakes!
192 km (119 mi) SSE of Sapporo (pop: 1,883,000) --> See nearby quakes!
674 km (419 mi) NNE of Tokyo (pop: 8,336,600) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 19.8°C (68 F), humidity: 74%, wind: 4 m/s (8 kts) from E
Primary data source: NIED (National Research Institute for Earth Science and Disaster Resilience)
Estimated released energy: 6.3 x 1010 joules (17.5 megawatt hours, equivalent to 15.1 tons of TNT) More info
Show interactive Map
[smaller] [bigger]
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!
If you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable to earthquake science, seismic 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.
Mag.DepthLocationSource
4.058 kmJapan: E OFF AOMORI PREFNIED
4.254 kmHOKKAIDO, JAPAN REGIONEMSC
4.255 km79 Km ENE of Mutsu, JapanUSGS

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!
Volcanoes & Earthquakes - new app for Android

Earlier earthquakes in the same area

Try our free app!
Volcanoes & Earthquakes - new app for Android
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:
  • Earthquake archive from 1900 onwards
  • 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!
Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Most texts and images, in particular photographs, on this website are protected by copyright. Further reproduction and use of without authorization is usually not consented. If you are not sure or need licensing rights for photographs, for example for publications and commercial use, please contact us.