Moderate mag. 4.2 earthquake - Yatsushiro-gun, 5.5 km south of Matsubase, Uki Shi, Kumamoto, Japan, on Sunday, 24 Jan 2021 12:57 am (GMT +9) -

Moderate mag. 4.2 earthquake - Yatsushiro-gun, 5.5 km south of Matsubase, Uki Shi, Kumamoto, Japan, on Sunday, 24 Jan 2021 12:57 am (GMT +9)

Moderate magnitude 4.2 earthquake at 13 km depth

23 Jan 16:05 UTC: First to report: NIED after 8 minutes.
Update Sat, 23 Jan 2021, 16:09
Light magnitude 4.2 earthquake 5 km south of Matsubase, Japan
4.2 quake 24 Jan 12:57 am (GMT +9)
4.2 quake 24 Jan 12:57 am (GMT +9)
Just 11 minutes ago, a 4.2-magnitude earthquake struck near Matsubase, Uki Shi, Kumamoto, Japan. The tremor was recorded after midnight on Sunday 24 January 2021 at 12:57 am local time, at a shallow depth of 12.7 km below the surface.
The event was filed by NIED, the first seismological agency to report it.
Our monitoring service identified a second report from the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 3.9.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Matsubase (pop. 26,200) located 5 km from the epicenter, Uto (pop. 39,200) 9 km away, Honmachi (pop. 104,300) 12 km away, Kumamoto (pop. 680,400) 23 km away, Uekimachi-mōno (pop. 31,700) 33 km away, Shimabara (pop. 38,100) 34 km away, and Ōzu (pop. 29,800) 37 km away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Hitoyoshi (pop. 38,000) located 44 km from the epicenter.
Download the Volcanoes & Earthquakes app to get one of the fastest seismic alerts online:
Android | IOS

Earthquake data:

Date & time: 23 Jan 2021 15:57:34 UTC -
Local time at epicenter: Sunday, 24 Jan 2021 12:57 am (GMT +9)
Magnitude: 4.2
Depth: 12.7 km
Epicenter latitude / longitude: 32.601°N / 130.66°E (Yatsushiro-gun, Kumamoto, Japan)
Nearest volcano: Unzen (38 km / 24 mi)
Nearby towns and cities:
5 km (3 mi) S of Matsubase (Uki) (pop: 26,200) --> See nearby quakes!
9 km (6 mi) S of Uto (pop: 39,200) --> See nearby quakes!
12 km (8 mi) NNE of Honmachi (pop: 104,300) --> See nearby quakes!
23 km (14 mi) S of Kumamoto (pop: 680,400) --> See nearby quakes!
33 km (21 mi) S of Uekimachi-mōno (Kumamoto) (pop: 31,700) --> See nearby quakes!
37 km (23 mi) SSW of Ōzu (Kikuchi District) (pop: 29,800) --> See nearby quakes!
44 km (27 mi) NNW of Hitoyoshi (pop: 38,000) --> See nearby quakes!
52 km (32 mi) SSE of Omuta (Fukuoka) (pop: 132,000) --> See nearby quakes!
113 km (70 mi) SSE of Fukuoka (pop: 1,392,300) --> See nearby quakes!
899 km (559 mi) WSW of Tokyo (pop: 8,336,600) --> See nearby quakes!
Weather at epicenter at time of quake:
Moderate Rain 10°C (50 F), humidity: 93%, wind: 6 m/s (11 kts) from NNE
Primary data source: NIED
Estimated released energy: 1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 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!
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.

User reports for this quake (2)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
Kumamoto-shi / Very weak shaking (MMI II) / 2-5 s : I was sleeping and could feel my 3rd floor apartment shaking. I remember trying to determine if I should get up or not but it ended maybe 2 or 3 seconds after it started so I didn't.
Kumamoto / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : I could heard earthquake sound before main shaking. i
Volcanoes & Earthquakes - new app for Android

Earlier earthquakes in the same area since 1900

Map of earlier quakes

Volcanoes & Earthquakes - new app for Android
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:
  • Weather reports
  • Tsunami alerts
  • Design upgrades
  • Faster responsiveness
Thanks to your past donations, these features have been added recently:
  • Earthquake archive from 1900 onwards
  • Additional seismic data sources
  • Improved content in English
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.