USGS · August 30, 2026
Magnitude 4.7 earthquake — 16 km ENE of Hasaki, Japan
A magnitude 4.7 earthquake was recorded near 16 km ENE of Hasaki, Japan on Aug 30, 2026, 12:17 AM (local time at the epicentre — UTC+9), at a depth of about 34.8 km, according to USGS.
USGSFelt by 12 people · community intensity IV (light)Shallow (0–70 km)Reviewed by a seismologist
Updated 2026-09-04 18:45 UTC
The full record
- Magnitude
- M 4.7 · moment magnitude (W-phase)
- Location
- 16 km ENE of Hasaki, Japan
- Local time at the epicentre
- Aug 30, 2026, 12:17 AM — UTC+9
- Time (UTC)
- 2026-08-29 15:17 UTC
- Depth
- 34.8 km · Shallow (0–70 km)
- Coordinates
- 35.803, 140.994
- Felt reports
- Felt by 12 people · community intensity IV (light)
- Tsunami
- No tsunami evaluation was flagged for this earthquake.
- Significance
- 344 / 1000 · notable event
- Solution quality
- 124 seismic stations used · 120° azimuthal gap (well-constrained epicentre)
- Review status
- Reviewed by a seismologist
- Catalog
- USGS
Epicentre and nearby recent earthquakes
The highlighted circle is this earthquake. Smaller circles are other events recorded nearby in the last 30 days.
What the shaking was like
Shallow earthquakes release their energy close to the surface, so they are felt more strongly nearby than a deeper earthquake of the same magnitude.
People who reported it described intensity IV (Light): Felt indoors by many; dishes and windows rattle and parked cars rock.
Felt it yourself? USGS collects first-hand reports through “Did You Feel It?”, and those reports are what produce the community intensity above.
Who lives nearby
About 110,868 people live in towns within 30 km of the epicentre, and 9,583,896 within 100 km. Distances are from the epicentre to the town centre.
| Place | Distance | Population |
|---|---|---|
| Choshi | 16.4 km WSW | 58,431 |
| Hasaki | 16.4 km WSW | 39,209 |
| Sukayama | 29.7 km W | 13,228 |
| Kamisu | 31.3 km WNW | 95,454 |
| Asahi | 32.5 km WSW | 64,690 |
| Omigawa | 34.4 km W | 25,763 |
| Kashima-shi | 36.3 km WNW | 66,950 |
| Sōsa | 40.9 km WSW | 35,674 |
| Yōkaichiba | 41.6 km WSW | 32,651 |
| Itako | 42.5 km WNW | 27,604 |
Earthquake history in this area
12 earthquakes of magnitude 4.5+ have been recorded within 200 km of this epicentre since 1960, in Japan.
Other earthquakes near this epicentre
7 other events within 100 km in the last 30 days.
Be first to know about the next earthquake near 16 km ENE of Hasaki, Japan
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Frequently asked questions
How strong was the 16 km ENE of Hasaki, Japan earthquake?
Magnitude 4.7 (moment magnitude (W-phase)), at a depth of 34.8 km. Shallow earthquakes release their energy close to the surface, so they are felt more strongly nearby than a deeper earthquake of the same magnitude.
Exactly when did it happen?
Aug 30, 2026, 12:17 AM (local time at the epicentre — UTC+9). In universal time: 2026-08-29 15:17 UTC.
Was it felt?
Felt by 12 people · community intensity IV (light). Felt indoors by many; dishes and windows rattle and parked cars rock.
Was there a tsunami warning?
No tsunami evaluation was flagged for this earthquake.
Which towns are closest to the epicentre?
The closest is Choshi, 16.4 km WSW (population 58,431).
Are earthquakes normal in this area?
Yes. The largest earthquake recorded within 200 km since 1960 was magnitude 7.9 (47 km E of Ōarai, Japan, 2011), and 7 further events were recorded within 100 km in the last 30 days.
How do I get alerts for the next earthquake here?
Install the free SeismoWatch Android app, draw a box over this area, set a minimum magnitude, and turn alerts on.
About this page
Event data: U.S. Geological Survey (USGS), the European-Mediterranean Seismological Centre (EMSC) and, in Venezuela, FUNVISIS. Populated places and time zones: GeoNames (CC BY 4.0). Preliminary solutions are revised as more observations arrive.