USGS · August 21, 2026
Magnitude 5.4 earthquake — 148 km SSE of Tateyama, Japan
A magnitude 5.4 earthquake was recorded near 148 km SSE of Tateyama, Japan on Aug 21, 2026, 09:02 PM (local time at the epicentre — UTC+9), at a depth of about 61.7 km, according to USGS.
USGSFelt by 9 people · community intensity III (weak)Shaking IVPAGER GreenShallow (0–70 km)Reviewed by a seismologist
Updated 2026-09-04 18:16 UTC
The full record
- Magnitude
- M 5.4 · moment magnitude (W-phase)
- Location
- 148 km SSE of Tateyama, Japan
- Local time at the epicentre
- Aug 21, 2026, 09:02 PM — UTC+9
- Time (UTC)
- 2026-08-21 12:02 UTC
- Depth
- 61.7 km · Shallow (0–70 km)
- Coordinates
- 33.717, 140.380
- Felt reports
- Felt by 9 people · community intensity III (weak)
- Estimated shaking
- IV · Light
- PAGER impact alert
- Green — No casualties or significant damage expected.
- Tsunami
- No tsunami evaluation was flagged for this earthquake.
- Significance
- 451 / 1000 · notable event
- Solution quality
- 114 seismic stations used · 49° 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.
Estimated instrumental shaking IV (Light): Felt indoors by many; dishes and windows rattle and parked cars rock.
People who reported it described intensity III (Weak): Felt indoors; hanging objects swing, like a passing truck.
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 0 people live in towns within 30 km of the epicentre, and 9,484 within 100 km. Distances are from the epicentre to the town centre.
| Place | Distance | Population |
|---|---|---|
| Hachijō | 88.2 km SW | 7,211 |
| Miyake | 89.6 km WNW | 2,273 |
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
1 other event within 100 km in the last 30 days.
Be first to know about the next earthquake near 148 km SSE of Tateyama, Japan
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Frequently asked questions
How strong was the 148 km SSE of Tateyama, Japan earthquake?
Magnitude 5.4 (moment magnitude (W-phase)), at a depth of 61.7 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 21, 2026, 09:02 PM (local time at the epicentre — UTC+9). In universal time: 2026-08-21 12:02 UTC.
Was it felt?
Felt by 9 people · community intensity III (weak). 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 Hachijō, 88.2 km SW (population 7,211).
Are earthquakes normal in this area?
Yes. The largest earthquake recorded within 200 km since 1960 was magnitude 7.3 (206 km SSE of Wada, Japan, 1972), and 1 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.