August 21, 2025 at 10:44:00 JST
Adjacent Sea of Niijima Island, Kozushima Island · M4.7 · Shindo 3
新島・神津島近海
Adjacent Sea of Niijima Island, Kozushima Island earthquake history →
Places with the strongest observed Shindo
These municipalities had the highest station readings in this report. Open a place to compare this earthquake with its local history.
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Shindo readings and epicentre
Each numbered marker is an actual station reading. The orange M marker shows the epicentre.
Observed Shindo by station
These are actual readings reported at JMA and partner stations, not estimates.
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| Shindo | Station | Prefecture | Distance from epicentre |
|---|---|---|---|
| 3 | 東京利島村東山 | Tokyo | 10.6 km |
| 3 | Niijima Village新島村大原 | Tokyo | 19.7 km |
| 2 | Niijima Village新島村本村 | Tokyo | 18.5 km |
| 2 | Izu伊豆大島町差木地 | Tokyo | 20.4 km |
| 2 | Izu伊豆大島町波浮港 | Tokyo | 21.4 km |
| 2 | Niijima Village新島村式根島 | Tokyo | 25.3 km |
| 2 | Higashiizu Town東伊豆町奈良本 | Shizuoka | 47.8 km |
| 1 | Izu伊豆大島町元町 | Tokyo | 28.0 km |
| 1 | Kouzushima Village神津島村役場 | Tokyo | 40.6 km |
| 1 | Kouzushima Village神津島村金長 | Tokyo | 42.2 km |
| 1 | Miyake Village三宅村神着 | Tokyo | 43.3 km |
| 1 | Higashiizu Town東伊豆町稲取 | Shizuoka | 44.6 km |
| 1 | Miyake Village三宅村阿古 | Tokyo | 47.2 km |
| 1 | Izu City伊豆市中伊豆グラウンド | Shizuoka | 62.2 km |
| 1 | Tateyama City館山市長須賀 | Chiba | 68.8 km |
| 1 | Yokohama Naka Ward横浜中区山手町 | Kanagawa | 106.8 km |
Report updates
Status, time and revision available in the stored report. Field-by-field differences may not be retained.
- Confirmed
Revision 1 · p2pquake
Sources and bulletins
Multiple source bulletins do not necessarily represent multiple corrections.
- P2PQUAKEIssued: August 21, 2025 at 10:47:48Received: July 31, 2026 at 00:19:38
- P2PQUAKEIssued: August 21, 2025 at 10:46:49Received: July 31, 2026 at 00:19:38
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Understand this earthquake report
Read Shindo, magnitude and JMA information in the right context.
A guide to event and issue times, hypocentre, depth, Shindo, tsunami information, preliminary reports and corrections.
Read guide →5 min readWhat does earthquake depth mean?A plain-language guide to hypocentre depth and why shallow and deep earthquakes can feel very different.
Read guide →5 min readMagnitude vs Shindo: what is the difference?Magnitude describes the size of an earthquake at its source; Shindo describes shaking at a place. Learn why they are not interchangeable.
Read guide →6 min readCan every earthquake cause a tsunami?What creates a tsunami, why magnitude alone is not enough and when to leave the coast immediately.
Read guide →