July 16, 2021 at 13:20:00 JST
Adjacent Sea of Hachijojima Island · M5.5 · Shindo 4
八丈島近海
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.
Scroll horizontally to see the full table.
| Shindo | Station | Prefecture | Distance from epicentre |
|---|---|---|---|
| 4 | Hachijo Town八丈町三根 | Tokyo | 37.8 km |
| 3 | Hachijo Town八丈町富士グランド | Tokyo | 38.4 km |
| 3 | Hachijo Town八丈町樫立 | Tokyo | 39.8 km |
| 1 | Mikurashima Village御蔵島村西川 | Tokyo | 78.7 km |
| 1 | Aogashima Village青ヶ島村 | Tokyo | 88.5 km |
| 1 | Miyake Village三宅村坪田 | Tokyo | 96.4 km |
| 1 | Miyake Village三宅村神着 | Tokyo | 103.0 km |
| 1 | Kouzushima Village神津島村金長 | Tokyo | 112.6 km |
| 1 | Kouzushima Village神津島村役場 | Tokyo | 114.8 km |
| 1 | Niijima Village新島村大原 | Tokyo | 128.8 km |
| 1 | Matsuzaki Town松崎町宮内 | Shizuoka | 181.2 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: July 16, 2021 at 13:24:03Received: July 31, 2026 at 00:28:43
- P2PQUAKEIssued: July 16, 2021 at 13:23:24Received: July 31, 2026 at 00:28:43
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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 →