September 4, 2020 at 23:20:00 JST
Adjacent Sea of Ishigakijima Island · M4.2 · Shindo 1
石垣島近海
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.
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 |
|---|---|---|---|
| 1 | 石垣市平久保 | Okinawa | 15.5 km |
| 1 | 石垣市伊原間 | Okinawa | 24.3 km |
| 1 | Tarama Village多良間村塩川 | Okinawa | 31.5 km |
| 1 | 石垣市登野城 | Okinawa | 46.8 km |
| 1 | 石垣市新栄町 | Okinawa | 47.2 km |
| 1 | 竹富町船浮 | Okinawa | 78.9 km |
| 1 | Miyakojima City宮古島市伊良部前里添 | Okinawa | 81.6 km |
| 1 | 石垣市美崎町 | Okinawa | — |
| 1 | 竹富町上原 | Okinawa | — |
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: September 4, 2020 at 23:23:00Received: July 31, 2026 at 00:30:39
- P2PQUAKEIssued: September 4, 2020 at 23:23:00Received: July 31, 2026 at 00:30:39
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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 →