October 10, 2021 at 14:09:00 JST
Off the Coast of Iwate Prefecture · M4.0 · Shindo 2
岩手県沖
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 |
|---|---|---|---|
| 2 | Hashikami Town階上町道仏 | Aomori | 76.5 km |
| 1 | Miyako City宮古市田老 | Iwate | 40.4 km |
| 1 | Yamada Town山田町大沢 | Iwate | 63.3 km |
| 1 | Yamada Town山田町八幡町 | Iwate | 66.2 km |
| 1 | Kunohe Village九戸村伊保内 | Iwate | 78.6 km |
| 1 | Karumai Town軽米町軽米 | Iwate | 80.4 km |
| 1 | Hachinohe City八戸市南郷 | Aomori | 85.6 km |
| 1 | Hachinohe City八戸市湊町 | Aomori | 88.5 km |
| 1 | Kamaishi City釜石市中妻町 | Iwate | 89.4 km |
| 1 | 青森南部町苫米地 | Aomori | 94.1 km |
| 1 | Sannohe Town三戸町在府小路町 | Aomori | 98.1 km |
| 1 | Sumita Town住田町世田米 | Iwate | 113.8 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: October 10, 2021 at 14:11:59Received: July 31, 2026 at 00:28:22
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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 →