April 21, 2021 at 21:29:00 JST
Adjacent Sea of Izu-Oshima Island · M4.3 · Shindo 3
伊豆大島近海
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 |
|---|---|---|---|
| 3 | Higashiizu Town東伊豆町奈良本 | Shizuoka | 13.9 km |
| 2 | Izu伊豆大島町元町 | Tokyo | 15.2 km |
| 1 | Higashiizu Town東伊豆町稲取 | Shizuoka | 15.0 km |
| 1 | Kawazu Town河津町田中 | Shizuoka | 19.7 km |
| 1 | Izu伊豆大島町差木地 | Tokyo | 23.6 km |
| 1 | Izu City伊豆市中伊豆グラウンド | Shizuoka | 24.8 km |
| 1 | Izu伊豆大島町波浮港 | Tokyo | 25.1 km |
| 1 | Shimoda City下田市加増野 | Shizuoka | 31.0 km |
| 1 | 東京利島村東山 | Tokyo | 31.7 km |
| 1 | Izunokuni City伊豆の国市長岡 | Shizuoka | 35.5 km |
| 1 | Nishiizu Town西伊豆町宇久須 | Shizuoka | 38.8 km |
| 1 | Yugawara Town湯河原町中央 | Kanagawa | 39.5 km |
| 1 | Miura City三浦市城山町 | Kanagawa | 53.8 km |
| 1 | Tateyama City館山市長須賀 | Chiba | 64.2 km |
| 1 | Minamiboso City南房総市富浦町青木 | Chiba | 64.3 km |
| 1 | Yokohama Kanazawa Ward横浜金沢区白帆 | Kanagawa | 76.3 km |
| 1 | Yokohama Naka Ward横浜中区山手町 | Kanagawa | 82.2 km |
| 1 | 国分寺市本多 | Tokyo | — |
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: April 21, 2021 at 21:33:44Received: July 31, 2026 at 00:29:04
- P2PQUAKEIssued: April 21, 2021 at 21:32:20Received: July 31, 2026 at 00:29:04
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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 →