May 1, 2023 at 07:15:00 JST
Northern Tokushima Prefecture · M3.4 · Shindo 2
徳島県北部
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 |
|---|---|---|---|
| 2 | Naka Town那賀町上那賀 | Tokushima | 26.3 km |
| 1 | Koyadaira, Mima City美馬市木屋平 | Tokushima | 7.8 km |
| 1 | Itano Town板野町大寺 | Tokushima | 28.6 km |
| 1 | Katsuura Town勝浦町久国 | Tokushima | 29.7 km |
| 1 | Sanuki Cityさぬき市寒川町 | 香川県 | 30.0 km |
| 1 | Higashikagawa City東かがわ市南野 | 香川県 | 30.3 km |
| 1 | Takamatsu City高松市香川町 | 香川県 | 30.9 km |
| 1 | Aizumi Town藍住町奥野 | Tokushima | 31.2 km |
| 1 | Naka Town那賀町和食 | Tokushima | 31.8 km |
| 1 | Naka Town那賀町延野 | Tokushima | 32.7 km |
| 1 | Ayagawa Town綾川町山田下 | 香川県 | 34.4 km |
| 1 | Tokushima City徳島市大和町 | Tokushima | 35.3 km |
| 1 | Marugame City丸亀市綾歌町 | 香川県 | 39.0 km |
| 1 | Mugi Town牟岐町中村 | Tokushima | 41.9 km |
| 1 | Naruto City鳴門市鳴門町 | Tokushima | 43.9 km |
| 1 | Kaiyo Town海陽町大里 | Tokushima | 46.5 km |
| 1 | Shodoshima Town小豆島町池田 | 香川県 | 53.3 km |
| 1 | 玉野市宇野 | Okayama | — |
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: May 1, 2023 at 07:18:23Received: July 31, 2026 at 00:25:40
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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 →