July 4, 2021 at 02:20:00 JST
Off the Coast of Urakawa · M4.1 · Shindo 1
浦河沖
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 |
|---|---|---|---|
| 1 | Urakawa Town浦河町潮見 | Hokkaido | 37.0 km |
| 1 | Urakawa Town浦河町築地 | Hokkaido | 37.4 km |
| 1 | Shinhidaka Town新ひだか町三石旭町 | Hokkaido | 39.2 km |
| 1 | Samani Town様似町栄町 | Hokkaido | 44.5 km |
| 1 | Urakawa Town浦河町野深 | Hokkaido | 47.3 km |
| 1 | Shinhidaka Town新ひだか町静内御幸町 | Hokkaido | 50.0 km |
| 1 | Shinhidaka Town新ひだか町静内山手町 | Hokkaido | 50.7 km |
| 1 | Niikappu Town新冠町北星町 | Hokkaido | 53.2 km |
| 1 | Atsuma Town厚真町鹿沼 | Hokkaido | 93.5 km |
| 1 | Hakodate City函館市新浜町 | Hokkaido | 113.2 km |
| 1 | Higashidori Village東通村砂子又沢内 | Aomori | 119.4 km |
| 1 | Abira Town安平町追分柏が丘 | Hokkaido | 121.4 km |
| 1 | Mutsu Cityむつ市大畑町中島 | Aomori | 123.4 km |
| 1 | Hakodate City函館市泊町 | Hokkaido | 126.2 km |
| 1 | Hakodate City函館市川汲町 | Hokkaido | 127.0 km |
| 1 | 胆振伊達市大滝区本町 | Hokkaido | 145.0 km |
| 1 | Ebetsu City江別市緑町 | Hokkaido | 156.4 km |
| 1 | Hashikami Town階上町道仏 | Aomori | 177.2 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 4, 2021 at 02:23:16Received: July 31, 2026 at 00:28:45
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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 →