August 9, 2021 at 04:38:00 JST
Off the Coast of Tomakomai · M3.6 · Shindo 1
苫小牧沖
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.
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 | Hakodate City函館市新浜町 | Hokkaido | 50.1 km |
| 1 | Atsuma Town厚真町鹿沼 | Hokkaido | 71.6 km |
| 1 | Noboribetsu City登別市鉱山 | Hokkaido | 75.9 km |
| 1 | 新千歳空港 | Hokkaido | 87.0 km |
| 1 | Chitose City千歳市若草 | Hokkaido | 88.1 km |
| 1 | Chitose City千歳市北栄 | Hokkaido | 92.0 km |
| 1 | Eniwa City恵庭市京町 | Hokkaido | 98.2 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: August 9, 2021 at 04:41:25Received: July 31, 2026 at 00:28:37
Follow the next earthquake from the places that matter
Save important places, compare locally observed Shindo and receive notifications after station readings are confirmed.
- ✓Saved places
- ✓Local Shindo
- ✓Observed alerts
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 →