March 9, 2021 at 18:11:00 JST
Off the Coast of Ibaraki Prefecture · M4.0 · Shindo 1
茨城県沖
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.
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| Shindo | Station | Prefecture | Distance from epicentre |
|---|---|---|---|
| 1 | Hitachinaka Cityひたちなか市南神敷台 | Ibaraki | 47.9 km |
| 1 | 茨城鹿嶋市鉢形 | Ibaraki | 48.3 km |
| 1 | 茨城鹿嶋市宮中 | Ibaraki | 48.9 km |
| 1 | Hokota City鉾田市汲上 | Ibaraki | 49.0 km |
| 1 | Mito City水戸市栗崎町 | Ibaraki | 54.7 km |
| 1 | Tokai Village東海村東海 | Ibaraki | 56.2 km |
| 1 | Hitachi City日立市助川小学校 | Ibaraki | 59.2 km |
| 1 | Hitachi City日立市役所 | Ibaraki | 60.0 km |
| 1 | Mito City水戸市金町 | Ibaraki | 60.2 km |
| 1 | Mito City水戸市千波町 | Ibaraki | 61.4 km |
| 1 | Naka City那珂市福田 | Ibaraki | 61.9 km |
| 1 | Takahagi City高萩市安良川 | Ibaraki | 66.5 km |
| 1 | Mito City水戸市内原町 | Ibaraki | 68.8 km |
| 1 | Shirosato Town城里町石塚 | Ibaraki | 71.7 km |
| 1 | Hitachiomiya City常陸大宮市北町 | Ibaraki | 73.1 km |
| 1 | Kasumigaura Cityかすみがうら市上土田 | Ibaraki | 77.6 km |
| 1 | Tsuchiura City土浦市常名 | Ibaraki | 82.6 km |
| 1 | Hitachiomiya City常陸大宮市上小瀬 | Ibaraki | 83.5 km |
| 1 | Chikusei City筑西市門井 | Ibaraki | 97.2 km |
| 1 | 城里町小勝 | Ibaraki | — |
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: March 9, 2021 at 18:15:15Received: July 31, 2026 at 00:29:24
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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 →