August 20, 2020 at 09:28:00 JST
Off the east Coast of Chiba Prefecture · M4.1 · Shindo 2
千葉県東方沖
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 |
|---|---|---|---|
| 2 | Choshi City銚子市小畑新町 | Chiba | 13.0 km |
| 2 | Choshi City銚子市川口町 | Chiba | 13.6 km |
| 2 | Choshi City銚子市若宮町 | Chiba | 16.0 km |
| 2 | Kamisu City神栖市波崎 | Ibaraki | 18.4 km |
| 2 | Hokota City鉾田市汲上 | Ibaraki | 59.0 km |
| 1 | Asahi City旭市萩園 | Chiba | 26.3 km |
| 1 | Asahi City旭市高生 | Chiba | 28.2 km |
| 1 | Asahi City旭市ニ | Chiba | 31.8 km |
| 1 | Asahi City旭市南堀之内 | Chiba | 35.2 km |
| 1 | Kamisu City神栖市溝口 | Ibaraki | 37.3 km |
| 1 | Sosa City匝瑳市今泉 | Chiba | 39.2 km |
| 1 | Katori City香取市仁良 | Chiba | 39.6 km |
| 1 | 茨城鹿嶋市鉢形 | Ibaraki | 43.5 km |
| 1 | 茨城鹿嶋市宮中 | Ibaraki | 45.6 km |
| 1 | Sammu City山武市蓮沼ハ | Chiba | 46.6 km |
| 1 | Itako City潮来市辻 | Ibaraki | 48.5 km |
| 1 | Katori City香取市役所 | Chiba | 50.3 km |
| 1 | Itako City潮来市堀之内 | Ibaraki | 52.0 km |
| 1 | Shibayama Town芝山町小池 | Chiba | 53.4 km |
| 1 | Narita City成田市松子 | Chiba | 54.4 km |
| 1 | Inashiki City稲敷市結佐 | Ibaraki | 55.1 km |
| 1 | Namegata City行方市麻生 | Ibaraki | 56.2 km |
| 1 | Inashiki City稲敷市須賀津 | Ibaraki | 61.1 km |
| 1 | Togane City東金市日吉台 | Chiba | 61.5 km |
| 1 | Hokota City鉾田市鉾田 | Ibaraki | 67.0 km |
| 1 | Inashiki City稲敷市江戸崎甲 | Ibaraki | 67.4 km |
| 1 | Inashiki City稲敷市伊佐津 | Ibaraki | 68.3 km |
| 1 | Namegata City行方市玉造 | Ibaraki | 68.6 km |
| 1 | Chonan Town長南町総合グラウンド | Chiba | 77.7 km |
| 1 | Omitama City小美玉市上玉里 | Ibaraki | 78.4 km |
| 1 | Hitachinaka Cityひたちなか市南神敷台 | Ibaraki | 80.6 km |
| 1 | Omitama City小美玉市堅倉 | Ibaraki | 83.8 km |
| 1 | Ishioka City石岡市石岡 | Ibaraki | 84.0 km |
| 1 | Mito City水戸市栗崎町 | Ibaraki | 84.1 km |
| 1 | Tsuchiura City土浦市常名 | Ibaraki | 85.7 km |
| 1 | Mito City水戸市千波町 | Ibaraki | 89.4 km |
| 1 | Tsuchiura City土浦市藤沢 | Ibaraki | 89.6 km |
| 1 | Kasama City笠間市下郷 | Ibaraki | 92.4 km |
| 1 | Ishioka City石岡市柿岡 | Ibaraki | 94.1 km |
| 1 | Kasama City笠間市石井 | Ibaraki | 102.7 km |
| 1 | Hitachi City日立市助川小学校 | Ibaraki | 103.7 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 20, 2020 at 09:32:00Received: July 31, 2026 at 00:30:40
- P2PQUAKEIssued: August 20, 2020 at 09:32:00Received: July 31, 2026 at 00:30:40
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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 →