August 4, 2021 at 15:08:00 JST
Off the Coast of Ibaraki Prefecture · M4.9 · 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.
Scroll horizontally to see the full table.
| Shindo | Station | Prefecture | Distance from epicentre |
|---|---|---|---|
| 1 | Hitachi City日立市助川小学校 | Ibaraki | 125.2 km |
| 1 | Hitachinaka Cityひたちなか市南神敷台 | Ibaraki | 125.8 km |
| 1 | Iwaki Cityいわき市錦町 | Fukushima | 127.7 km |
| 1 | 茨城鹿嶋市宮中 | Ibaraki | 128.3 km |
| 1 | Tokai Village東海村東海 | Ibaraki | 129.7 km |
| 1 | Hokota City鉾田市鉾田 | Ibaraki | 134.3 km |
| 1 | Hitachiota City常陸太田市金井町 | Ibaraki | 134.5 km |
| 1 | Itako City潮来市堀之内 | Ibaraki | 137.7 km |
| 1 | Mito City水戸市金町 | Ibaraki | 137.8 km |
| 1 | Mito City水戸市千波町 | Ibaraki | 139.4 km |
| 1 | Katori City香取市佐原平田 | Chiba | 142.1 km |
| 1 | Mito City水戸市内原町 | Ibaraki | 147.4 km |
| 1 | Tako Town多古町多古 | Chiba | 151.8 km |
| 1 | Ishioka City石岡市石岡 | Ibaraki | 154.2 km |
| 1 | Furudono Town古殿町松川新桑原 | Fukushima | 155.3 km |
| 1 | Kasama City笠間市石井 | Ibaraki | 158.3 km |
| 1 | Ishioka City石岡市柿岡 | Ibaraki | 162.8 km |
| 1 | Tsuchiura City土浦市常名 | Ibaraki | 164.2 km |
| 1 | Tamura City田村市大越町 | Fukushima | 170.5 km |
| 1 | Mashiko Town益子町益子 | Tochigi | 172.1 km |
| 1 | Tamakawa Village玉川村小高 | Fukushima | 174.2 km |
| 1 | Sukagawa City須賀川市八幡山 | Fukushima | 181.6 km |
| 1 | Shirakawa City白河市郭内 | Fukushima | 184.3 km |
| 1 | Shirakawa City白河市新白河 | Fukushima | 185.6 km |
| 1 | Nasushiobara City那須塩原市鍋掛 | Tochigi | 185.8 km |
| 1 | Chikusei City筑西市舟生 | Ibaraki | 185.9 km |
| 1 | Tenei Village天栄村下松本 | Fukushima | 189.1 km |
| 1 | Koriyama City郡山市朝日 | Fukushima | 190.6 km |
| 1 | Sukagawa City須賀川市岩瀬支所 | Fukushima | 190.7 km |
| 1 | Otama Village大玉村南小屋 | Fukushima | 204.0 km |
| 1 | Konan, Koriyama City郡山市湖南町 | Fukushima | 206.7 km |
| 1 | Fukushima City福島市松木町 | Fukushima | 211.5 km |
| 1 | Iwanuma City岩沼市桜 | Miyagi | 223.5 km |
| 1 | Numata City沼田市白沢町 | Gunma | 259.4 km |
| 1 | Shibukawa City渋川市赤城町 | Gunma | 266.7 km |
| 1 | Murayama City村山市中央 | Yamagata | 281.3 km |
| 1 | 猪苗代町千代田 | Fukushima | — |
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 4, 2021 at 15:12:00Received: July 31, 2026 at 00:28:38
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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 →