Okayama earthquake and Shindo history
岡山県
Earthquakes for which stations associated with Okayama reported an actual Shindo observation.
Latest observation: Sep 21, 2026, 08:49 AM JSTLATEST LOCAL OBSERVATION
Latest earthquake observed in Okayama
震度2
Highest Shindo observed in OkayamaSource region: Northern Okayama PrefectureM3.3
Local seismic profile
Since Jan 13, 2015, stations associated with Okayama have reported a local reading for 352 earthquakes. Shindo 1 was most common, while the highest local level, Shindo 5+, was recorded 1 times.
Latest observationSep 21, 2026
Highest local Shindo5+
Observed events352Jan 13, 2015–Sep 21, 2026
Associated observation stations105JMA
Latest observation: Sep 21, 2026
Recent observed earthquakes
Earthquakes for which stations associated with Okayama reported an actual Shindo observation.
震度2
Sep 21, 2026, 08:49 AM JSTNorthern Okayama Prefecture
震度1M3.3 · 10 km · 52 km
Aug 12, 2026, 11:57 AM JSTCentral Tottori Prefecture
震度3M3.1 · 10 km · 61 km
Jul 28, 2026, 04:27 PM JSTKumamoto Region, Kumamoto Prefecture
震度1M7.1 · 10 km · 383 km
Jul 10, 2026, 03:16 PM JSTEastern Shimane Prefecture
震度1M3.4 · 10 km · 70 km
Jul 9, 2026, 09:59 PM JSTOff the south Coast of Wakayama Prefecture
震度1M4.7 · 10 km · 203 km
Jun 16, 2026, 07:22 AM JSTNorthern Hiroshima Prefecture
M3.3 · 10 km · 52 km
105 Associated observation stations
Open this place on the mapStations and strongest local observations
The map combines stations assigned to this place with earthquakes that produced its strongest local readings.
Jan 13, 2015 to Sep 21, 2026 · 352 records
Observation history
This history counts earthquakes observed at stations in the place, not earthquakes whose epicentre lies inside its boundary. Counts can change as stations are updated and older or corrected observations are added.
First observation: Jan 13, 2015
All yearsObserved events by year
Choose a year to update the event history and local Shindo distribution.
All years
All ShindoShindo observed in this place
The highest reading from stations in this place, not the maximum Shindo of the whole event.
Latest observation: Sep 21, 2026
Recent observed earthquakes
352 observed earthquakes
- 震度2Sep 21, 2026, 08:49 JSTNorthern Okayama PrefectureShindo in this place: 2 · Event maximum Shindo: 2M3.310 km
- 震度1Aug 12, 2026, 11:57 JSTCentral Tottori PrefectureShindo in this place: 1 · Event maximum Shindo: 1M3.110 km
- 震度3Jul 28, 2026, 16:27 JSTKumamoto Region, Kumamoto PrefectureShindo in this place: 3 · Event maximum Shindo: 7M7.110 km
- 震度1Jul 10, 2026, 15:16 JSTEastern Shimane PrefectureShindo in this place: 1 · Event maximum Shindo: 2M3.410 km
- 震度1Jul 9, 2026, 21:59 JSTOff the south Coast of Wakayama PrefectureShindo in this place: 1 · Event maximum Shindo: 3M4.710 km
- 震度1Jun 16, 2026, 07:22 JSTNorthern Hiroshima PrefectureShindo in this place: 1 · Event maximum Shindo: 2M3.310 km
- 震度1May 7, 2026, 04:30 JSTEastern Kochi PrefectureShindo in this place: 1 · Event maximum Shindo: 2M3.830 km
- 震度2May 2, 2026, 18:28 JSTNara PrefectureShindo in this place: 2 · Event maximum Shindo: 4M5.770 km
Regional context
A change in the number of observations cannot by itself predict a larger earthquake.
Local seismic profile
Where the shaking usually comes from
Source regions of earthquakes observed here, ordered by the number of reports.
5+
Central Tottori Prefecture鳥取県中部
1384
Eastern Shimane Prefecture島根県東部
323
Northern Okayama Prefecture岡山県北部
134
Western Shimane Prefecture島根県西部
123
Northern Tokushima Prefecture徳島県北部
103
Kiisuido Strait紀伊水道
10Local seismic profile
Recent observations in long-term context
A change in the number of observations cannot by itself predict a larger earthquake.
Reference model · not a forecast J-SHIS (NIED) · A33000
J-SHIS / NIEDEarthquake scenarios affecting this place
Official J-SHIS models ranked for their potential impact on this prefecture.
#1 means the model ranks highest in the J-SHIS result for this place under the same settings. It is not a ranking of which earthquake will happen next.
Magnitude on a card describes the size of the whole earthquake model, not the Shindo expected here. Local shaking also depends on distance, depth and ground conditions.
#1Subduction-zone earthquakeLarge Earthquakes along the Nankai Trough南海トラフ沿いで発生する大地震
Modelled magnitude: M8.2–9.1
Read about this model #2Major active faultMedian Tectonic Line (MTL) fault zone (FROM Kitan-kaikyo - Naruto-Kaikyo segment TO Ishizuchi-sanmyaku-hokuen western segment)中央構造線断層帯（紀淡海峡－鳴門海峡区間～石鎚山脈北縁西部区間が同時に活動）Modelled magnitude: M7.7
Read about this model #3Major active faultMedian Tectonic Line (MTL) fault zone (FROM Gojoya segment TO Sanuki-sanmyaku-nanen western segment)中央構造線断層帯（五条谷区間～讃岐山脈南縁西部区間が同時に活動）Modelled magnitude: M7.7
Read about this model #4Major active faultMedian Tectonic Line (MTL) fault zone (FROM Gojoya segment TO Ishizuchi-sanmyaku-hokuen western segment)中央構造線断層帯（五条谷区間～石鎚山脈北縁西部区間が同時に活動）Modelled magnitude: M7.7
Read about this model #5Major active faultMedian Tectonic Line (MTL) fault zone (FROM Negoro segment TO Sanuki-sanmyaku-nanen western segment)中央構造線断層帯（根来区間～讃岐山脈南縁西部区間が同時に活動）Modelled magnitude: M7.7
Read about this model #6Major active faultMedian Tectonic Line (MTL) fault zone (FROM Kitan-kaikyo - Naruto-Kaikyo segment TO Sanuki-sanmyaku-nanen western segment)中央構造線断層帯（紀淡海峡－鳴門海峡区間～讃岐山脈南縁西部区間が同時に活動）Modelled magnitude: M7.6
Read about this model #7Major active faultMedian Tectonic Line (MTL) fault zone (FROM Sanuki-sanmyaku-nanen eastern segment TO Ishizuchi-sanmyaku-hokuen western segment)中央構造線断層帯（讃岐山脈南縁東部区間～石鎚山脈北縁西部区間が同時に活動）Modelled magnitude: M7.6
Read about this model #8Major active faultMedian Tectonic Line (MTL) fault zone (FROM Sanuki-sanmyaku-nanen eastern segment TO Sanuki-sanmyaku-nanen western segment)中央構造線断層帯（讃岐山脈南縁東部区間～讃岐山脈南縁西部区間が同時に活動）Modelled magnitude: M7.5
Read about this model #9Major active faultMedian Tectonic Line (MTL) fault zone (FROM Sanuki-sanmyaku-nanen western segment TO Ishizuchi-sanmyaku-hokuen western segment)中央構造線断層帯（讃岐山脈南縁西部区間～石鎚山脈北縁西部区間が同時に活動）Modelled magnitude: M7.5
Read about this model #10Major active faultMedian Tectonic Line (MTL) fault zone (FROM Negoro segment TO Ishizuchi-sanmyaku-hokuen western segment)中央構造線断層帯（根来区間～石鎚山脈北縁西部区間が同時に活動）Modelled magnitude: M7.6
Read about this model #11Major active faultMedian Tectonic Line (MTL) fault zone (FROM Gojoya segment TO Sanuki-sanmyaku-nanen eastern segment)中央構造線断層帯（五条谷区間～讃岐山脈南縁東部区間が同時に活動）Modelled magnitude: M7.6
Read about this model #12Major active faultMedian Tectonic Line (MTL) fault zone (FROM Negoro segment TO Sanuki-sanmyaku-nanen eastern segment)中央構造線断層帯（根来区間～讃岐山脈南縁東部区間が同時に活動）Modelled magnitude: M7.5
Read about this model #13Major active faultChojagahara-Yoshii fault長者ヶ原－芳井断層Modelled magnitude: M6.8
Read about this model #14Major active faultMedian Tectonic Line (MTL) fault zone (FROM Kitan-kaikyo - Naruto-Kaikyo segment TO Sanuki-sanmyaku-nanen eastern segment)中央構造線断層帯（紀淡海峡－鳴門海峡区間～讃岐山脈南縁東部区間が同時に活動）Modelled magnitude: M7.4
Read about this model #15Major active faultYamasaki fault zone (Nagisen fault zone)山崎断層帯（那岐山断層帯）Modelled magnitude: M6.8
Read about this model #16Major active faultMedian Tectonic Line (MTL) fault zone (Sanuki-sanmyaku-nanen western segment)中央構造線断層帯（讃岐山脈南縁西部区間）Modelled magnitude: M7.3
Read about this model #17Major active faultYamasaki fault zone (Main part/Northwestern segment)山崎断層帯（主部北西部区間）Modelled magnitude: M7.1
Read about this model #18Major active faultYamasaki fault zone (Main part Northwestern/Southeastern segment)山崎断層帯（主部北西部区間と主部南東部区間が同時に活動）Modelled magnitude: M7.3
Read about this model #19Other active faultFukuyama fault zone福山断層帯Modelled magnitude: M6.6
Read about this model #20Major active faultMedian Tectonic Line (MTL) fault zone (Sanuki-sanmyaku-nanen eastern segment)中央構造線断層帯（讃岐山脈南縁東部区間）Modelled magnitude: M7.1
Read about this model #21Major active faultNichinan-ko fault日南湖断層Modelled magnitude: M6.4
Read about this model #22Major active faultKamihougunji fault上法軍寺断層Modelled magnitude: M6.4
Read about this model #23Major active faultMedian Tectonic Line (MTL) fault zone (All segment)中央構造線断層帯（全体が同時に活動）Modelled magnitude: M7.9
Read about this model #24Major active faultMedian Tectonic Line (MTL) fault zone (FROM Gojoya segment TO Houyo-kaikyo - Yufuin segment)中央構造線断層帯（五条谷区間～豊予海峡－由布院区間が同時に活動）Modelled magnitude: M7.9
Read about this model #25Major active faultMedian Tectonic Line (MTL) fault zone (FROM Kongo-sanchi-toen segment TO Ishizuchi-sanmyaku-hokuen western segment)中央構造線断層帯（金剛山地東縁区間～石鎚山脈北縁西部区間が同時に活動）Modelled magnitude: M7.8
Read about this model #26Major active faultMedian Tectonic Line (MTL) fault zone (FROM Kongo-sanchi-toen segment TO Iyonada segment)中央構造線断層帯（金剛山地東縁区間～伊予灘区間が同時に活動）Modelled magnitude: M7.8
Read about this model #27Major active faultMedian Tectonic Line (MTL) fault zone (FROM Gojoya segment TO Iyonada segment)中央構造線断層帯（五条谷区間～伊予灘区間が同時に活動）Modelled magnitude: M7.8
Read about this model #28Major active faultMedian Tectonic Line (MTL) fault zone (FROM Negoro segment TO Iyonada segment)中央構造線断層帯（根来区間～伊予灘区間が同時に活動）Modelled magnitude: M7.8
Read about this model #29Major active faultMedian Tectonic Line (MTL) fault zone (FROM Kitan-kaikyo - Naruto-Kaikyo segment TO Houyo-kaikyo - Yufuin segment)中央構造線断層帯（紀淡海峡－鳴門海峡区間～豊予海峡－由布院区間が同時に活動）Modelled magnitude: M7.8
Read about this model #30Major active faultMedian Tectonic Line (MTL) fault zone (FROM Negoro segment TO Houyo-kaikyo - Yufuin segment)中央構造線断層帯（根来区間～豊予海峡－由布院区間が同時に活動）Modelled magnitude: M7.8
Read about this model #31Major active faultMedian Tectonic Line (MTL) fault zone (FROM Kongo-sanchi-toen segment TO Sanuki-sanmyaku-nanen western segment)中央構造線断層帯（金剛山地東縁区間～讃岐山脈南縁西部区間が同時に活動）Modelled magnitude: M7.7
Read about this model #32Major active faultMedian Tectonic Line (MTL) fault zone (FROM Kongo-sanchi-toen segment TO Ishizuchi-sanmyaku-hokuen segment)中央構造線断層帯（金剛山地東縁区間～石鎚山脈北縁区間が同時に活動）Modelled magnitude: M7.7
Read about this model #33Major active faultMedian Tectonic Line (MTL) fault zone (FROM Gojoya segment TO Ishizuchi-sanmyaku-hokuen segment)中央構造線断層帯（五条谷区間～石鎚山脈北縁区間が同時に活動）Modelled magnitude: M7.7
Read about this model #34Major active faultMedian Tectonic Line (MTL) fault zone (FROM Negoro segment TO Ishizuchi-sanmyaku-hokuen segment)中央構造線断層帯（根来区間～石鎚山脈北縁区間が同時に活動）Modelled magnitude: M7.7
Read about this model #35Major active faultMedian Tectonic Line (MTL) fault zone (FROM Kitan-kaikyo - Naruto-Kaikyo segment TO Ishizuchi-sanmyaku-hokuen segment)中央構造線断層帯（紀淡海峡－鳴門海峡区間～石鎚山脈北縁区間が同時に活動）Modelled magnitude: M7.7
Read about this model #36Major active faultMedian Tectonic Line (MTL) fault zone (FROM Kitan-kaikyo - Naruto-Kaikyo segment TO Iyonada segment)中央構造線断層帯（紀淡海峡－鳴門海峡区間～伊予灘区間が同時に活動）Modelled magnitude: M7.7
Read about this model #37Major active faultMedian Tectonic Line (MTL) fault zone (FROM Sanuki-sanmyaku-nanen eastern segment TO Iyonada segment)中央構造線断層帯（讃岐山脈南縁東部区間～伊予灘区間が同時に活動）Modelled magnitude: M7.7
Read about this model #38Major active faultMedian Tectonic Line (MTL) fault zone (FROM Sanuki-sanmyaku-nanen eastern segment TO Houyo-kaikyo - Yufuin segment)中央構造線断層帯（讃岐山脈南縁東部区間～豊予海峡－由布院区間が同時に活動）Modelled magnitude: M7.7
Read about this model #39Major active faultMedian Tectonic Line (MTL) fault zone (FROM Sanuki-sanmyaku-nanen western segment TO Iyonada segment)中央構造線断層帯（讃岐山脈南縁西部区間～伊予灘区間が同時に活動）Modelled magnitude: M7.7
Read about this model #40Major active faultMedian Tectonic Line (MTL) fault zone (FROM Sanuki-sanmyaku-nanen western segment TO Houyo-kaikyo - Yufuin segment)中央構造線断層帯（讃岐山脈南縁西部区間～豊予海峡－由布院区間が同時に活動）Modelled magnitude: M7.7
Read about this model #41Major active faultMedian Tectonic Line (MTL) fault zone (FROM Sanuki-sanmyaku-nanen eastern segment TO Ishizuchi-sanmyaku-hokuen segment)中央構造線断層帯（讃岐山脈南縁東部区間～石鎚山脈北縁区間が同時に活動）Modelled magnitude: M7.6
Read about this model #42Major active faultMedian Tectonic Line (MTL) fault zone (FROM Kongo-sanchi-toen segment TO Sanuki-sanmyaku-nanen eastern segment)中央構造線断層帯（金剛山地東縁区間～讃岐山脈南縁東部区間が同時に活動）Modelled magnitude: M7.6
Read about this model #43Major active faultMedian Tectonic Line (MTL) fault zone (FROM Sanuki-sanmyaku-nanen western segment TO Ishizuchi-sanmyaku-hokuen segment)中央構造線断層帯（讃岐山脈南縁西部区間～石鎚山脈北縁区間が同時に活動）Modelled magnitude: M7.5
Read about this model #44Major active faultMedian Tectonic Line (MTL) fault zone (FROM Ishizuchi-sanmyaku-hokuen segment TO Houyo-kaikyo - Yufuin segment)中央構造線断層帯（石鎚山脈北縁区間～豊予海峡－由布院区間が同時に活動）Modelled magnitude: M7.7
Read about this model #45Major active faultMedian Tectonic Line (MTL) fault zone (FROM Ishizuchi-sanmyaku-hokuen segment TO Iyonada segment)中央構造線断層帯（石鎚山脈北縁区間～伊予灘区間が同時に活動）Modelled magnitude: M7.6
Read about this model #46Major active faultMedian Tectonic Line (MTL) fault zone (FROM Kongo-sanchi-toen segment TO Kitan-kaikyo - Naruto-Kaikyo segment)中央構造線断層帯（金剛山地東縁区間～紀淡海峡－鳴門海峡区間が同時に活動）Modelled magnitude: M7.5
Read about this model #47Major active faultMedian Tectonic Line (MTL) fault zone (FROM Ishizuchi-sanmyaku-hokuen western segment TO Houyo-kaikyo - Yufuin segment)中央構造線断層帯（石鎚山脈北縁西部区間～豊予海峡－由布院区間が同時に活動）Modelled magnitude: M7.6
Read about this model #48Major active faultMedian Tectonic Line (MTL) fault zone (FROM Ishizuchi-sanmyaku-hokuen western segment TO Iyonada segment)中央構造線断層帯（石鎚山脈北縁西部区間～伊予灘区間が同時に活動）Modelled magnitude: M7.5
Read about this model #49Major active faultMedian Tectonic Line (MTL) fault zone (FROM Ishizuchi-sanmyaku-hokuen segment TO Ishizuchi-sanmyaku-hokuen western segment)中央構造線断層帯（石鎚山脈北縁区間～石鎚山脈北縁西部区間が同時に活動）Modelled magnitude: M7.2
Read about this modelJ-SHIS 2020 model, 30-year period and Shindo 6-lower threshold. This is not a prediction of a particular earthquake. Source: J-SHIS (NIED); processed for presentation by JISHINDESU.
Local seismic profile
Municipalities in this prefecture
Municipalities with an observation history, ordered alphabetically. Counts depend on station coverage and the available data period; they are not a risk ranking.
Akaiwa City赤磐市
78 Observed eventsShindo 4
→Asakuchi City浅口市
89 Observed eventsShindo 4
→Bizen City備前市
51 Observed eventsShindo 4
→Hayashima Town早島町
54 Observed eventsShindo 4
→Ibara City井原市
46 Observed eventsShindo 4
→Kagamino Town鏡野町
163 Observed eventsShindo 5+
→Kasaoka City笠岡市
82 Observed eventsShindo 4
→Kibichuo Town吉備中央町
28 Observed eventsShindo 3
→Kumenan Town久米南町
18 Observed eventsShindo 3
→Kurashiki City倉敷市
126 Observed eventsShindo 4
→Maniwa City真庭市
242 Observed eventsShindo 5+
→Mimasaka City美作市
39 Observed eventsShindo 3
→Nagi Town奈義町
25 Observed eventsShindo 4
→Niimi City新見市
90 Observed eventsShindo 4
→Nishiawakura Village西粟倉村
20 Observed eventsShindo 3
→Okayama Higashi Ward岡山市東区
63 Observed eventsShindo 3
→Okayama Kita Ward岡山市北区
109 Observed eventsShindo 4
→Okayama Minami Ward岡山市南区
83 Observed eventsShindo 4
→Okayama Naka Ward岡山市中区
51 Observed eventsShindo 3
→Satosho Town里庄町
103 Observed eventsShindo 4
→Setouchi City瀬戸内市
80 Observed eventsShindo 3
→Shinjo Village新庄村
46 Observed eventsShindo 4
→Shoo Town勝央町
32 Observed eventsShindo 2
→Soja City総社市
62 Observed eventsShindo 3
→Takahashi City高梁市
65 Observed eventsShindo 3
→Tamano City玉野市
11 Observed eventsShindo 3
→Tsuyama City津山市
82 Observed eventsShindo 4
→Wake Town和気町
87 Observed eventsShindo 4
→Yakage Town矢掛町
78 Observed eventsShindo 4
→Understand local Shindo in context
Guides to this place’s history, seismic intensity and notification tools.
8 min readJapan’s Shindo Scale: Earthquake Intensity Levels 0–7
Learn what Japan’s Shindo earthquake intensity scale measures, what levels 0, 5 Lower, 5 Upper and 7 mean, and why Shindo is different from magnitude.
Read guide →10 min readHow to use the JISHINDESU interactive mapA guide to the redesigned map panel: adding and switching places, ten years of history, filters, local Shindo readings, sharing and notifications.
Read guide →6 min readAre earthquakes becoming more frequent in Japan?How to compare earthquake counts fairly—and why a few active days do not prove a lasting increase.
Read guide →4 min readAway from home? Monitor earthquakes in your Japanese townUse home as the reference point and receive notifications without an account when a station within the selected radius reports your chosen Shindo level.
Read guide →