Sanjo City earthquake and Shindo history
三条市
Earthquakes for which stations associated with Sanjo City reported an actual Shindo observation.
Latest observation: Sep 3, 2026, 10:34 PM JSTLocal seismic profile
Since Feb 17, 2015, stations associated with Sanjo City have reported a local reading for 158 earthquakes. Shindo 1 was most common, while the highest local level, Shindo 5+, was recorded 1 times.
Latest observationSep 3, 2026
Highest local Shindo5+
Observed events158Feb 17, 2015–Sep 3, 2026
Associated observation stations3JMA
Latest observation: Sep 3, 2026
Recent observed earthquakes
No local observation in the last 7 days. Latest observation: Sep 3, 2026
震度1
Sep 3, 2026, 10:34 PM JSTAizu, Fukushima Prefecture
震度2M3.5 · 10 km · 53 km
Aug 23, 2026, 02:00 AM JSTSouthern Ibaraki Prefecture
震度1M5.9 · 70 km · 204 km
Jun 26, 2026, 12:46 PM JSTNortheastern Chiba Prefecture
震度2M5.8 · 50 km · 256 km
Jun 25, 2026, 07:30 AM JSTOff the Coast of Iwate Prefecture
震度2M6.9 · 50 km · 408 km
Jun 16, 2026, 07:46 PM JSTSouthern Ibaraki Prefecture
震度1M5.5 · 50 km · 186 km
Jun 1, 2026, 05:54 AM JSTOff the Coast of Joetsu and Chuetsu, Niigata Prefecture
M4.6 · 10 km · 77 km
3 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.
Feb 17, 2015 to Sep 3, 2026 · 158 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: Feb 17, 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 3, 2026
Recent observed earthquakes
158 observed earthquakes
- 震度1Sep 3, 2026, 22:34 JSTAizu, Fukushima PrefectureShindo in this place: 1 · Event maximum Shindo: 2M3.510 km
- 震度2Aug 23, 2026, 02:00 JSTSouthern Ibaraki PrefectureShindo in this place: 2 · Event maximum Shindo: 5−M5.970 km
- 震度1Jun 26, 2026, 12:46 JSTNortheastern Chiba PrefectureShindo in this place: 1 · Event maximum Shindo: 4M5.850 km
- 震度2Jun 25, 2026, 07:30 JSTOff the Coast of Iwate PrefectureShindo in this place: 2 · Event maximum Shindo: 6+M6.950 km
- 震度2Jun 16, 2026, 19:46 JSTSouthern Ibaraki PrefectureShindo in this place: 2 · Event maximum Shindo: 5−M5.550 km
- 震度1Jun 1, 2026, 05:54 JSTOff the Coast of Joetsu and Chuetsu, Niigata PrefectureShindo in this place: 1 · Event maximum Shindo: 3M4.610 km
- 震度2May 15, 2026, 20:22 JSTOff the Coast of Miyagi PrefectureShindo in this place: 2 · Event maximum Shindo: 5−M6.350 km
- 震度2Apr 20, 2026, 16:53 JSTOff the Coast of SanrikuShindo in this place: 2 · Event maximum Shindo: 5+M7.510 km
Ground & J-SHIS
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.
4
Off the Coast of Fukushima Prefecture福島県沖
315+
Noto, Ishikawa Prefecture石川県能登地方
254
Adjacent Sado佐渡付近
122
Northern Ibaraki Prefecture茨城県北部
123
Off the Coast of Miyagi Prefecture宮城県沖
83
Off the Coast of Joetsu and Chuetsu, Niigata Prefecture新潟県上中越沖
8Local 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) · A15204
J-SHIS / NIEDEarthquake scenarios affecting this place
Official J-SHIS models ranked for their potential impact on this municipality.
#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.
#1Major active faultNagaoka-heiya-seien fault zone長岡平野西縁断層帯
Modelled magnitude: M7.5
Read about this model #2Subduction-zone earthquakeNiigata-ken-hokubu-Oki Earthquake新潟県北部沖の地震Modelled magnitude: M7.5
Read about this model #3Major active faultTsukioka fault zone月岡断層帯Modelled magnitude: M6.8
Read about this model #4Other active faultYoshinoya fault吉野屋断層Modelled magnitude: M6.6
Read about this model #5Other active faultYukyu-zan fault zone悠久山断層帯Modelled magnitude: M7.1
Read about this model #6Major active faultMuikamachi fault zone (Northern part) Case 1六日町断層帯北部(ケース1)Modelled magnitude: M6.6
Read about this model #7Other active faultJorakuji fault常楽寺断層Modelled magnitude: M6.6
Read about this model #8Major active faultMuikamachi fault zone (Northern part) Case 2六日町断層帯北部(ケース2)Modelled magnitude: M6.6
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
Nearby places
Municipalities nearest to the representative station position.
Understand local Shindo in context
Guides to this place’s history, seismic intensity and notification tools.
8 min readJapan’s Shindo Scale Explained: What Levels 0–7 Mean
Shindo is Japan’s earthquake intensity scale. See what shaking each level means, from 0 to 7, and why a local Shindo reading 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 →