Iiyama City earthquake and Shindo history
飯山市
Earthquakes for which stations associated with Iiyama City reported an actual Shindo observation.
Latest observation: Jul 25, 2026, 04:54 AM JSTLocal seismic profile
Since May 28, 2015, stations associated with Iiyama City have reported a local reading for 79 earthquakes. Shindo 1 was most common, while the highest local level, Shindo 4, was recorded 1 times.
Latest observationJul 25, 2026
Highest local Shindo4
Observed events79May 28, 2015–Jul 25, 2026
Associated observation stations1JMA
Latest observation: Jul 25, 2026
Recent observed earthquakes
No local observation in the last 7 days. Latest observation: Jul 25, 2026
震度1
Jul 25, 2026, 04:54 AM JSTNorthern Nagano Prefecture
震度1M2.3 · 10 km · 6 km
Jun 25, 2026, 07:30 AM JSTOff the Coast of Iwate Prefecture
震度1M6.9 · 50 km · 505 km
Jun 16, 2026, 07:46 PM JSTSouthern Ibaraki Prefecture
震度1M5.5 · 50 km · 160 km
Jun 1, 2026, 05:54 AM JSTOff the Coast of Joetsu and Chuetsu, Niigata Prefecture
震度2M4.6 · 10 km · 76 km
Apr 20, 2026, 04:53 PM JSTOff the Coast of Sanriku
震度1M7.5 · 10 km · 534 km
Apr 18, 2026, 02:54 PM JSTNorthern Nagano Prefecture
M5.1 · 10 km · 50 km
1 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.
Associated observation stationsStations: JMA observation catalogue · basemap: OpenFreeMap
May 28, 2015 to Jul 25, 2026 · 1 records
All years · Shindo 4+ · Clear filtersObservation 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: May 28, 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: Jul 25, 2026
Recent observed earthquakes
1 observed earthquakes
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.
3
Northern Nagano Prefecture長野県北部
294
Noto, Ishikawa Prefecture石川県能登地方
132
Off the Coast of Joetsu and Chuetsu, Niigata Prefecture新潟県上中越沖
73
Off the Coast of Fukushima Prefecture福島県沖
42
Adjacent Sado佐渡付近
42
Chuetsu, Niigata Prefecture新潟県中越地方
4Local 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) · A20213
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 faultTakada-heiya-toen fault zone高田平野東縁断層帯
Modelled magnitude: M6.7
Read about this model #2Major active faultItoigawa-Shizuoka-kozosen fault zone (Northern segment/Central northern segment/Central southern segment)糸魚川－静岡構造線断層帯（北部と中北部と中南部が同時に活動）Modelled magnitude: M7.4
Read about this model #3Major active faultTokamachi fault zone (Western part)十日町断層帯西部Modelled magnitude: M6.8
Read about this model #4Major active faultItoigawa-Shizuoka-kozosen fault zone (Northern segment)糸魚川−静岡構造線断層帯北部Modelled magnitude: M7.1
Read about this model #5Major active faultItoigawa-Shizuoka-kozosen fault zone (Northern segment/Central northern segment)糸魚川－静岡構造線断層帯（北部と中北部が同時に活動）Modelled magnitude: M7.2
Read about this model #6Major active faultItoigawa-Shizuoka-kozosen fault zone (All segment)糸魚川－静岡構造線断層帯（全体が同時に活動）Modelled magnitude: M7.5
Read about this model #7Major active faultNagaoka-heiya-seien fault zone長岡平野西縁断層帯Modelled magnitude: M7.5
Read about this model #8Other active faultHirataki-Busuno-toge fault平滝-伏野峠断層Modelled magnitude: M6.5
Read about this model #9Major active faultNagano-bonchi-seien fault zone (All segment)長野盆地西縁断層帯（全体が同時に活動）Modelled magnitude: M7.3
Read about this model #10Major active faultNagano-bonchi-seien fault zone (Iyama-Chikuma segment)長野盆地西縁断層帯飯山−千曲区間Modelled magnitude: M7.2
Read about this model #11Major active faultTakada-heiya-seien fault zone高田平野西縁断層帯Modelled magnitude: M6.8
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 →