Yamanouchi Town earthquake and Shindo history
山ノ内町
Earthquakes for which stations associated with Yamanouchi Town reported an actual Shindo observation.
Latest observation: Jul 25, 2026, 04:54 AM JSTLocal seismic profile
Since Apr 23, 2015, stations associated with Yamanouchi Town have reported a local reading for 93 earthquakes. Shindo 1 was most common, while the highest local level, Shindo 3, was recorded 5 times.
Latest observationJul 25, 2026
Highest local Shindo3
Observed events93Apr 23, 2015–Jul 25, 2026
Associated observation stations2JMA
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 · 7 km
Jun 6, 2026, 08:47 AM JSTNorthern Nagano Prefecture
震度1M2.2 · 0 km · 5 km
May 28, 2026, 01:59 AM JSTNorthern Nagano Prefecture
震度1M2.1 · 0 km · 5 km
Apr 25, 2026, 09:41 PM JSTNorthern Nagano Prefecture
震度1M2.9 · 0 km · 19 km
Apr 18, 2026, 02:54 PM JSTNorthern Nagano Prefecture
震度1M5.1 · 10 km · 49 km
Apr 18, 2026, 01:20 PM JSTNorthern Nagano Prefecture
M5.0 · 10 km · 49 km
2 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.
Apr 23, 2015 to Jul 25, 2026 · 13 records
All years · Shindo 2+ · 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: Apr 23, 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
13 observed earthquakes
- 震度2Jan 19, 2025, 14:36 JSTNorthern Nagano PrefectureShindo in this place: 2 · Event maximum Shindo: 2M2.610 km
- 震度2Jan 15, 2024, 21:20 JSTNorthern Nagano PrefectureShindo in this place: 2 · Event maximum Shindo: 2M2.810 km
- 震度2Feb 20, 2023, 15:34 JSTNorthern Nagano PrefectureShindo in this place: 2 · Event maximum Shindo: 2M3.310 km
- 震度2Nov 28, 2021, 12:50 JSTNorthern Nagano PrefectureShindo in this place: 2 · Event maximum Shindo: 2M2.220 km
- 震度2Jun 18, 2019, 22:22 JSTOff the Coast of Yamagata PrefectureShindo in this place: 2 · Event maximum Shindo: 6+M6.810 km
- 震度2Jul 31, 2018, 14:53 JSTNorthern Nagano PrefectureShindo in this place: 2 · Event maximum Shindo: 3M3.710 km
- 震度2May 25, 2018, 21:13 JSTNorthern Nagano PrefectureShindo in this place: 2 · Event maximum Shindo: 5+M5.10 km
- 震度2Dec 6, 2017, 00:13 JSTCentral Nagano PrefectureShindo in this place: 2 · Event maximum Shindo: 4M5.210 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.
3
Northern Nagano Prefecture長野県北部
693
Noto, Ishikawa Prefecture石川県能登地方
52
Chuetsu, Niigata Prefecture新潟県中越地方
41
Off the Coast of Fukushima Prefecture福島県沖
32
Central Nagano Prefecture長野県中部
21
Off the Coast of Joetsu and Chuetsu, Niigata Prefecture新潟県上中越沖
2Local 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) · 250 m · 5538039313
J-SHIS / NIEDGround conditions near an observation station
J-SHIS data for the 250 m mesh containing 山ノ内町平穏.
How to read these values
A landform class assigned to the whole 250 m mesh and used to estimate AVS30. The name alone does not determine safety, and it is model data rather than a borehole survey at the station.
The average speed of an S-wave through the upper 30 metres. A lower value generally indicates softer material that can amplify shaking more. J-SHIS uses this value to estimate the amplification shown to the right. It is not predicted Shindo.
For the same incoming wave, local ground conditions may make peak-motion velocity at the surface about 23% lower than at engineering bedrock (Vs = 400 m/s). This value describes motion velocity—it does not multiply magnitude or forecast ground acceleration.
Ground conditions can change over short distances. These values do not rate the whole place or the safety of a building, and they cannot predict an earthquake. Source: J-SHIS (NIED), V4 model; processed for presentation by JISHINDESU.
Reference model · not a forecast J-SHIS (NIED) · A20561
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 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 #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 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 #4Major 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 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 →