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.
Mashiko Town earthquake and Shindo history in 2025
益子町
This annual view includes only earthquakes from 2025 for which stations associated with Mashiko Town recorded Shindo.
Data period: 1 January–31 December 2025Data period: 1 January–31 December 2025
In 2025, stations associated with Mashiko Town reported local Shindo for 52 earthquakes. The highest local level recorded that year was Shindo 3.
Observed events522025
Highest local Shindo32025
Data period: 1 January–31 December 2025 · 52 observed earthquakes
2025 · Clear filtersObservation history · 2025
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 23, 2015
All yearsObserved events by year
Choose a year to update the event history and local Shindo distribution.
2025
All ShindoShindo observed in this place
The highest reading from stations in this place, not the maximum Shindo of the whole event.
Data period: 1 January–31 December 2025
Observation history · 2025
52 observed earthquakes
- 震度1Dec 23, 2025, 18:45 JSTOff the southeast Coast of Mie PrefectureShindo in this place: 1 · Event maximum Shindo: 2M5.0330 km
- 震度3Dec 12, 2025, 19:05 JSTSouthern Ibaraki PrefectureShindo in this place: 3 · Event maximum Shindo: 4M4.950 km
- 震度1Dec 12, 2025, 11:44 JSTOff the east Coast of Aomori PrefectureShindo in this place: 1 · Event maximum Shindo: 4M6.720 km
- 震度2Dec 8, 2025, 23:15 JSTOff the east Coast of Aomori PrefectureShindo in this place: 2 · Event maximum Shindo: 6+M7.650 km
- 震度1Nov 13, 2025, 09:54 JSTOff the Coast of Ibaraki PrefectureShindo in this place: 1 · Event maximum Shindo: 1M4.730 km
- 震度1Nov 12, 2025, 06:50 JSTNorthern Ibaraki PrefectureShindo in this place: 1 · Event maximum Shindo: 2M3.860 km
- 震度1Nov 9, 2025, 06:25 JSTSouthern Tochigi PrefectureShindo in this place: 1 · Event maximum Shindo: 2M4.070 km
- 震度1Oct 30, 2025, 17:00 JSTOff the Coast of Fukushima PrefectureShindo in this place: 1 · Event maximum Shindo: 2M4.610 km
Ground & J-SHIS
The context below uses the place's full available history and reference models; it is not part of the 2025 statistics.
Local seismic profile
Where the shaking usually comes from
Source regions of earthquakes observed here, ordered by the number of reports.
4
Southern Ibaraki Prefecture茨城県南部
1724
Off the Coast of Fukushima Prefecture福島県沖
1554
Off the Coast of Ibaraki Prefecture茨城県沖
1504
Northern Ibaraki Prefecture茨城県北部
763
Northwestern Chiba Prefecture千葉県北西部
353
Off the east Coast of Chiba Prefecture千葉県東方沖
31Reference model · not a forecast J-SHIS (NIED) · 250 m · 5440506712
J-SHIS / NIEDGround conditions near an observation station
J-SHIS data for the 250 m mesh containing 益子町益子.
How to read these values
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 52% higher 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) · A09342
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.
#1Subduction-zone earthquakeSagami Trough earthquakes (M8 class)相模トラフ沿いのM8クラスの地震
Modelled magnitude: M7.9–8.6
Read about this model #2Subduction-zone earthquakeMega earthquakes along the Japan Trench (Great East Japan Earthquake 2011 type)日本海溝沿いの超巨大地震（東北地方太平洋沖型）Modelled magnitude: M8.6–9.0
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: 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 →