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.
Arida City earthquake and Shindo history in 2025
有田市
This annual view includes only earthquakes from 2025 for which stations associated with Arida City recorded Shindo.
Data period: 1 January–31 December 2025Data period: 1 January–31 December 2025
In 2025, stations associated with Arida City reported local Shindo for 16 earthquakes. The highest local level recorded that year was Shindo 2.
Observed events162025
Highest local Shindo22025
Data period: 1 January–31 December 2025 · 16 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: Feb 6, 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
16 observed earthquakes
- 震度1Nov 2, 2025, 07:30 JSTNorthern Wakayama PrefectureShindo in this place: 1 · Event maximum Shindo: 3M4.110 km
- 震度1Aug 2, 2025, 01:16 JSTKiisuido StraitShindo in this place: 1 · Event maximum Shindo: 1M2.610 km
- 震度1Jul 29, 2025, 02:44 JSTKiisuido StraitShindo in this place: 1 · Event maximum Shindo: 1M2.410 km
- 震度1Jul 16, 2025, 14:35 JSTKiisuido StraitShindo in this place: 1 · Event maximum Shindo: 1M2.910 km
- 震度1Jul 7, 2025, 10:51 JSTKiisuido StraitShindo in this place: 1 · Event maximum Shindo: 1M2.90 km
- 震度1Jun 2, 2025, 08:50 JSTSouthern Wakayama PrefectureShindo in this place: 1 · Event maximum Shindo: 2M3.860 km
- 震度1May 9, 2025, 20:26 JSTKiisuido StraitShindo in this place: 1 · Event maximum Shindo: 1M2.710 km
- 震度1Apr 4, 2025, 04:48 JSTNorthern Wakayama PrefectureShindo in this place: 1 · Event maximum Shindo: 2M2.810 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.
3
Northern Wakayama Prefecture和歌山県北部
964
Kiisuido Strait紀伊水道
874
Southern Wakayama Prefecture和歌山県南部
133
Nara Prefecture奈良県
42
Southern Tokushima Prefecture徳島県南部
41
Off the Coast of Shikoku四国沖
4Reference model · not a forecast J-SHIS (NIED) · 250 m · 5135110011
J-SHIS / NIEDGround conditions near an observation station
J-SHIS data for the 250 m mesh containing 有田市箕島（旧）.
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 75% 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) · A30204
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 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 (Kitan-kaikyo - Naruto-Kaikyo segment)中央構造線断層帯（紀淡海峡－鳴門海峡区間）Modelled magnitude: M7.0
Read about this model #3Major 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 #4Major 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 #5Major 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 #6Major 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 #7Major 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 #8Major 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 #9Major 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 #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 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 #12Major active faultMedian Tectonic Line (MTL) fault zone (FROM Gojoya segment TO Kitan-kaikyo - Naruto-Kaikyo segment)中央構造線断層帯（五条谷区間～紀淡海峡－鳴門海峡区間が同時に活動）Modelled magnitude: M7.4
Read about this model #13Major active faultMedian Tectonic Line (MTL) fault zone (FROM Negoro segment TO Kitan-kaikyo - Naruto-Kaikyo segment)中央構造線断層帯（根来区間～紀淡海峡－鳴門海峡区間が同時に活動）Modelled magnitude: M7.2
Read about this model #14Major active faultMedian Tectonic Line (MTL) fault zone (FROM Gojoya segment TO Negoro segment)中央構造線断層帯（五条谷区間～根来区間が同時に活動）Modelled magnitude: M7.1
Read about this model #15Major 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 #16Major 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 #17Major active faultMedian Tectonic Line (MTL) fault zone (Negoro segment)中央構造線断層帯（根来区間）Modelled magnitude: M6.7
Read about this model #18Major 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 #19Major 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 #20Major 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 #21Major 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 #22Major 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 #23Major 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 #24Major 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 #25Major 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 #26Major 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 #27Major 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 #28Major 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 #29Major 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 #30Major 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 #31Major 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 #32Major 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 #33Major 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 #34Major active faultMedian Tectonic Line (MTL) fault zone (FROM Kongo-sanchi-toen segment TO Negoro segment)中央構造線断層帯（金剛山地東縁区間～根来区間が同時に活動）Modelled magnitude: M7.3
Read about this model #35Major 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 #36Major 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 #37Major 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 #38Major active faultMedian Tectonic Line (MTL) fault zone (FROM Kongo-sanchi-toen segment TO Gojoya segment)中央構造線断層帯（金剛山地東縁区間～五条谷区間が同時に活動）Modelled magnitude: M7.0
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 →