Sukumo City earthquake and Shindo history
宿毛市
Earthquakes for which stations associated with Sukumo City reported an actual Shindo observation.
Latest observation: Sep 21, 2026, 10:38 PM JSTLATEST LOCAL OBSERVATION
Latest earthquake observed in Sukumo City
震度2
Highest Shindo observed in Sukumo CitySource region: Hyuganada SeaM4.8
Local seismic profile
Since Feb 3, 2015, stations associated with Sukumo City have reported a local reading for 333 earthquakes. Shindo 1 was most common, while the highest local level, Shindo 6−, was recorded 1 times.
Latest observationSep 21, 2026
Highest local Shindo6−
Observed events333Feb 3, 2015–Sep 21, 2026
Associated observation stations4JMA
Latest observation: Sep 21, 2026
Recent observed earthquakes
Earthquakes for which stations associated with Sukumo City reported an actual Shindo observation.
震度2
Sep 21, 2026, 10:38 PM JSTHyuganada Sea
震度1M4.8 · 30 km · 67 km
Aug 12, 2026, 01:05 PM JSTAmakusa and Ashikita Region, Kumamoto Prefecture
震度2M4.9 · 10 km · 212 km
Aug 2, 2026, 04:10 AM JSTHyuganada Sea
震度1M5.3 · 10 km · 122 km
Aug 1, 2026, 09:47 PM JSTKumamoto Region, Kumamoto Prefecture
震度1M4.7 · 10 km · 190 km
Jul 30, 2026, 05:16 AM JSTKumamoto Region, Kumamoto Prefecture
震度1M4.6 · 10 km · 203 km
Jul 29, 2026, 10:19 PM JSTAmakusa and Ashikita Region, Kumamoto Prefecture
M5.8 · 0 km · 224 km
4 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
Feb 3, 2015 to Sep 21, 2026 · 66 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: Feb 3, 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 21, 2026
Recent observed earthquakes
66 observed earthquakes
- 震度2Sep 21, 2026, 22:38 JSTHyuganada SeaShindo in this place: 2 · Event maximum Shindo: 3M4.830 km
- 震度2Aug 2, 2026, 04:10 JSTHyuganada SeaShindo in this place: 2 · Event maximum Shindo: 3M5.310 km
- 震度2Jul 28, 2026, 17:08 JSTAmakusa and Ashikita Region, Kumamoto PrefectureShindo in this place: 2 · Event maximum Shindo: 5−M6.10 km
- 震度2May 22, 2026, 00:23 JSTBungosuido StraitShindo in this place: 2 · Event maximum Shindo: 2M3.540 km
- 震度2Mar 1, 2026, 18:00 JSTOff the west Coast of Satsuma PeninsulaShindo in this place: 2 · Event maximum Shindo: 3M5.4130 km
- 震度2Feb 3, 2026, 00:11 JSTBungosuido StraitShindo in this place: 2 · Event maximum Shindo: 2M3.540 km
- 震度2Jan 6, 2026, 10:18 JSTEastern Shimane PrefectureShindo in this place: 2 · Event maximum Shindo: 5+M6.210 km
- 震度2Nov 25, 2025, 18:01 JSTAso Region, Kumamoto PrefectureShindo in this place: 2 · Event maximum Shindo: 5+M5.710 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.
6−
Bungosuido Strait豊後水道
1145−
Hyuganada Sea日向灘
874
Kumamoto Region, Kumamoto Prefecture熊本県熊本地方
303
Nanyo, Ehime Prefecture愛媛県南予
213
Iyonada Sea伊予灘
142
Aso Region, Kumamoto Prefecture熊本県阿蘇地方
10Local 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 · 4932350613
J-SHIS / NIEDGround conditions near an observation station
J-SHIS data for the 250 m mesh containing 宿毛市片島.
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 14% 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) · A39208
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 #2Other active faultSukumo-Nakamura fault zone宿毛－中村断層帯Modelled magnitude: M7.2
Read about this model #3Major 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 #4Major 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 #5Major 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 #6Major 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 #7Major 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 #8Major 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 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 →