Nagaoka City earthquake and Shindo history
長岡市
Earthquakes for which stations associated with Nagaoka City reported an actual Shindo observation.
Latest observation: Aug 23, 2026, 02:00 AM JSTLocal seismic profile
Since Feb 8, 2015, stations associated with Nagaoka City have reported a local reading for 289 earthquakes. Shindo 1 was most common, while the highest local level, Shindo 6−, was recorded 1 times.
Latest observationAug 23, 2026
Highest local Shindo6−
Observed events289Feb 8, 2015–Aug 23, 2026
Associated observation stations14JMA
Latest observation: Aug 23, 2026
Recent observed earthquakes
No local observation in the last 7 days. Latest observation: Aug 23, 2026
震度2
Aug 23, 2026, 02:00 AM JSTSouthern Ibaraki Prefecture
震度1M5.9 · 70 km · 200 km
Jul 11, 2026, 12:42 PM JSTChuetsu, Niigata Prefecture
震度1M3.3 · 0 km · 32 km
Jul 2, 2026, 08:48 PM JSTAizu, Fukushima Prefecture
震度1M4.6 · 150 km · 67 km
Jun 26, 2026, 10:29 PM JSTEastern Region · Fuji Five Lakes, Yamanashi Prefecture
震度1M5.6 · 20 km · 210 km
Jun 26, 2026, 12:46 PM JSTNortheastern Chiba Prefecture
震度2M5.8 · 50 km · 254 km
Jun 25, 2026, 07:30 AM JSTOff the Coast of Iwate Prefecture
M6.9 · 50 km · 427 km
14 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.
Feb 8, 2015 to Aug 23, 2026 · 2 records
All years · Shindo 5−+ · 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 8, 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: Aug 23, 2026
Recent observed earthquakes
2 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.
6−
Noto, Ishikawa Prefecture石川県能登地方
504
Off the Coast of Fukushima Prefecture福島県沖
445−
Adjacent Sado佐渡付近
302
Chuetsu, Niigata Prefecture新潟県中越地方
293
Off the Coast of Joetsu and Chuetsu, Niigata Prefecture新潟県上中越沖
152
Southern Ibaraki Prefecture茨城県南部
14Local 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) · A15202
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 faultNagaoka-heiya-seien fault zone長岡平野西縁断層帯
Modelled magnitude: M7.5
Read about this model #2Other active faultYukyu-zan fault zone悠久山断層帯Modelled magnitude: M7.1
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 faultMuikamachi fault zone (Northern part) Case 1六日町断層帯北部(ケース1)Modelled magnitude: M6.6
Read about this model #5Other active faultJorakuji fault常楽寺断層Modelled magnitude: M6.6
Read about this model #6Other active faultYoshinoya fault吉野屋断層Modelled magnitude: M6.6
Read about this model #7Subduction-zone earthquakeNiigata-ken-hokubu-Oki Earthquake新潟県北部沖の地震Modelled magnitude: M7.5
Read about this model #8Major active faultMuikamachi fault zone (Southern part)六日町断層帯南部Modelled magnitude: M6.8
Read about this model #9Major active faultTsukioka fault zone月岡断層帯Modelled magnitude: M6.8
Read about this model #10Major active faultTokamachi fault zone (Eastern part)十日町断層帯東部Modelled magnitude: M6.5
Read about this model #11Major active faultMuikamachi fault zone (Northern part) Case 2六日町断層帯北部(ケース2)Modelled magnitude: M6.6
Read about this model #12Major 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 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 →