Nagano earthquake and Shindo history in 2026
長野県
This annual view includes only earthquakes from 2026 for which stations associated with Nagano recorded Shindo.
Data period: 1 January–31 December 2026In 2026, stations associated with Nagano reported local Shindo for 13 earthquakes. The highest local level recorded that year was Shindo 5+.
Observation history · 2026
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.
Observed events by year
Choose a year to update the event history and local Shindo distribution.
Shindo observed in this place
The highest reading from stations in this place, not the maximum Shindo of the whole event.
Observation history · 2026
13 observed earthquakes
- 震度3Aug 23, 2026, 02:00 JSTSouthern Ibaraki PrefectureShindo in this place: 3 · Event maximum Shindo: 5−M5.970 km
- 震度3Jun 16, 2026, 19:46 JSTSouthern Ibaraki PrefectureShindo in this place: 3 · Event maximum Shindo: 5−M5.550 km
- 震度3Jun 5, 2026, 23:30 JSTCentral Nagano PrefectureShindo in this place: 3 · Event maximum Shindo: 3M3.510 km
- 震度3Jun 4, 2026, 08:50 JSTCentral Nagano PrefectureShindo in this place: 3 · Event maximum Shindo: 3M3.110 km
- 震度3May 27, 2026, 16:10 JSTNorthern Nagano PrefectureShindo in this place: 3 · Event maximum Shindo: 3M3.110 km
- 震度3Apr 29, 2026, 16:45 JSTNorthern Nagano PrefectureShindo in this place: 3 · Event maximum Shindo: 3M3.410 km
- 震度3Apr 27, 2026, 07:45 JSTNorthern Nagano PrefectureShindo in this place: 3 · Event maximum Shindo: 3M3.210 km
- 震度3Apr 23, 2026, 02:42 JSTNorthern Nagano PrefectureShindo in this place: 3 · Event maximum Shindo: 3M4.110 km
Regional context
The context below uses the place's full available history and reference models; it is not part of the 2026 statistics.
Where the shaking usually comes from
Source regions of earthquakes observed here, ordered by the number of reports.
Earthquake scenarios affecting this place
Official J-SHIS models ranked for their potential impact on this prefecture.
#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.
Modelled magnitude: M7.0
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 faultItoigawa-Shizuoka-kozosen fault zone (Northern segment/Central northern segment)糸魚川－静岡構造線断層帯（北部と中北部が同時に活動）Modelled magnitude: M7.2
Read about this model #4Major active faultItoigawa-Shizuoka-kozosen fault zone (Northern segment)糸魚川−静岡構造線断層帯北部Modelled magnitude: M7.1
Read about this model #5Major active faultItoigawa-Shizuoka-kozosen fault zone (Central northern segment/Central southern segment)糸魚川－静岡構造線断層帯（中北部と中南部が同時に活動）Modelled magnitude: M7.1
Read about this model #6Major 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 #7Major active faultSakaitoge-Kamiya fault zone (Main part)境峠・神谷断層帯主部Modelled magnitude: M7.0
Read about this model #8Major active faultItoigawa-Shizuoka-kozosen fault zone (Central southern segment)糸魚川−静岡構造線断層帯中南部Modelled magnitude: M6.8
Read about this model #9Subduction-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 #10Major active faultItoigawa-Shizuoka-kozosen fault zone (Central northern segment/Central southern segment/Southern segment)糸魚川－静岡構造線断層帯（中北部と中南部と南部が同時に活動）Modelled magnitude: M7.4
Read about this model #11Major active faultMutoyama-Narai fault zone霧訪山－奈良井断層帯Modelled magnitude: M6.7
Read about this model #12Major active faultItoigawa-Shizuoka-kozosen fault zone (Central southern segment/Southern segment)糸魚川－静岡構造線断層帯（中南部と南部が同時に活動）Modelled magnitude: M7.3
Read about this model #13Other active faultJonen-dake-higashi fault zone常念岳東断層帯Modelled magnitude: M7.2
Read about this model #14Other active faultShimoina-ryuto fault zone下伊那竜東断層帯Modelled magnitude: M7.2
Read about this model #15Major active faultInadani fault zone (Southeastern part)伊那谷断層帯南東部Modelled magnitude: M6.8
Read about this model #16Other active faultKirigamine fault zone霧ヶ峰断層帯Modelled magnitude: M7.0
Read about this model #17Major active faultNagano-bonchi-seien fault zone (Omi segment)長野盆地西縁断層帯麻績区間Modelled magnitude: M6.4
Read about this model #18Other active faultMedian Tectonic Line-Akaishi-sanchi-seien fault zone中央構造線赤石山地西縁断層帯Modelled magnitude: M7.7
Read about this model #19Major active faultItoigawa-Shizuoka-kozosen fault zone (Southern segment)糸魚川−静岡構造線断層帯南部Modelled magnitude: M7.0
Read about this model #20Major active faultTakada-heiya-toen fault zone高田平野東縁断層帯Modelled magnitude: M6.7
Read about this model #21Major active faultFukaya fault zone深谷断層帯Modelled magnitude: M7.2
Read about this model #22Major active faultEnasan-Sanageyamakita fault zone恵那山－猿投山北断層帯Modelled magnitude: M7.2
Read about this model #23Major active faultSeinaiji toge fault zone清内路峠断層帯Modelled magnitude: M6.8
Read about this model #24Subduction-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 #25Major active faultTokamachi fault zone (Western part)十日町断層帯西部Modelled magnitude: M6.8
Read about this model #26Major active faultNagaoka-heiya-seien fault zone長岡平野西縁断層帯Modelled magnitude: M7.5
Read about this model #27Other active faultHiraoka fault平岡断層Modelled magnitude: M7.0
Read about this model #28Other active faultTogakushi-yama fault戸隠山断層Modelled magnitude: M6.6
Read about this model #29Major active faultKiso-sanmyaku-seien fault zone (Main part/Southern segment)木曽山脈西縁断層帯主部南部Modelled magnitude: M6.3
Read about this model #30Other active faultHirataki-Busuno-toge fault平滝-伏野峠断層Modelled magnitude: M6.5
Read about this model #31Other active faultSuzugasawa fault鈴ヶ沢断層Modelled magnitude: M6.5
Read about this model #32Major active faultInohana fault zone高山・大原断層帯猪之鼻断層帯Modelled magnitude: M6.5
Read about this model #33Major active faultMuikamachi fault zone (Southern part)六日町断層帯南部Modelled magnitude: M6.8
Read about this model #34Major 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 #35Major 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 model #36Major active faultInadani fault zone (Main part)伊那谷断層帯主部Modelled magnitude: M7.3
Read about this model #37Major active faultKiso-sanmyaku-seien fault zone (Main part/Northern segment)木曽山脈西縁断層帯主部北部Modelled magnitude: M6.9
Read about this model #38Major active faultFukaya/Ayasegawa fault zone (All segment)深谷断層・綾瀬川断層（全体が同時に活動）Modelled magnitude: M7.5
Read about this model #39Major active faultFukaya/Ayasegawa fault zone (Fukaya fault zone/Kounosu-Ina segment)深谷断層・綾瀬川断層（深谷断層と鴻巣－伊奈区間が同時に活動）Modelled magnitude: M7.4
Read about this model #40Major active faultAtera fault zone (Main part/Southern segment)阿寺断層帯主部南部Modelled magnitude: M7.2
Read about this model #41Major active faultAtotsugawa fault zone跡津川断層帯Modelled magnitude: M7.2
Read about this model #42Major active faultTakada-heiya-seien fault zone高田平野西縁断層帯Modelled magnitude: M6.8
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.
Municipalities in this prefecture
Municipalities with an observation history, ordered alphabetically. Counts depend on station coverage and the available data period; they are not a risk ranking.
70 Observed eventsShindo 3
→29 Observed eventsShindo 3
→17 Observed eventsShindo 3
→97 Observed eventsShindo 4
→84 Observed eventsShindo 3
→148 Observed eventsShindo 4
→168 Observed eventsShindo 5−
→102 Observed eventsShindo 4
→251 Observed eventsShindo 4
→76 Observed eventsShindo 3
→69 Observed eventsShindo 4
→76 Observed eventsShindo 3
→35 Observed eventsShindo 2
→75 Observed eventsShindo 3
→168 Observed eventsShindo 3
→90 Observed eventsShindo 3
→79 Observed eventsShindo 4
→95 Observed eventsShindo 4
→94 Observed eventsShindo 4
→138 Observed eventsShindo 4
→54 Observed eventsShindo 4
→452 Observed eventsShindo 5+
→48 Observed eventsShindo 3
→35 Observed eventsShindo 3
→40 Observed eventsShindo 3
→75 Observed eventsShindo 4
→143 Observed eventsShindo 3
→50 Observed eventsShindo 3
→153 Observed eventsShindo 4
→35 Observed eventsShindo 3
→63 Observed eventsShindo 3
→80 Observed eventsShindo 3
→51 Observed eventsShindo 3
→80 Observed eventsShindo 4
→49 Observed eventsShindo 3
→92 Observed eventsShindo 3
→73 Observed eventsShindo 3
→78 Observed eventsShindo 4
→115 Observed eventsShindo 3
→142 Observed eventsShindo 4
→51 Observed eventsShindo 4
→33 Observed eventsShindo 4
→236 Observed eventsShindo 5−
→50 Observed eventsShindo 3
→73 Observed eventsShindo 4
→268 Observed eventsShindo 5+
→97 Observed eventsShindo 4
→76 Observed eventsShindo 2
→200 Observed eventsShindo 5+
→95 Observed eventsShindo 4
→164 Observed eventsShindo 5+
→103 Observed eventsShindo 4
→211 Observed eventsShindo 4
→46 Observed eventsShindo 2
→79 Observed eventsShindo 3
→96 Observed eventsShindo 3
→102 Observed eventsShindo 5−
→244 Observed eventsShindo 4
→56 Observed eventsShindo 3
→40 Observed eventsShindo 3
→120 Observed eventsShindo 4
→71 Observed eventsShindo 3
→50 Observed eventsShindo 3
→58 Observed eventsShindo 3
→44 Observed eventsShindo 3
→115 Observed eventsShindo 4
→116 Observed eventsShindo 4
→110 Observed eventsShindo 3
→93 Observed eventsShindo 3
→99 Observed eventsShindo 3
→Understand local Shindo in context
Guides to this place’s history, seismic intensity and notification tools.
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 →