Saku City earthquake and Shindo history
佐久市
Earthquakes for which stations associated with Saku City reported an actual Shindo observation.
Latest observation: Sep 17, 2026, 12:07 AM JSTLATEST LOCAL OBSERVATION
Latest earthquake observed in Saku City
震度1
Highest Shindo observed in Saku CitySource region: Southern Ibaraki PrefectureM4.8
Local seismic profile
Since Feb 17, 2015, stations associated with Saku City have reported a local reading for 211 earthquakes. Shindo 1 was most common, while the highest local level, Shindo 4, was recorded 2 times.
Latest observationSep 17, 2026
Highest local Shindo4
Observed events211Feb 17, 2015–Sep 17, 2026
Associated observation stations5JMA
Latest observation: Sep 17, 2026
Recent observed earthquakes
Earthquakes for which stations associated with Saku City reported an actual Shindo observation.
震度1
Sep 17, 2026, 12:07 AM JSTSouthern Ibaraki Prefecture
震度2M4.8 · 70 km · 149 km
Aug 23, 2026, 02:00 AM JSTSouthern Ibaraki Prefecture
震度1M5.9 · 70 km · 151 km
Aug 21, 2026, 09:02 PM JSTOff the east Coast of Hachijojima Island
震度3M5.5 · 60 km · 338 km
Jun 26, 2026, 10:29 PM JSTEastern Region · Fuji Five Lakes, Yamanashi Prefecture
震度1M5.6 · 20 km · 87 km
Jun 26, 2026, 12:46 PM JSTNortheastern Chiba Prefecture
震度2M5.8 · 50 km · 203 km
Jun 25, 2026, 07:30 AM JSTOff the Coast of Iwate Prefecture
M6.9 · 50 km · 555 km
5 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 17, 2015 to Sep 17, 2026 · 155 records
All years · Shindo 1+ · 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 17, 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 17, 2026
Recent observed earthquakes
155 observed earthquakes
- 震度1Sep 17, 2026, 00:07 JSTSouthern Ibaraki PrefectureShindo in this place: 1 · Event maximum Shindo: 3M4.870 km
- 震度1Aug 21, 2026, 21:02 JSTOff the east Coast of Hachijojima IslandShindo in this place: 1 · Event maximum Shindo: 3M5.560 km
- 震度1Jun 26, 2026, 12:46 JSTNortheastern Chiba PrefectureShindo in this place: 1 · Event maximum Shindo: 4M5.850 km
- 震度1Jun 1, 2026, 05:54 JSTOff the Coast of Joetsu and Chuetsu, Niigata PrefectureShindo in this place: 1 · Event maximum Shindo: 3M4.610 km
- 震度1May 15, 2026, 20:22 JSTOff the Coast of Miyagi PrefectureShindo in this place: 1 · Event maximum Shindo: 5−M6.350 km
- 震度1May 6, 2026, 19:06 JSTEastern Kanagawa PrefectureShindo in this place: 1 · Event maximum Shindo: 3M4.2100 km
- 震度1Apr 7, 2026, 19:52 JSTCentral Nagano PrefectureShindo in this place: 1 · Event maximum Shindo: 2M3.210 km
- 震度1Apr 1, 2026, 10:06 JSTSouthern Ibaraki PrefectureShindo in this place: 1 · Event maximum Shindo: 5−M5.050 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.
3
Southern Ibaraki Prefecture茨城県南部
243
Off the Coast of Fukushima Prefecture福島県沖
224
Noto, Ishikawa Prefecture石川県能登地方
133
Central Nagano Prefecture長野県中部
122
Off the east Coast of Chiba Prefecture千葉県東方沖
102
Northern Ibaraki Prefecture茨城県北部
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) · A20217
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 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 #2Major active faultFukaya fault zone深谷断層帯Modelled magnitude: M7.2
Read about this model #3Major 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 #4Subduction-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 #5Major 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 #6Subduction-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 #7Major 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 #8Major 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 #9Major 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 #10Other active faultKirigamine fault zone霧ヶ峰断層帯Modelled magnitude: M7.0
Read about this model #11Major 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 #12Major 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 #13Major 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 #14Major 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 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 →