Ichihara City earthquake and Shindo history
市原市
Earthquakes for which stations associated with Ichihara City reported an actual Shindo observation.
Latest observation: Sep 17, 2026, 12:07 AM JSTLATEST LOCAL OBSERVATION
Latest earthquake observed in Ichihara City
震度2
Highest Shindo observed in Ichihara CitySource region: Southern Ibaraki PrefectureM4.8
Local seismic profile
Since Jan 26, 2015, stations associated with Ichihara City have reported a local reading for 603 earthquakes. Shindo 1 was most common, while the highest local level, Shindo 4, was recorded 10 times.
Latest observationSep 17, 2026
Highest local Shindo4
Observed events603Jan 26, 2015–Sep 17, 2026
Associated observation stations2JMA
Latest observation: Sep 17, 2026
Recent observed earthquakes
Earthquakes for which stations associated with Ichihara City reported an actual Shindo observation.
震度2
Sep 17, 2026, 12:07 AM JSTSouthern Ibaraki Prefecture
震度2M4.8 · 70 km · 68 km
Aug 30, 2026, 12:17 AM JSTOff the east Coast of Chiba Prefecture
震度4M4.8 · 30 km · 82 km
Aug 23, 2026, 02:00 AM JSTSouthern Ibaraki Prefecture
震度2M5.9 · 70 km · 57 km
Aug 21, 2026, 09:02 PM JSTOff the east Coast of Hachijojima Island
震度1M5.5 · 60 km · 202 km
Aug 7, 2026, 04:40 PM JSTNorthwestern Chiba Prefecture
震度1M3.4 · 70 km · 13 km
Jul 16, 2026, 09:01 AM JSTNortheastern Chiba Prefecture
M4.4 · 50 km · 66 km
2 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.
Jan 26, 2015 to Sep 17, 2026 · 37 records
All years · Shindo 3+ · 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: Jan 26, 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
37 observed earthquakes
- 震度3Jun 26, 2026, 22:29 JSTEastern Region · Fuji Five Lakes, Yamanashi PrefectureShindo in this place: 3 · Event maximum Shindo: 6−M5.620 km
- 震度3Jun 26, 2026, 12:46 JSTNortheastern Chiba PrefectureShindo in this place: 3 · Event maximum Shindo: 4M5.850 km
- 震度3Jan 9, 2026, 20:08 JSTNortheastern Chiba PrefectureShindo in this place: 3 · Event maximum Shindo: 4M4.730 km
- 震度3Mar 21, 2024, 09:08 JSTSouthern Ibaraki PrefectureShindo in this place: 3 · Event maximum Shindo: 5−M5.350 km
- 震度3Mar 9, 2024, 04:26 JSTOff the east Coast of Chiba PrefectureShindo in this place: 3 · Event maximum Shindo: 4M4.530 km
- 震度3Mar 2, 2024, 01:49 JSTSouthern Chiba PrefectureShindo in this place: 3 · Event maximum Shindo: 4M5.020 km
- 震度3Feb 29, 2024, 18:35 JSTOff the east Coast of Chiba PrefectureShindo in this place: 3 · Event maximum Shindo: 4M4.920 km
- 震度3Feb 29, 2024, 11:13 JSTOff the east Coast of Chiba PrefectureShindo in this place: 3 · Event maximum Shindo: 3M4.730 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.
4
Off the east Coast of Chiba Prefecture千葉県東方沖
1254
Northwestern Chiba Prefecture千葉県北西部
1044
Southern Ibaraki Prefecture茨城県南部
633
Northeastern Chiba Prefecture千葉県北東部
412
Off the Coast of Ibaraki Prefecture茨城県沖
344
Southern Chiba Prefecture千葉県南部
33Local 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) · A12219
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 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 #2Major active faultKamogawa-teichi fault zone鴨川低地断層帯Modelled magnitude: M6.7
Read about this model #3Major 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 #4Subduction-zone earthquakeMega earthquakes along the Japan Trench (Great East Japan Earthquake 2011 type)日本海溝沿いの超巨大地震（東北地方太平洋沖型）Modelled magnitude: M8.6–9.0
Read about this model #5Major 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 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 →