Niiza City earthquake and Shindo history in 2021
新座市
This annual view includes only earthquakes from 2021 for which stations associated with Niiza City recorded Shindo.
Data period: 1 January–31 December 2021In 2021, stations associated with Niiza City reported local Shindo for 10 earthquakes. The highest local level recorded that year was Shindo 4.
Observation history · 2021
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 · 2021
10 observed earthquakes
- 震度2Dec 29, 2021, 11:33 JST23 wards, TokyoShindo in this place: 2 · Event maximum Shindo: 3M3.430 km
- 震度2Dec 12, 2021, 12:31 JSTSouthern Ibaraki PrefectureShindo in this place: 2 · Event maximum Shindo: 4M5.050 km
- 震度2Dec 3, 2021, 06:37 JSTEastern Region · Fuji Five Lakes, Yamanashi PrefectureShindo in this place: 2 · Event maximum Shindo: 5−M4.920 km
- 震度2Nov 20, 2021, 08:57 JST23 wards, TokyoShindo in this place: 2 · Event maximum Shindo: 3M4.6100 km
- 震度2Nov 1, 2021, 06:14 JSTNorthern Ibaraki PrefectureShindo in this place: 2 · Event maximum Shindo: 4M5.260 km
- 震度2Oct 28, 2021, 09:55 JSTSouthern Ibaraki PrefectureShindo in this place: 2 · Event maximum Shindo: 4M4.650 km
- 震度2Jun 9, 2021, 17:27 JSTEastern Kanagawa PrefectureShindo in this place: 2 · Event maximum Shindo: 2M4.4130 km
- 震度2May 1, 2021, 10:27 JSTOff the Coast of Miyagi PrefectureShindo in this place: 2 · Event maximum Shindo: 5+M6.660 km
Ground & J-SHIS
The context below uses the place's full available history and reference models; it is not part of the 2021 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 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.
Modelled magnitude: M7.9–8.6
Read about this model #2Major active faultTachikawa fault zone立川断層帯Modelled magnitude: M6.8
Read about this model #3Major active faultFukaya fault zone深谷断層帯Modelled magnitude: M7.2
Read about this model #4Major active faultAyasegawa fault (Ina-Kawaguchi segment)綾瀬川断層伊奈－川口区間Modelled magnitude: M6.5
Read about this model #5Subduction-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 #6Major 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 #7Major 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 #8Major active faultFukaya/Ayasegawa fault zone (Kounosu-Ina segment/Ina-Kawaguchi segment)深谷断層・綾瀬川断層（鴻巣－伊奈区間と伊奈－川口区間が同時に活動）Modelled magnitude: M7.0
Read about this model #9Major active faultAyasegawa fault (Kounosu-Ina segment)綾瀬川断層鴻巣－伊奈区間Modelled magnitude: M6.5
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.
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.
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 →