Ibaraki earthquake and Shindo history in 2020
茨城県
This annual view includes only earthquakes from 2020 for which stations associated with Ibaraki recorded Shindo.
Data period: 1 January–31 December 2020In 2020, stations associated with Ibaraki reported local Shindo for 211 earthquakes. The highest local level recorded that year was Shindo 5−.
How observations were spread across 2020
The largest number of observed earthquakes was in April: 22.
Observed earthquakes by month
- Jan20
- Feb20
- Mar10
- Apr22
- May16
- Jun15
- Jul20
- Aug19
- Sep22
- Oct16
- Nov11
- Dec20
If several earthquakes reached the same highest local Shindo, we show the most recent one. Monthly counts depend on station coverage and imported records; they do not establish a seasonal pattern or predict the next earthquake.
Observation history · 2020
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 · 2020
211 observed earthquakes
- 震度4Dec 30, 2020, 09:35 JSTNorthern Ibaraki PrefectureShindo in this place: 4 · Event maximum Shindo: 4M5.160 km
- 震度1Dec 29, 2020, 04:24 JSTOff the south Coast of Wakayama PrefectureShindo in this place: 1 · Event maximum Shindo: 1M4.4440 km
- 震度1Dec 29, 2020, 04:19 JSTSouthern Ibaraki PrefectureShindo in this place: 1 · Event maximum Shindo: 1M2.840 km
- 震度1Dec 29, 2020, 01:15 JSTOff the Coast of Fukushima PrefectureShindo in this place: 1 · Event maximum Shindo: 2M4.050 km
- 震度1Dec 27, 2020, 04:09 JSTOff the Coast of Ibaraki PrefectureShindo in this place: 1 · Event maximum Shindo: 1M3.450 km
- 震度2Dec 25, 2020, 04:40 JSTOff the Coast of Ibaraki PrefectureShindo in this place: 2 · Event maximum Shindo: 2M3.950 km
- 震度1Dec 23, 2020, 09:03 JSTOff the Coast of Ibaraki PrefectureShindo in this place: 1 · Event maximum Shindo: 1M3.550 km
- 震度3Dec 21, 2020, 02:23 JSTOff the east Coast of Aomori PrefectureShindo in this place: 3 · Event maximum Shindo: 5−M6.310 km
Regional context
The context below uses the place's full available history and reference models; it is not part of the 2020 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: M7.9–8.6
Read about this model #2Major active faultFukaya fault zone深谷断層帯Modelled magnitude: M7.2
Read about this model #3Other active faultTakahagi-fukin suite高萩付近推定Modelled magnitude: M6.9
Read about this model #4Other active faultIdosawa fault井戸沢断層Modelled magnitude: M7.0
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 #6Other active faultTanagura fracture zone seien fault棚倉破砕帯西縁断層Modelled magnitude: M7.0
Read about this model #7Major 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 #8Subduction-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 #9Major 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 #10Major 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 #11Major 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 #12Major 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.
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.
430 Observed eventsShindo 4
→828 Observed eventsShindo 4
→1,227 Observed eventsShindo 5−
→807 Observed eventsShindo 5−
→390 Observed eventsShindo 4
→1,796 Observed eventsShindo 5+
→1,070 Observed eventsShindo 5−
→1,219 Observed eventsShindo 5−
→932 Observed eventsShindo 5−
→832 Observed eventsShindo 5−
→606 Observed eventsShindo 5−
→929 Observed eventsShindo 4
→1,207 Observed eventsShindo 4
→604 Observed eventsShindo 4
→531 Observed eventsShindo 5−
→463 Observed eventsShindo 5−
→1,770 Observed eventsShindo 5−
→913 Observed eventsShindo 4
→248 Observed eventsShindo 4
→679 Observed eventsShindo 5−
→619 Observed eventsShindo 4
→1,413 Observed eventsShindo 5−
→435 Observed eventsShindo 4
→613 Observed eventsShindo 5−
→630 Observed eventsShindo 4
→354 Observed eventsShindo 3
→1,024 Observed eventsShindo 5−
→482 Observed eventsShindo 5−
→424 Observed eventsShindo 4
→1,126 Observed eventsShindo 4
→520 Observed eventsShindo 5−
→921 Observed eventsShindo 5−
→914 Observed eventsShindo 5−
→1,081 Observed eventsShindo 5−
→400 Observed eventsShindo 4
→888 Observed eventsShindo 5−
→1,435 Observed eventsShindo 5−
→870 Observed eventsShindo 5−
→500 Observed eventsShindo 5−
→460 Observed eventsShindo 5−
→330 Observed eventsShindo 4
→187 Observed eventsShindo 4
→Understand local Shindo in context
Guides to this place’s history, seismic intensity and notification tools.
Shindo is Japan’s earthquake intensity scale. See what shaking each level means, from 0 to 7, and why a local Shindo reading 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 →