Yokosuka City earthquake and Shindo history
横須賀市
Earthquakes for which stations associated with Yokosuka City reported an actual Shindo observation.
Latest observation: Nov 6, 2026, 07:39 PM JSTLATEST LOCAL OBSERVATION
Latest earthquake observed in Yokosuka City
震度2
Highest Shindo observed in Yokosuka CitySource region: Off the east Coast of KantoM6.1
Local seismic profile
Since Jan 26, 2015, stations associated with Yokosuka City have reported a local reading for 301 earthquakes. Shindo 1 was most common, while the highest local level, Shindo 4, was recorded 1 times.
Latest observationNov 6, 2026
Highest local Shindo4
Observed events301Jan 26, 2015–Nov 6, 2026
Associated observation stations2JMA
Latest observation: Nov 6, 2026
Recent observed earthquakes
Earthquakes for which stations associated with Yokosuka City reported an actual Shindo observation.
震度2
Nov 6, 2026, 07:39 PM JSTOff the east Coast of Kanto
震度1M6.1 · 10 km · 232 km
Nov 3, 2026, 02:40 PM JSTNortheastern Chiba Prefecture
震度1M4.7 · 50 km · 99 km
Nov 1, 2026, 07:15 AM JSTOff the southeast Coast of Mie Prefecture
震度2M6.1 · 350 km · 291 km
Oct 29, 2026, 12:07 AM JSTNortheastern Chiba Prefecture
震度1M5.4 · 50 km · 107 km
Oct 25, 2026, 11:09 AM JSTOff the west Coast of Ogasawara Islands
震度1M7.0 · 470 km · 806 km
Oct 21, 2026, 10:04 AM JSTNorthwestern Chiba Prefecture
M4.0 · 70 km · 73 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 Nov 6, 2026 · 301 records
Observation 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: Nov 6, 2026
Recent observed earthquakes
301 observed earthquakes
- 震度2Nov 6, 2026, 19:39 JSTOff the east Coast of KantoShindo in this place: 2 · Event maximum Shindo: 3M6.110 km
- 震度1Nov 3, 2026, 14:40 JSTNortheastern Chiba PrefectureShindo in this place: 1 · Event maximum Shindo: 3M4.750 km
- 震度1Nov 1, 2026, 07:15 JSTOff the southeast Coast of Mie PrefectureShindo in this place: 1 · Event maximum Shindo: 3M6.1350 km
- 震度2Oct 29, 2026, 00:07 JSTNortheastern Chiba PrefectureShindo in this place: 2 · Event maximum Shindo: 5−M5.450 km
- 震度1Oct 25, 2026, 11:09 JSTOff the west Coast of Ogasawara IslandsShindo in this place: 1 · Event maximum Shindo: 3M7.0470 km
- 震度1Oct 21, 2026, 10:04 JSTNorthwestern Chiba PrefectureShindo in this place: 1 · Event maximum Shindo: 2M4.070 km
- 震度1Oct 8, 2026, 04:13 JSTNortheastern Chiba PrefectureShindo in this place: 1 · Event maximum Shindo: 4M4.850 km
- 震度1Oct 1, 2026, 21:27 JSTNortheastern Chiba PrefectureShindo in this place: 1 · Event maximum Shindo: 3M5.150 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
Northwestern Chiba Prefecture千葉県北西部
623
Southern Ibaraki Prefecture茨城県南部
373
Off the east Coast of Chiba Prefecture千葉県東方沖
243
Off the southeast Coast of Chiba Prefecture千葉県南東沖
213
Southern Chiba Prefecture千葉県南部
212
Northeastern Chiba Prefecture千葉県北東部
20Local 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) · 250 m · 5239657311
J-SHIS / NIEDGround conditions near an observation station
J-SHIS data for the 250 m mesh containing 横須賀市光の丘.
How to read these values
A landform class assigned to the whole 250 m mesh and used to estimate AVS30. The name alone does not determine safety, and it is model data rather than a borehole survey at the station.
The average speed of an S-wave through the upper 30 metres. A lower value generally indicates softer material that can amplify shaking more. J-SHIS uses this value to estimate the amplification shown to the right. It is not predicted Shindo.
For the same incoming wave, local ground conditions may make peak-motion velocity at the surface about 2% higher than at engineering bedrock (Vs = 400 m/s). This value describes motion velocity—it does not multiply magnitude or forecast ground acceleration.
Ground conditions can change over short distances. These values do not rate the whole place or the safety of a building, and they cannot predict an earthquake. Source: J-SHIS (NIED), V4 model; processed for presentation by JISHINDESU.
Reference model · not a forecast J-SHIS (NIED) · A14201
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 faultMiura-hanto fault group (Main part/Takeyama fault zone)三浦半島断層群主部武山断層帯
Modelled magnitude: M6.5
Read about this model #2Subduction-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 #3Major active faultMiura-hanto fault group (Main part/Kinugasa/Kitatake fault zone)三浦半島断層群主部衣笠・北武断層帯Modelled magnitude: M6.7
Read about this model #4Major active faultMiura-hanto fault group (Southern part)三浦半島断層群南部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 #6Major active faultKamogawa-teichi fault zone鴨川低地断層帯Modelled magnitude: M6.7
Read about this model #7Other active faultKamogawa-techi fault zone kita fault鴨川低地断層帯北断層Modelled magnitude: M6.8
Read about this model #8Major 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 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 Explained: What Levels 0–7 Mean
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 →