Updated: 2026-10-01 21:29:21 (UTC+9) Ver.2
Epicenter Location is Undetermined
Is Distribution
Maximum Observed Is:3
Seismic Intensity (Is) distribution is estimated from the observed data (circles) of NIED K-NET, KiK-net, JMA, and local governments that had been collected by 2026/10/01 21:29:12.
Estimated Is for Major Cities
| Max. Obs. Is | Histogram of Estimated Is |
Municipality Show All Data | Nighttime Population | Distance [km] |
| 3 | Sosa,Chiba | 37,000 | Unknown | |
| 3 | Sakura,Chiba | 170,000 | Unknown | |
| 3 | Togane,Chiba | 61,000 | Unknown | |
| 3 | Sammu,Chiba | 53,000 | Unknown | |
| 3 | Inashiki,Ibaraki | 43,000 | Unknown | |
| 3 | Katori,Chiba | 77,000 | Unknown | |
| 3 | Narita,Chiba | 130,000 | Unknown | |
| 3 | Kamisu,Ibaraki | 95,000 | Unknown |
The histogram shows frequency distribution of estimated Is derived from interpolation of the observation with 250-m mesh. The daytime and nighttime correspond to 9:00-18:59 and 19:00-8:59, respectively. The distance is measured from the epicenter to the center of the municipality.
Is Exposed-Population Estimates of Each City
5- or greater
Not Available
|
5+ or greater
Not Available
|
6- or greater
Not Available
|
6+ or greater
Not Available
|
Population exposed to Is 5- or greater are not estimated.
Major Historical Damaging Earthquakes in This Region
Historical earthquakes are unavailable until the epicenter is determined.
Seismic Hazard Information of J-SHIS
J-SHIS is a Web service by NIED, to help prevent and prepare for earthquake disaster by providing a public portal for seismic hazard information across Japan.
