Updated: 2026-05-05 09:00:21 (UTC+9) Ver.7
2026-05-05 08:54 (UTC+9),
OFF SANRIKU,
30km Depth,
M 5.2
by JMA
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 2026/05/05 09:00:06.
Estimated Is for Major Cities
| Max. Obs. Is | Histogram of Estimated Is |
Municipality Show All Data | Nighttime Population | Distance [km] |
| 3 | Morioka,Iwate | 300,000 | 167 | |
| 3 | Kitakami,Iwate | 94,000 | 183 | |
| 3 | Miyako,Iwate | 57,000 | 102 |
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
| Year | Region | M | Damage |
| 1677 | Rikuchu, Mutsu | 7.9 | Enpo Sanriku-oki Earthquake,Furniture damaged in Hachinohe. A tsunami was observed in Sanriku. 35 house outflows in Miyako. |
| 1896 | Off Sanriku | 8.2 | Sanriku-oki Earthquake,21,959 (343 in Aomori, 3,452 in Miyagi, 6 in Hokkaido, 18,158 in Iwate) dead by tsunami. 8,000-9,000 house outflows. 7,000 ships were damaged. The wave heights were 24.4 m in Yoshihama, 38.2 m in Ryori, 14.6 m in Taro. |
| 1901 | E Off Aomori | 7.2 | 18 dead or injured, 8 timber houses collapsed in Aomori. Some damages in Akita and Iwate. A 60 cm high tsunami was observed in Miyako, Iwate. |
| 1968 | E Off Aomori | 7.9 | Tokachi-oki Earthquake,52 dead, 330 injured, 673 houses collapsed, 3,004 partially destroyed. Observed tsunami heights were 3-5 m on the Sanriku Coast and 3 m on Cape Erimo. |
| 1994 | Off Sanriku | 7.6 | Sanriku-haruka-oki Earthquake,3 dead, 788 injured, 72 houses collapsed, 429 partially destroyed. A small tsunami was observed. |
| 2011 | Off Sanriku | 9.0 | 2011 off the Pacific coast of Tohoku Earthquake,Mega-thrust earthquake in the subduction zone along the Japan trench from off the middle of Sanriku to off of Ibaraki. 19,418 dead, 2,592 missing, 6,220 injured, 121,809 houses collapsed, 278,496 partially destroyed (as of March 2016; including some damage by aftershocks and induced earthquakes). 90% of fatalities were drownings. Most of the damage including nuclear disaster was caused by a large tsunami (height of about 40 m, according to field investigation). Maximum Is was 7. The damage by ground motion was relatively less significant than that by tsunami. |
Reference: National Astronomical Observatory of Japan, Chronological Scientific Tables, Maruzen, (2017) *partially extracted
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.
