An earthquake measuring 6.6 Mw on the moment magnitude scale struck Iburi Subprefecture in southern Hokkaido, Japan, on 6 September 2018 at 3:08 a.m. JST. The earthquake's epicenter was near Tomakomai and occurred at a depth of 35.0 kilometers (21.7 mi). The Japan Meteorological Agency (JMA) registered a magnitude of 6.7 Mj and a maximum intensity of 7 on the shindo scale. Shaking from the earthquake was felt strongly in Hokkaido and Aomori Prefecture, and shaking was felt as far away as the Kantō region. Long period ground motion (LPGM) during the earthquake reached maximum of class 4 on the JMA LPGM intensity scales. The earthquake disrupted electrical service throughout Hokkaido, leaving 5.3 million residents without power. Forty-one people were confirmed dead and six hundred and ninety-one were injured. The event is officially known as Heisei san-jū-nen Hokkaidō Iburi tōbu jishin . Magnitude 6.6 (mww), 35 km deep, 27 km ESE of Chitose, Japan — 42.69°N, 141.93°E. September 5, 2018 at 18:07 UTC. Deaths: 43 (Wikidata). Tsunami: USGS flags this quake as having caused one, or the potential for one. Felt reports to USGS: 99. Wiki link https://earthquake.usgs.gov/earthquakes/eventpage/us2000h8ty Data: US Geological Survey (public domain).