2018-04-09, Japan: Overnight Monday (08/09 April, local time), a magnitude 5.6 M earthquake has occurred in western Japan. The weather service warned of further aftershocks. At first, there was no tsunami warning. The epicenter in the prefecture of Shimane about 750 kilometers west of Tokyo at a depth of 7.9 kilometers. At least four people were injured in the city of Oda by the quake. The local authorities reported building damage and cracks in roads. According to this, around 50 households were without electricity, around 100 had no water.
Earthquakes of this magnitude can cause damage to buildings and infrastructure. Local authorities may order inspections of runways and rail-/road-networks to assess damage. Temporary transport and traffic disruptions may occur.
AFP, dpa, Japan Meteorological Agency, Japan Today
2018-04-08, Japan: Moderate magnitude 5.6 M coastal earthquake
Earthquakes of this magnitude can cause damage to buildings and infrastructure. Transport and infrastructure disruptions are to be expected.
It is unlikely that a destructive tsunami was generated by a coastal earthquake of this magnitude.