Two strong earthquakes struck Nagano Prefecture in central Japan on Saturday, with preliminary magnitudes of 5.0 and 5.1. The Japan Meteorological Agency has warned residents to expect aftershocks over the coming week.

Two strong earthquakes jolted Nagano Prefecture in central Japan on Saturday, with the first measuring a preliminary magnitude of 5.0 followed by another registering magnitude 5.1, the country’s weather agency said. The Japan Meteorological Agency warned of aftershocks on a similar scale over the next week or so. No tsunami warnings were issued. The first major quake occurred at 1.20pm in Omachi and registered upper 5 on the Japanese seismic intensity scale of 7, according to the agency. At...