Miwako Nishimura

In the coastal regions of three of Japan’s northeastern prefectures, aftershocks of at least magnitude 3 on the Japanese 1—7 shindo scale, still rattle survivors every 2—3 hours.

Japanese authorities warned on Sunday that the Fukushima Daiichi No. 3 Reactor could explode.

The death tolls at the epicenter of the Great Earthquake of the Northeast and Kanto—as it is now being called in Japan—is quickly mounting as authorities take toll of the situation after a long difficult night for many.

TOKYO—With the city’s transportation system paralyzed by the powerful 8.9-magnitude earthquake Friday afternoon local time, Tokyo residents had no choice but to head home by foot, across the sprawling metropolis where long commutes are common.

Democratic Party of Japan, Japan’s ruling party, lost control of the upper house to the Liberal Democratic Party.