Japan is on alert after a magnitude 7.5 earthquake struck its northern regions late on Monday, prompting tsunami warnings and a rare government advisory about the possibility of a “megaquake” over the ...

Japan’s weather agency has issued its highest-level warning that a megaquake could follow Monday’s 7.5-magnitude tremor. Authorities urged anyone living near the Pacific coast to remain vigilant ...

A tsunami warning is displayed on a television in Yokohama, near Tokyo, Monday, Dec. 8, 2025, after a strong earthquake hits off Japanese northern coast, tsunami ...