An alert for a potential mega-quake issued by The Japan Meteorological Agency after a magnitude 7.4 - 100 km ENE of Miyako, Japan, struck the Fukushima area, where a devastating mag 9.1 earthquake and tsunami killed thousands in 2011.

The Western Pacific continues to be gripped by volcanic and seismic activity. Last week, the Sakurajima volcano erupted, causing a large ash cloud, while the violent typhoon (equivalent to a Category 5 hurricane) Sinlaku slammed into nearby Guam, causing tens of millions of dollars in damage.

A stream of solar wind aimed directly at Earth from a colossal coronal hole on our Sun has finally reached Earth's magnetosphere, coinciding with a very powerful major quake off the coast of Honshu, Japan, this morning. Tsunami warnings have been issued.

Credit USGS.

The magnitude 7.4 - 100 km ENE of Miyako, Japan, struck the Fukushima area, where a devastating mag 9.1 earthquake and tsunami killed thousands in 2011.

An alert for a potential mega-quake was issued. 

The Japan Meteorological Agency has issued an alert for a potential mega-quake, following the magnitude 7.7 quake on Monday. The agency says residents in seven prefectures should prepare for a disaster and listen for any updates. Officials say there is an increased probability of a mega-quake along two deep-sea trenches in the Pacific Ocean.

The alert covers 182 cities and towns from Hokkaido to Chiba. Tsunami warnings lifted. The Japan Meteorological Agency issued tsunami warnings for Iwate Prefecture and the Pacific coasts of Hokkaido and Aomori Prefectures on Monday afternoon. Full story

Today's powerful quake was the 578th major quake (mag 5 or higher) so far this year. At the same time last year, 513 had been recorded and in 2024—469 . . . Major quakes (mag 5 or higher are showing a definite increase.

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MAJOR QUAKES 2025