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A potential mega-quake in northern Japan has been issued as an alert following a M7.5 tremor that has triggered a tsunami.

Public SafetyGeopoliticsPoliticsApr 20, 2026score 0.272 posts · 0 replies across 2 instances
Multiple posts report a potential mega-quake in northern Japan following a M7.5 tremor that has triggered a tsunami, with observations of an 80cm tsunami wave. The alerts highlight the immediate danger and potential for significant disaster.

Claims

A potential mega-quake in northern Japan has been issued as an alert following a M7.5 tremor that has triggered a tsunami.
Parent: Natural DisastersEntity: Earthquake and TsunamiImpact: negativeDate: Apr 20, 2026Target: Potential mega-quake and tsunami in northern Japan

Source posts

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NHK: Alert for potential mega quake issued, tsunami warnings lifted https://www3.nhk.or.jp/nhkworld/en/news/20260420_300/ #Japan #earthquake
5 boosts · 0 favs · 0 replies · Apr 20, 2026
#japan#earthquake
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Alert for potential mega #quake issued, tsunami warnings lifted | NHK 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 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. https://www3.nhk.or.jp/nhkworld/en/news/20260420_300/
1 boosts · 0 favs · 0 replies · Apr 20, 2026
#quake
@[email protected]
NHK:Alert for potential mega quake issued, tsunami advisories lifted "...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 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 municipalities in the prefectures of Hokkaido, Aomori, Iwate, Miyagi, Fukushima, Ibaraki, and Chiba. ..." https://www3.nhk.or.jp/nhkworld/en/news/20260421_300/ #earthquake #megaquake
7 boosts · 0 favs · 1 replies · Apr 20, 2026
#earthquake#megaquake
@[email protected]
Alert issued for a potential mega-quake in northern Japan following a M7.5 tremor that has triggered tsunami. https://www3.nhk.or.jp/nhkworld/en/news/20260420_300/
0 boosts · 0 favs · 0 replies · Apr 20, 2026
@[email protected]
Alert issued for a potential mega-quake in northern Japan following a M7.5 tremor that has triggered tsunami. www3.nhk.or.jp/nhkworld/en/ne... 80cm tsunami observed, warning...
0 boosts · 0 favs · 0 replies · Apr 20, 2026