The Japan Sea off the Sanriku coast experienced a series of earthquakes with increasing magnitudes and depths, indicating a potential for stronger seismic activity.
Claims
The Japan Sea off the Sanriku coast experienced a series of earthquakes with increasing magnitudes and depths, indicating a potential for stronger seismic activity.
Parent: Public SafetyEntity: Earthquake Early Warning SystemImpact: negativeDate: Apr 20, 2026Target: The effectiveness and reliability of the earthquake early warning system in providing timely and accurate information.
Source posts
■■緊急地震速報(第1報)■■ 三陸沖で地震 最大震度 2(推定) [詳細] 2026/04/20 17:30:07発生 M4.7 深さ 20km #earthquake
0 boosts · 0 favs · 0 replies · Apr 20, 2026
#earthquake
■■緊急地震速報(第4報)■■ 三陸沖で地震 最大震度 2(推定) [詳細] 2026/04/20 17:32:46発生 M5.2 深さ 10km #earthquake
0 boosts · 0 favs · 0 replies · Apr 20, 2026
#earthquake
■■緊急地震速報(第8報)■■ 三陸沖で地震 最大震度 3(推定) [詳細] 2026/04/20 17:32:46発生 M5.5 深さ 30km #earthquake
0 boosts · 0 favs · 0 replies · Apr 20, 2026
#earthquake
■■緊急地震速報(第9報)■■ 三陸沖で地震 最大震度 3(推定) [詳細] 2026/04/20 17:32:46発生 M5.4 深さ 30km #earthquake
0 boosts · 0 favs · 0 replies · Apr 20, 2026
#earthquake