The earthquake early warning system effectively alerts residents in the Sanriku region about potential seismic activity.

Public Safety WeatherApr 20, 2026score 0.172 posts · 0 replies across 1 instances

The thread reports two earthquake alerts in the Japan Sea off the Sanriku coast, with magnitudes M4.7 and M4.8, indicating a potential seismic event. The alerts highlight the region's vulnerability to earthquakes and the need for preparedness.

Claims

Parent: Public SafetyEntity: Earthquake Early Warning SystemImpact: positiveDate: Apr 20, 2026 - Apr 21, 2026Target: Effectiveness of the earthquake early warning system

Source posts

@[email protected]

■■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

@[email protected]

■■緊急地震速報(第2報)■■ 三陸沖で地震 最大震度 2(推定) [詳細] 2026/04/20 17:30:07発生 M4.8 深さ 20km #earthquake

0 boosts · 0 favs · 0 replies · Apr 20, 2026

#earthquake

@[email protected]

■■緊急地震速報(最終報)■■ 三陸沖で地震 最大震度 2(推定) [詳細] 2026/04/20 23:15:27発生 M4.7 深さ 20km #earthquake

0 boosts · 0 favs · 0 replies · Apr 20, 2026

#earthquake

@[email protected]

■■緊急地震速報(第3報)■■ 三陸沖で地震 最大震度 2(推定) [詳細] 2026/04/21 14:19:56発生 M4.6 深さ 20km #earthquake