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The earthquake early warning system provided timely alerts about the seismic events in the Japan Sea region.

Public SafetyGeologyApr 20, 2026score 0.172 posts · 0 replies across 1 instances
The thread discusses a series of earthquakes in the Japan Sea region, with initial reports indicating a smaller tremor followed by a larger one. The information includes details such as the time, magnitude, depth, and estimated maximum intensity of the earthquakes. These events are significant due to their potential impact on the region's population and infrastructure.

Claims

The earthquake early warning system provided timely alerts about the seismic events in the Japan Sea region.
Parent: Public SafetyEntity: Earthquake Early Warning SystemImpact: positiveDate: Apr 20, 2026 - Apr 23, 2026Target: Effectiveness of the earthquake early warning system

Source posts

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■■緊急地震速報(最終報)■■ 三陸沖で地震 最大震度 5強(推定) [詳細] 2026/04/20 16:52:57発生 M7.5 深さ 30km #earthquake
0 boosts · 0 favs · 0 replies · Apr 20, 2026
#earthquake
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■■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
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■■緊急地震速報(第1報)■■ 福島県沖で地震 最大震度 2(推定) [詳細] 2026/04/21 13:50:50発生 M4.0 深さ 30km #earthquake
0 boosts · 0 favs · 0 replies · Apr 21, 2026
#earthquake
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■■緊急地震速報(第1報)■■ 岩手県沖で地震 最大震度 2(推定) [詳細] 2026/04/22 01:18:07発生 M3.8 深さ 30km #earthquake
0 boosts · 0 favs · 0 replies · Apr 21, 2026
#earthquake
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■■緊急地震速報(第4報)■■ 岩手県沖で地震 最大震度 2(推定) [詳細] 2026/04/22 03:44:14発生 M4.7 深さ 30km #earthquake
0 boosts · 0 favs · 0 replies · Apr 21, 2026
#earthquake
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■■緊急地震速報(第3報)■■ 岩手県沖で地震 最大震度 2(推定) [詳細] 2026/04/22 03:44:14発生 M3.9 深さ 30km #earthquake
0 boosts · 0 favs · 0 replies · Apr 21, 2026
#earthquake
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■■緊急地震速報(第6報)■■ 岩手県沖で地震 最大震度 3(推定) [詳細] 2026/04/22 03:44:15発生 M4.8 深さ 30km #earthquake
0 boosts · 0 favs · 0 replies · Apr 21, 2026
#earthquake
@[email protected]
■■緊急地震速報(第5報)■■ 岩手県沖で地震 最大震度 3(推定) [詳細] 2026/04/22 03:44:15発生 M4.8 深さ 30km #earthquake
0 boosts · 0 favs · 0 replies · Apr 21, 2026
#earthquake
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■■緊急地震速報(第7報)■■ 岩手県沖で地震 最大震度 3(推定) [詳細] 2026/04/22 03:44:15発生 M5.2 深さ 30km #earthquake
0 boosts · 0 favs · 0 replies · Apr 21, 2026
#earthquake
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■■緊急地震速報(第6報)■■ 三陸沖で地震 最大震度 2(推定) [詳細] 2026/04/22 09:01:11発生 M5.0 深さ 30km #earthquake
0 boosts · 0 favs · 0 replies · Apr 22, 2026
#earthquake
@[email protected]
■■緊急地震速報(第5報)■■ 三陸沖で地震 最大震度 2(推定) [詳細] 2026/04/22 21:18:33発生 M4.8 深さ 30km #earthquake
0 boosts · 0 favs · 0 replies · Apr 22, 2026
#earthquake
@[email protected]
■■緊急地震速報(第6報)■■ 三陸沖で地震 最大震度 2(推定) [詳細] 2026/04/22 21:18:33発生 M4.8 深さ 30km #earthquake
0 boosts · 0 favs · 0 replies · Apr 22, 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] 2026/04/22 21:18:33発生 M4.9 深さ 30km #earthquake
0 boosts · 0 favs · 0 replies · Apr 22, 2026
#earthquake
@[email protected]
■■緊急地震速報(第2報)■■ 与那国島近海で地震 最大震度 2(推定) [詳細] 2026/04/23 05:43:25発生 M4.2 深さ 30km #earthquake
0 boosts · 0 favs · 0 replies · Apr 23, 2026
#earthquake
@[email protected]
■■緊急地震速報(第1報)■■ 与那国島近海で地震 最大震度 1(推定) [詳細] 2026/04/23 05:43:25発生 M4.0 深さ 30km #earthquake
0 boosts · 0 favs · 0 replies · Apr 23, 2026
#earthquake