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A significant earthquake with a magnitude of M7.7 occurred near the Sanriku coast, triggering tsunami warnings.

Public SafetyTsunami AlertsApr 20, 2026score 0.302 posts · 1 replies across 1 instances
The thread reports two earthquakes occurring near the Sanriku coast, with the first being a larger M7.7 earthquake at a depth of 19km and the second a smaller M4.5 earthquake at a depth of 10km. Both events have triggered tsunami warnings, highlighting the potential for significant impact on the region.

Claims

A significant earthquake with a magnitude of M7.7 occurred near the Sanriku coast, triggering tsunami warnings.
Parent: Natural DisastersEntity: EarthquakeSub-entity: Sanriku CoastImpact: negativeDate: Apr 20, 2026Target: The occurrence and impact of the earthquake and associated tsunami warnings.
Tsunami warnings have been issued following the M7.7 earthquake near the Sanriku coast, indicating potential for significant coastal impact.
Parent: Tsunami AlertsEntity: Tsunami WarningSub-entity: Sanriku CoastImpact: negativeDate: Apr 20, 2026Target: The issuance and implications of tsunami warnings.

Source posts

@[email protected]
ℹ️ 最大震度5強 震源･震度情報 20日16時52分頃発生 震源三陸沖/深さ19km/規模M7.7 津波警報等（大津波警報・津波警報あるいは津波注意報）を発表中です。 この地震について、緊急地震速報を発表しています。
1 boosts · 0 favs · 1 replies · Apr 20, 2026
@[email protected]
ℹ️ 最大震度1 震源･震度情報 20日20時28分頃発生 震源三陸沖/深さ10km/規模M4.5 津波警報等（大津波警報・津波警報あるいは津波注意報）を発表中です。
0 boosts · 0 favs · 0 replies · Apr 20, 2026