Tsunami Safety Protocols: Understanding Alert Criteria After Recent Seismic Activity No tsunami warning has been issued by the National Tsunami Warning Center (NTWC) following recent seismic activity. While earthquakes often …
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Iwate
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Japan Issues Warning After 7.7-Magnitude Quake Strikes North On Monday, April 20, 2026, a powerful 7.7-magnitude earthquake struck in the Pacific waters off northern Iwate Prefecture, Japan, prompting a tsunami …