| This earthquake (0238 UTC) and tsunami was below the threshold for issuing an international tsunami information bulletin. For the event, the JMA issued a domestic Tsunami Attention for the northern part of the the Japan Sea Coast of Hokkaido, Japan at 0437 UTC. This was followed immediately by two Tsunami Information bulletins and a Cancellation at 0526 UTC. The PTWC issued only its unofficial, courtesy earthquake observatory message. |
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