Final answer:
The word 'imminent' in the passage means that the tsunami is likely to happen soon or in the near future.
Step-by-step explanation:
In the given context, the meaning of the word 'imminent' can be determined by considering the information provided. The passage states that a potentially dangerous distant seismic event has occurred, which may later impact the watch area with a tsunami. Therefore, 'imminent' means that the tsunami is likely to happen soon or in the near future.
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