This will necessarily be short, as information is just beginning to come in, but:
SYDNEY (Reuters) - A series of tsunamis smashed into the Pacific island nations of American and Western Samoa killing possibly more than 100 people, destroying villages and injuring hundreds, officials said on Wednesday.
A Pacific-wide tsunami warning was issued after a huge 8.0 magnitude undersea quake off American Samoa, with reports of a small tsunami reaching New Zealand and rising sea levels in several South Pacific island nations.
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Update [2009-9-29 23:3:30 by musing85]: CNN says a plane carrying relief aid is on its way, and notes that Japan has issued a tsunami warning for its east coast, though the impact is expected to be small.
Update [2009-9-29 23:3:30 by musing85]: The U.S. Geological Survey's earthquake information page.
Update [2009-9-29 23:16:46 by musing85]:: To clarify, the Pacific-wide tsunami warning has been cancelled.