1700 Japan tsunami linked to massive North American quake
WASHINGTON - Guided by Japanese writings from an era of shoguns, an international team of scientists today reported new evidence that an earthquake of magnitude 9 struck the northwestern United States and southwestern Canada three centuries ago. Their findings are likely to affect the region's precautions against future earthquakes and tsunamis.
http://www.eurekalert.org/pub_releases/2003-11/agu-1jt112003.php