From what I have read, that Canary Islands mega-tsunami stuff is more hype than science. Read this tsunami FAQ put together by the International Tsunami Information Center http://www.prh.noaa.gov/itic/library/about_tsu/faqs.html. Information on the Canary Island situation is at the bottom.
Aaron
-----Original Message----- Subject: Re: [Utah-astronomy] Earth Change?
Actually, if i remember correctly, the Hilo Tsunami (circa 1930's?) was actually a "mega-tsunami". So named, because they are not cause my earthquakes and waves, but because of the displacement caused by massive land slides. That one I believe was actually caused by a landslide in the Alutian islands in Alaska.
Interesting note along those lines.... The Canary islands, will (yes, will) cause one of these mega-tsunamis which will (yes, will) cause a 50-100 foot wave, which will (yes, unfortunately, will) wipe out the majority of the eastern US coast.
http://www.sibelle.info/oped25.htm
JH.