Tsunami warning in Japan from Chile quake

Tsunamis can travel across the ocean at 1000 km/hr (600 mph), although they are barely felt until the wave amplitude builds up when the wave feels ocean bottom near the coast.  But given the 10,000 miles across the ocean from Chile to Japan (here is a nice Java applet to calculate geographic distances), that's 20 hours!

Here was the warning put out by the Japan Meteorological Agency:

Tsunami Warning/Advisory
Issued at 09:33 JST 28 Feb 2010

******************Headline******************
Major Tsunami and Tsunami have been issued.
  PACIFIC COAST OF TOHOKU
  PACIFIC COAST OF HOKKAIDO
  JAPAN SEA COAST OF AOMORI PREF.
  KANTO
  IZU/OGASAWARA ISLANDS
  TOKAI
  PACIFIC COAST OF KINKI/SHIKOKU
  OKAYAMA PREF.
  ARIAKE SEA AND YATSUSHIRO SEA
  EASTERN PART OF KYUSHU
  KAGOSHIMA PREF.

Evacuate from the seashore immediately to the safe places near the above coasts.
Tsunami attentions are in effect at some of the other coasts now.

***********About Tsunami Forecast************

Tsunami height is expected to be 3 meters or more, Keep careful watch on tsunamis.

Tsunami height is expected to be up to 2 meters, Keep watch on tsunamis.

Tsunami height is expected to be about 0.5 meters, Pay attention to tsunamis.