This graphic, from Russia’s Ria Novosti, does a good job of explaining the differences between a big earthquake and a really big one.
First ground photo of the tsunami in Japan following a massive 8.9-magnitude earthquake (twitpic)
Based on all available data, a tsunami may have been generated by this earthquake that could be destructive on coastal areas even far from the epicenter. An investigation is underway to determine if there is a tsunami threat to Hawaii. If tsunami waves impact Hawaii the estimated earliest arrival of the first tsunami wave is 2:59 a.m. HST Friday, March 11.The Pacific Tsunami Warning Center • Regarding whether or not the Japanese tsunami will hit the U.S. Short answer: Possibly Hawaii (there’s a tsunami watch), likely not California.
An office tower burns in Tokyo, Japan after a massive 8.9-magnitude earthquake struck Friday afternoon. (Reuters)
First ground photo of tsunami damage following a massive 8.9-magnitude earthquake in Japan (twitpic)
People take shelter as a ceiling collapses in a bookstore during an earthquake in Sendai, northeastern Japan March 11, 2011. (Kyodo / Reuters / Via MSNBC)