"The Hour (Last Day) will not be established until earthquakes will be very frequent." (Bukhari) This is such a relevant Hadith which puts the Japan earthquake into perspective. May Allah keep them and all of us safe. Ameen
Aisha (RA) reported Allah's Apostle (may peace be upon him) saying: If a company of Muslims numbering one hundred pray over a dead person, all of them interceding for him, their intercession for him will be accepted. [Muslim Book 4, Number 2071]