As an individual in an effected area of Japan (well, barely affected, but still*), I just want to say two things. One, thanks for the thoughts. Two, who are you praying too? If there is an all powerful God, that being caused the earthquake and the suffering.
* Am I allowed to start a scam now saying I'm destitute and please give me bitcoin?
https://www.bitcoin.org/smf/index.php?topic=4403.0 <- scam already started, try to hijack it or at least get your fair share before they cash out the funds ; )
to answer your question, i do not pray to gods. good wishes, that may all beings be happy and free from suffering.