Update: A word from National AJET:
Don’t add to sensationalist rumors. If you are posting information on facebook, twitter and other media outlets, please make sure that you use credible sources. Include your source and as much information as possible.
Watch live coverage in English at the BBC online–features live text feed. Up-to-date, accurate, and bilingual expat approved.
Finally, NHK World’s English coverage is here.
Learn earthquake-related vocabulary (English/Japanese) at Japan Newbie. Also has a lot of vocab about the nuclear plant situation.