Here are links for the websites, in English and other languages, offering information about the Tohoku Region Pacific Coast Earthquake.

Earthquake Information
Accessible through iPhone

FMわぃわぃ
10 languages Audio info (MP3) also available

CALL US
Over the phone translation service, offered free in disaster affected areas　TEL：050-5814−7230
※Call charge: 10 yen for 3 minutes from landline phones
Time and languages：
from 9:00 to 20:00---English, Chinese, Korean, Portuguese, Spanish
from 20:00 to 9:00---English, Chinese, Korean

Facebook Earthquake updates for foreigners in Japan

Google Disaster Information
Disaster related information, Emergency shelters
'Person Finder' in English, Chinese, Korean, Portuguese