The United States Embassy in Japan has compiled an earthquake survival checklist
should you require further information:
http://japan.usembassy.gov/e/acs/tacs-7111.html
In Japan any phone can be used to make emergency calls free of charge.
Police, Fire and Ambulance (English-speaking operator on duty 24 hours a day) - dial 110
Foreign Residents Advisory Center, 03-5320-7744, Open weekdays 9:00 - 12:00, 13:00-16:00
Health and Medical Information Center, Emergency Interpreter Service, (1) 03-5285-8181; (2) 03-5285-8185