EBMUD recommends customers take some simple steps to be prepared for an emergency. Downloadable documents at this page.
LastPass users can add documents, PDF files, and images as attachments to Secure Notes . If there are files that you want to keep that shouldn’t be stored unencrypted on your machine or that need to be portable, then LastPass is the place to back them up.
An excellent blog post on what to do if your MySQL database server isn't working right because an InnoDB table has been corrupted. I've used this process myself and it works like a charm. Knowledge of MySQL in particular and RDBMSes in general is required.
A worldwide volunteer system of radio hams who provide limited net.access during emergencies so that people can communicate.
The database of radio scanner frequencies at radioreference.com. Curious about what's happening in your area? Tune in and give a listen.
How to interactively edit the mail queue of a Postfix server to delete messages, clean up junk, or other stuff. Requires administrative access. Read the whole thing before you do anything.
Archived.
emcomm system designed for emergency situation use when the communications grid is offline. Dedicated hardware base stations and on-board webapps. Registered users can get access to the data, others cannot. encryption Smartphone app for accessing the services. Supposedly the app is p2p as well. GWOB and Frank Sandborn are involved in the project; good.
A site that tracks tornados in the US. Notes their severity and location.