Even the status page was down for a while, some said on Twitter. Power appears to be the cause of the outage, as explained on the site’s status page — once it jumped back into life:
2:46 am PDT : NA1/NA5/NA6/CS0,CS3,CS1,CS12 salesforce.com System Status
The salesforce.com NA1/NA5/NA6/CS0,CS3,CS1,CS12 instances are continuing to experience a service disruption. Power issues were detected but our technician onsite has confirmed this has been fixed. We are currently working to restore the service. Please check the status of trust.salesforce.com frequently for updates regarding this issue.
(Curated by Dennis Moore. Read the complete article here)