Update: As of 14:19 PDT, this issues has been resolved.
Due to unexpected issues during a maintenance, some users were not able to get to twitter.com or load mobile timelines from 13:55 until 14:19 PDT. We apologize for the inconvenience.
Some users may be experiencing issues reaching twitter right now.
Our engineers are currently working to resolve this.
Update: This issue has been resolved.
Due to an error in a routine change, Twitter was not available from 1:08pm PDT to 1:33pm PDT. We rolled back the erroneous change as soon as we identified the issue. Additionally, some users may have experienced Tweet delivery delay from 1:33pm PDT and 1:53pm PDT. We apologize for the inconvenience.
Some users may be experiencing issues accessing Twitter. Our engineers are currently working to resolve the issue.
Some web users may be experiencing empty timelines and some users may be experiencing an issue with Twitter on mobile devices. Our engineers are currently working on this issue.
Update: This issue is resolved as of 6:37pm PST.