According to Apple's status page, multiple iCloud services have been experiencing various issues for six hours straight. “Users may experience slower than normal response when using most iCloud services,” reads a notice on the webpage.
More than a dozen iCloud services were affected at post time, with many services going completely offline.
UPDATE: Apple said that all services were restored as of 6:30am PT, adding that the outages affected a whopping 40 percent of iCloud users.