UPDATE: Hogwarts Express was operating again at both Universal Orlando stations at 5:01 p.m. EST Saturday. The interruption lasted about 6 hours and 35 minutes.
Original report
Hogwarts Express remained down at both Universal Orlando stations at 3:51 p.m. EST Saturday, more than five hours after the interruption began.
The interruption started around 10:26 a.m. CrowdLevels showed the Hogsmeade station at Islands of Adventure and the King’s Cross station at Universal Studios Florida unavailable in the same observation.
The two rows represent the endpoints of one train attraction, so this is one interruption rather than two separate ride outages. Neither row was marked as a planned closure.
Islands of Adventure was scheduled to operate from 9 a.m. to 7 p.m. Saturday. Universal Studios Florida was scheduled from 10 a.m. to 7 p.m.
No cause or reopening estimate was available. Status can change during the day; check the linked park pages for the latest CrowdLevels status.