UPDATE (4pm): Both rides are back to normal operations. Original story below.
Yesterday marked the first day of daily operations where Flight of Passage and Na’vi River Journey experienced full evacuations. Well, reports are coming in from Twitter of another evacuation this morning.
Big evacuation at Flight of Passage #visitpandora everyone out of the building for emercency #disneyworld pic.twitter.com/SFPgC0FmVN
— ??PixieDust.be?? (@Pixiedust_be) June 9, 2017
Both attractions are currently listed as closed on the My Disney Experience app. Yesterday, Disney said the issue was a fire alarm sensor being activated. Presumably both attractions are impacted by the same issue today.
We will update the story as more details become available.