Other then the unscheduled restarts earlier today, both servers have been stable.
Posted Apr 25, 2017 - 19:38 EDT
Identified
The reboots were done by WP Engine engineers. They have identify a known issue affecting some of their servers running PHP7 and are working on a fix.
Posted Apr 25, 2017 - 14:29 EDT
Investigating
Beginning 10 minutes two of my WP Engine servers were rebooted, anchorhost1 and anchorhost2. Website on these servers were offline briefly however appear to be coming back online within 3 to 5 minutes. Checking with WP Engine for more info.