This continues to occur on n426 at seemingly random intervals. So far they tend to last 8-12 minutes, though just recently I had one last from 2:39 to 2:58 PM CT.
Support is aware of the issue (Case 09090667, if any Meraki folks are haunting the forums today) and has notified the product team. I was able to get support on the line while the issue was occurring and they were able to reproduce. Sounds like there's at least one other ticket reporting similar issues.
Anyone else having short outages on their nodes?
EDIT: Added case #