How are they different? – CornellALERT messages are emergency notifications sent to the Cornell community any time there is an imminent threat to the health or safety of the community. This could include such natural incidents as a tornado or other dangerous weather, events such as an explosive device, active threat or a change in the university’s operating status due to an emergency or weather event. Cornell community members receive CornellALERT emergency messages via email and on the mobile phone number listed in their Cornell personal contact information. I would also encourage you to download RAVE Guardian, a free mobile app that turns your smartphone into a personal safety device.