McMaster’s Campus Safety Services will conduct annual testing of the campus Siren Alert and emergency notification systems on Thursday, Feb. 5, 2026.
Around 10:20 a.m., members of the campus community who have the McMaster Safety App installed on their smartphone will receive notice of testing. Similar alerts will also appear on digital screens across campus and on laptops with the Alertus app installed.
Shortly afterward, both outdoor and indoor sirens will be tested. The test will include a recorded “THIS IS A TEST” message, followed by a full volume siren wail.
Indoor sirens will sound in the following buildings:
- McMaster University Student Centre (MUSC)
- Michael G. DeGroote Centre for Learning and Discovery (MDCL)
- David Braley Athletic Centre (DBAC)
- Ivor Wynne Centre and David Braley Athletic Centre (IWC)
Students, faculty and staff are encouraged to download the McMaster SafetyApp for safety alerts, such as campus closures and emergency instructions. The app is available for free download on the Apple and Android app store.