What is the UH outdoor warning siren system and how does it work?
The University of Houston’s Outdoor Warning
Siren System is part of the emergency alert notification system.
The system is designed to alert students, faculty, staff and
visitors of impending outdoor danger.
The system is activated by Department of Public Safety in the
event of an emergency when it may be unsafe to be outdoors. It
provides a quick method of notifying the entire main campus with
an audible tone that can be heard outdoors alerting students,
faculty and staff to seek shelter indoors. During a real
emergency, the system is used in conjunction with other
communication channels like email, the UH Emergency Operations
Center website (www.uh.edu/emergency)
and text messaging.
Types of Incidents
The types of incidents that may require activation of the siren
• Severe weather conditions (Tornado warning or other dangerous
• Major hazardous material incidents
• An armed and hostile individual on campus
• Other conditions that may require an emergency shelter in
For frequently asked questions about the outdoor warning siren
system, please visit:
In the event of an actual emergency, the PIER notification
system will be used in conjunction with the siren system to
disseminate further information to the UH community. All outdoor
warning siren alerts are accompanied by PIER alert message. All
community members are encouraged to keep their contact
information up-to-date in PeopleSoft so they can receive
emergency messages. You can find instructions for updating your
cell phone number, email address and other contact information
On the first Wednesday of each month, an audible test of the
outdoor warning siren system is conducted at 1 p.m.