Canadians are set to receive an emergency alert on their cellphones this Wednesday, but not to worry — it's only a test. 

On November 27, a national test of the Alert Ready system, Canada’s national emergency alert system, will light up compatible wireless devices, televisions and radios across the country. 

When life threatening events occur, #AlertReady could save your life. On Nov 27, test messages will be issued over TV, radio & wireless devices. Testing is necessary to ensure critical information can be sent to #Canadians in times of need: https://t.co/orDoL1tXt4 pic.twitter.com/bE5d9QyL1s

— Public Safety Canada (@Safety_Canada) November 24, 2019

"Alert Ready delivers critical and potentially life-saving alerts to Canadians through television, radio and LTE-connected and compatible wireless devices," the system's website states. 

Canadians will receive the alert at different times depending on their location. 

This is when the alerts will arrive across the country.

• Alberta: 1:55 p.m. 
• British Columbia: 1:55 p.m.
• Manitoba 1:55 p.m.
• New Brunswick: 10:55 a.m.
• Newfoundland & Labrador: 10:55 a.m.
• Northwest Territories: 9:55 a.m.
• Nova Scotia: 1:55 p.m.
• Ontario: 2:55 p.m.
• Prince Edward Island: 12:55 p.m. 
• Quebec: 1:55 p.m.
• Saskatchewan: 1:55 p.m. 
• Yukon: 1:55 p.m.
• Nunavut: No test

The alert system is meant to send out an urgent message in the case of an emergency or threat to public safety. 

Different types of alerts are sent out depending on the threat. Types of alerts include the threat of a fire, a terrorist attack, a natural disaster and more.

"The Alert Ready system was developed with many partners including federal, provincial and territorial emergency management officials, Environment and Climate Change Canada, Pelmorex, the broadcasting industry and wireless service providers," according to Alert Ready.

"Together, these partners work to ensure Canadians receive alerts immediately and know when to take action to stay safe."