Ministère de la Sécurité publique

Types of Alert

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Test message for public broadcast.

Civil Alert

Civil emergency

Human activities causing disruption of services, or requiring some degree of law enforcement measures.

Geophysical Alerts


A down slope movement of masses of soil and rock material under the force of gravity. Landslides can occur on many different types of terrain and pose a potential threat to the communities and infrastructure that lie in their path.


A sudden release of energy in the earth’s crust giving rise to seismic waves that can cause substantial damage, especially in urban environments.

Fire Alerts

Forest Fire

A wildfire or prescribed fire burning across a forested area, grassland or alpine tundra vegetation, and that poses a threat to people’s safety or property.

Industrial Fire

A large fire in an industrial building or complex that poses a threat to health or property.

Urban Fire

Major fire with the potential to cause large-scale damage to multiple commercial or residential properties.

Brush fire

A fire involving natural combustibles, especially grass, brush or trees, that may impact neighbouring communities.

Flood Alerts

Dam Overflow

An overflowing or failing of a dam or reservoir that threatens areas downstream. An alert is issued only in the case of imminent flooding.

Flash Flood

Sudden surge of water causing immediate flooding, often the result of rapid snowmelt, ice jams or heavy rain. A flash flood is a life-threatening danger, as there is little or no prior warning of such events.

Hazardous Materials Alerts

Biological Hazard

An organism or organism-derived substance that poses a threat to human health, and could easily be transmitted between organisms.

Chemical Hazard

A chemical substance that could, if misused or improperly released, result in psychological disorientation or serious injury such as disability or even death.

Explosive Hazard

Potentially hazardous substance or device that could produce an explosion, for instance through very rapid release of gases and heat.

Radiological Hazard

Potentially hazardous material in a concentration sufficient to harm the environment or human health.

Missing Person Alert

Amber Alert

An Amber alert is issued by the Sureté du Québec or the Service de Police de la Ville de Montréal when a child has been abducted, and it is believed their life is in grave danger. Amber alerts relay immediate and up-to-date information to the public and request their assistance in bringing about the safe and swift return of the child.


The SILVER Alert pilot project will be implemented in the regional county municipalities (RCMs) of Vallée-de-l’Or, Drummond, and Joliette for a period of one year starting in the fall of 2022.

The purpose of a SILVER Alert is to inform the public of the disappearance of a person living with a diagnosed major neurocognitive disorder (MND), such as Alzheimer’s, and whose circumstances cause concern for the missing person’s health and safety. Seniors age 60 and older who have MND-like symptoms but have not been formally diagnosed may also be subject to a SILVER Alert.  

The Sûreté du Québec will be able to trigger a SILVER Alert if specific criteria are met, such as when a person with a diagnosis or symptoms of an MND is missing, when a minimal amount of information about the person and the situation is available, and when there is an imminent risk to the person’s life and an intrusive alert would be useful in getting the public’s help to locate them.  

SILVER Alerts will be issued only on cellphones and will be limited to localized search areas so that the public can, through their vigilance, provide information to the police to locate missing persons as quickly as possible.

Storm Alert

Severe thunderstorms

A severe thunderstorm brings heavy rainfall with wind gusts of 130 km/h or more and/or hail 7 cm or greater in diameter, in combination with extreme weather conditions that can cause flooding, falling trees, power outages, and road blockages.

Environment and Climate Change Canada (ECCC) is responsible for issuing severe thunderstorm warnings in Québec. To find out the criteria ECCC uses to issue a severe thunderstorm warning or watch,go to the ECCC website.


A tornado is a violently rotating column of air extending between a cloud base and the surface (when over water, it is called a waterspout). While often depicted as a funnel with the narrow end on the bottom, there is no typical tornado. Tornadoes exhibit a high degree of variability in their appearance, strength, speed, direction of movement, and duration.

It's Environment and Climate Change Canada (ECCC), which is responsible for issuing tornado alert for the province of Québec. When ECCC determines that there is an immediate or real threat to life or safety of persons, the tornado alert is automatically distributed on Québec En Alerte.

To learn more about the criterias for issuing a tornado alert by ECCC, please consult his website.

Public Service Alert

911 Service

This signals a 911 service disruption or outage.

Other Alerts

Other types of alert

This category covers all events other than those set out above that pose a specific threat to the safety or lives of people in Québec at a given moment.

Last updated: November 9, 2017