To recognize the importance of interoperable emergency communications in protecting Canadians, a Specification Committee for the Canadian Profile of the Common Alert Protocol (PC-PAC) 1.0 was formed by the Federal-Provincial-Territorial Interoperability Working Group (GTI FPT) of senior emergency management officials (CSRGU), with the support of the Interoperability Development Office (BDI) of Public Safety Canada (SP). Members of the PC-PAC 1.0 Specifications Committee, including the Quebec Ministry of Public Security (MSP), are responsible for developing, approving, and managing technical content requirements based on the PC-PAC version 1.0 specification documents. For more details about the committee: https://www.securitepublique.gc.ca/cnt/mrgnc-mngmnt/mrgnc-prprdnss/capcp/index-fr.aspx. The PC-PAC is currently published in three documents: 1. Introduction to PC-PAC and set of rules; 2. Lexicon of events; 3. Location lexicon. The content of the PC-PAC location lexicon is controlled independently of other documents, as it is expected that it may have more frequent updates over time, independent of PC-PAC 1.0. As part of the update of the PC-PAC location lexicon from version 1.0, the MSP decided to generate itself the list of location references, called geocodes, and associated polygons for the province of Quebec. The dataset of alert zones used in the National Public Alerting System — called Québec en Alerte by the MSP — is the result of generating this list based on the official territorial limits of the Government of Quebec (http://geoboutique.mern.gouv.qc.ca/PDF_ZIP/Structure_CADM-20K.pdf). Geocodes and polygons are associated with the reference material from the PC-PAC location lexicon that accompanies PC-PAC 1.0. They are divided and generalized according to the territorial boundaries of regional county municipalities (RCMs) as well as municipalities, indigenous territories, and unorganized territories. The generalization of polygons was decided to ensure complete coverage of territories and reduce the weight of polygons for rapid processing by distributors during an alert. Each polygon contains 1,500 vertices and has a 250 m buffer around its actual boundary. The data architecture is the same as the lexicon of PC-PAC locations or that of Statistics Canada's Standard Geographical Classification system. Thus, the layer of areas based on the territorial boundaries of MRCs is associated with that of the census division (census division “CD”) and the layer of areas based on the territorial boundaries of municipalities, indigenous territories and unorganized territories is associated with the census subdivision (“CSD”). The Ministry of Public Security strongly recommends that organizations that want to issue or distribute emergency alerts compatible with PC-PAC 1.0 in Quebec use these geocode and polygon datasets.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**