Environment and Climate Change Canada issues Winter weather and cold alerts across Canada.
In York Region, the following criteria is used for Winter weather alerts:
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Winter Alert Type
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Issued by
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Criteria for Alert
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Cold Weather Alert
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York Region
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Temperatures of minus
15 degrees Celsius or colder, with or without wind chill
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Extreme Cold Weather Alert
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Environment Canada
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Temperature or wind chill is expected to reach minus 30 degrees Celsius for at least two hours
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Extreme cold warnings are issued when very cold temperatures or wind chill creates an increased risk to health, such as frostbite and hypothermia. Risks are greater for young children, older adults, people with chronic illnesses, people working or exercising outdoors, and those without proper shelter and clothing.
Find out how you can stay safe in the cold and winter months.
Environment & Climate Change Canada issues Heat Warnings across Canada.
A Heat Warning is issued when there is a forecast of two or more consecutive days with daytime maximum temperatures of 31°C (87.8°F) or warmer, together with nighttime minimum temperatures of 20°C (68°F) or warmer or when there is a forecast of two or more consecutive days with humidex values expected to reach 40°C (104°F) or higher.
Find out how you can stay safe.
Alert Ready delivers critical and potentially life-saving alerts to Canadians through television, radio and LTE-connected and compatible wireless devices.
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.
Together, these partners work to ensure Canadians receive alerts immediately and know when to take action to stay safe.
The City of Markham will use an Alert Ready Notification if there is an emergency/disaster that impacts the City.
During an Alert Ready notification, you will hear a distinctive tone on television, radio or on your wireless device, please pay attention and take action right away.
Notice for the Visually and Hearing Impaired: Alternate formats of the alerts may be issued. However, not every alerting authority or device has the capability to produce or receive these formats. Broadcasters may use text-to-speech software to create an audio version of an alert message. Emergency alerts may be read to the recipient if your device supports this feature. The vibration feature that accompanies emergency alerts is available to alert Canadians. Please contact your wireless provider for more services which may be available to you.
Learn More
