The elements are expected to affect the provinces of New Brunswick, Nova Scotia and Prince Edward Island, as well as the western part of Newfoundland and northern Quebec.
Earlier, Dorian weakened to the second category.
According to the latest information, at least 20 people became victims of a hurricane in the Bahamas.
Climatologist, head of the Climate and Energy program of the World Wide Fund for Nature, Alexei Kokorin, in an interview with Vzglyad noted that it is impossible to prevent such a hurricane.