Storm Dorian with winds of 160kmh has struck the Canadian province of Nova Scotia, toppling trees and cutting power to more than 450,000 homes.
There were no reports of injuries due to the storm so far.
Canada's Public Safety Minister said the military would be deployed to help recovery efforts, and urged those living near the seashore to evacuate as a precaution.
"The safety of Canadians is our number one priority and we're ready to help Atlantic Canada through this storm," Prime Minister Justin Trudeau said on Twitter.
After Nova Scotia, Dorian is expected to move toward Prince Edward Island and on Sunday reach Newfoundland, the Canadian Hurricane Centre projected.
Earlier, Dorian ripped into the Bahamas earlier this week, leaving a trail of destruction and death.
Qatar's prime minister said on Sunday that efforts to reach a new ceasefire in Gaza have made some progress but an agreement between Israel and Hamas to end the war remains elusive.
A huge blast most likely caused by the explosion of chemical materials killed at least 18 people and injured more than 700 on Saturday at Iran's biggest port, Bandar Abbas, Iranian state media reported.
The UN Refugee Agency (UNHCR) and the UN Office for the Coordination of Humanitarian Affairs (OCHA) have sounded the alarm over severe funding shortfalls that are hindering life-saving humanitarian aid in countries including Nigeria, Burundi, and Colombia.
A number of people were killed and multiple others were injured in Vancouver after a vehicle drove into a crowd at a Filipino street festival in the western Canadian city, police said on Saturday.