As a much-weakened Irene entered Canada, parts of the U.S. East Coast are still grappling Monday with dangerous floodwaters, widespread power outages and stranded residents.
At least 24 deaths in nine states were blamed on Irene, which fizzled to a post-tropical cyclone and headed over eastern Canada on Monday.
Flooding was ongoing, particularly in New England and southern states were affected primarily by power outages and the effects of storm surge.
Downed power lines left more than 4 million customers without electricity during Irene's weekend journey up the East Coast and more than 8,500 people spread up and down the East Coast awoke Monday in Red Cross shelters, according to a spokesman.
But life along much of the East Coast returned to normal Monday, as subway services resumed on all 22 lines in New York City, and the three major airports in the area reopened after thousands of flights were canceled over the weekend. Flight schedules were expected to normalize slowly and passengers were urged to check with their airlines before going to the airport.
The U.S. government estimated that the cost from wind damage alone will exceed $1 billion.
"The impacts of this storm will be felt for some time, and the recovery effort will last for weeks or longer," Obama said Sunday evening from Washington.
CNN’s Amber Lyon reported from Virginia Beach, Virginia where Irene’s wind and rain knocked out power for many.