Alaska suffered serious infrastructure damage Friday after the Anchorage area was hit with a 7.0 earthquake and followed minutes later by a 5.8 aftershock. Many homes in Anchorage, a city with a population of 300,000, are without power and some locals have described the scene as "anarchy."

There have been no reports of deaths or serious injuries. Officials warned of "gas-line breaks that could lead to potential further disasters."

The estimated cost of the earthquake is likely between $100 million and $1 billion, according to the Washington Post.

Anchorage Police Chief Justin Doll told the Associated Press that parts of a scenic highway that heads from Anchorage toward mountains and glaciers have sunken and "completely disappeared" and that the Glenn Highway damage was so significant that it will probably "take a long time to repair."

"Scary day for Alaskans," said Gov. Bill Walker on Friday. "We have been through earthquakes in the past. This one was different. This was very, very scary damage that we don't fully understand.

"I have not received any reports of loss of life. I issued a declaration of disaster ... we've had calls from the White House this morning ... they have offered all the help we need. They will be there. Right now, we are going to go and fly and look at the various damages around this part of Alaska — up in the valley, down toward Birdwood. We've heard some incredible reports ... so we'll be back from this in a bit and as we have more news we will report that."

Walker said he was pleased that the tsunami alert was canceled.

There has been plenty of video coverage of the earthquake and its damage.

Alaska averages 40,000 earthquakes per year and in 1964 was hit with a 9.2 earthquake, which is the strongest in U.S. history.