"So thankful to be safe".
An automatically generated tsunami warning for coastal areas of southern Alaska was cancelled, after residents on Kodiak Island were earlier told to flee to higher ground.
According to reports, the quake completely destroyed local news station KTUU.
A tsunami warning has been issued for the Alaska Panhandle. "Further information will be provided in supplementary messages".
Falsey also said city workers were responding to reports of 28 mainline water breaks and dozens of requests to cut off residential service because of flooding.
Aftershocks from Friday's powerful Alaskan natural disaster continued to pound the area around Anchorage on Saturday, as workers strove to patch up buckled roads and residents began cleaning up damage around their homes and businesses.
In a statement, they said: "There is major infrastructure damage across Anchorage".
7.0 magnitude earthquake rocks Alaska in US
Michael Burgy, a senior technician with the National Tsunami Warning Center in Palmer, Alaska, said the tsunami warning was automatically generated based on the quake's size and proximity to shore.
The Anchorage Police Department said they were operational after Friday's "massive earthquake".
A lawyer working and living in Anchorage, Hank Graper, said he was driving when the quake struck.
Pictures posted to social media sites showed damage that included collapsed ceiling tiles at an Anchorage high school and buckled roadway pavement in places.
Walker says it will take more than a week or two to fix roads damaged by the quake. Slaton, who weighs 209 pounds, said it created a powerful back-and-forth sloshing that threw him out of the tub.
Southern Alaska has a high risk of earthquakes due to tectonic plates sliding past each other under the region.
This photo provided by David Harper shows merchandise that fell off the shelves during the quake. The 5.7 aftershock arrived within minutes, followed by a series of smaller quakes. "You have been hit hard by a 'big one, ' " Trump wrote. This quake wasn't almost as strong so any tsunami is unlikely to reach that level, but this is still a risky situation and should be monitored closely if you live anywhere across the Pacific.