Powerful earthquake strikes near Anchorage, Alaska

ANCHORAGE, Alaska -- A powerful earthquake rocked buildings and shattered roads Friday morning in Anchorage, sending people running into the streets. The U.S. Geological Survey said the first and more powerful quake was centered about 7 miles north of Anchorage, Alaska's largest city, with a population of about 300,000.

People ran from their offices or took cover under desks. A large section of road near the Anchorage airport collapsed, marooning a car on a narrow island of pavement surrounded by deep chasms in the concrete.

Several cars crashed at a major intersection in Wasilla, north of Anchorage, during the shaking. Anchorage Police Chief Justin Doll said he had been told that parts of the Glenn Highway, a scenic route that runs northeast out of the city past farms, mountains and glaciers, had "completely disappeared."

Alaska earthquake map

Read updates about Alaska's earthquake as they happened:

Alaska earthquakes fast facts

This is the latest information on the earthquakes that hit Alaska.

• 7.0 earthquake struck at 8:29 local time
• 5.7 aftershock struck 6 minutes later at 8:35
• Tsunami warning was issued and then lifted a short time later.
• Anchorage police chief said he was unaware of reports of deaths or serious injuries.
• So far there have been at least 45 'aftershocks,' all of them magnitude 2.5 or larger
• Around 48,000 power outages have been reported.
• Numerous aftershocks have hit the area.
• One quake was felt 350 miles away in Fairbanks.

White House issues disaster declaration, Walker says

Gov. Bill Walker said in a press conference Friday that there is structural damage to the city that will take a while to assess, but he praised the city's response, calling it a "10." There are still about 40,000 without electricity, Walker said.

Walker said that while he was in a helicopter surveying the damage, he received three calls from President Trump and another after he landed. Walker said there was a "tremendous outpouring from the White House." The White House has issued a declaration of disaster, Walker said.

The Trans-Alaska pipeline has been closed as a precautionary measure, Walker said, and it's unclear when it will open again.

Damage assessments underway

Kirk Kullberg said his house was a mess after the earthquake, CBS News' Jamie Yuccas reports. "The dresser came down in the kid's room," Kullberg said. "Definitely thankful that everyone is OK."

The shaking could be felt 350 miles away. Officials briefly issued a tsunami warning for coastal areas of southern Alaska. The governor has asked for a disaster declaration.

While damage assessments are underway, seismologist Lucy Jones said Alaskans can expected to be impacted for awhile.

"Having another magnitude 5 won't surprise any seismologist but we usually get the public going 'wait a minute, this was supposed to be over,'" Jones said. "So expect that there could be a magnitude 5 a year or two from now."

Jones said that future quake would be associated with Friday's earthquake.

At least 45 aftershocks reported so far

The USGS said anything after the 7.0 earthquake can be considered an aftershock. So far there have been at least 45 "aftershocks," all of them magnitude 2.5 or larger.

According to the USGS, even though these are earthquakes in their own right, they're associated with the fault line "'re-aligning" and "re-settling" itself back after original movement.

There could be as many as 2,200 afterhsocks that measure 3.0 or higher, the USGS said. The re is a 78 percent chance of a magnitude 5 or higher aftershocks, with as many as 23 possible. There is a 27 percent change of a magnitude 6 or higher aftershock, with as many as three possible. There is a 4 percent chance of a 7.0 magnitude aftershock, such an earthquake is possible but with a low probability.

Flights resuming to Ted Stevens Airport

Flights are starting to arrive and depart from Ted Stevens Anchorage International Airport, the FAA said at about 1 p.m. Friday. TSA, airline operations and support service are in place and runway operations are available, the FAA told CBS News transportation correspondent Kris Van Cleave.

But there are still numerous road closures and power outages throughout the city.

Sarah Palin posts video of damage at parents' home

Former Alaska Gov. Sarah Palin posted a video of her parents' kitchen in Wasilla after the quake. "The video doesn't begin to show the scope," the 2008 Republican nominee for vice president said in her Facebook post.

In the video, broken dishes were strewn across the floor.

Other Alaskans documented the damage caused by the quakes. From students in schools to drivers on the highway, many took to social media to share the aftermath.

Aftershock hits CBS affiliate during livestream

While an anchor for CBS Anchorage affiliate KTVA-TV was describing damage from the earthquakes live on Facebook, another aftershock occurred. The crew had to take shelter under desks.

Trans-Alaska pipeline shut down

The operators of the 800-mile-long trans-Alaska pipeline said they shut the system down as a precaution following the earthquake. Michelle Egan, a spokeswoman with the Alyeska Pipeline Service Company, said there was no known damage to the pipeline.

She said data will be assessed at an operations center and a physical inspection of the line will be performed. She said the pipeline can be restarted before the physical assessment is complete.

Dramatic video, pictures show aftermath

Dramatic video and pictures of the aftermath surfaced on social media soon after the quake struck.

Trump urges Alaskans to follow authorities' directions

President Trump urged Alaskans on Twitter to follow first responders' directions. Mr. Trump was in Argentina at the Group of 20 summit.

White House press secretary Sarah Huckabee Sanders tweeted that Mr. Trump was monitoring the reports of damage. Sanders added: "We are praying for the safety of all Alaskans!"

Man tossed from bathtub during quake

Brandon Slaton was alone and home and soaking in the bathtub when the earthquake struck. Slaton just moved to Kenai, Alaska, with his wife from Arizona and had never felt an earthquake before the 7.0-magnitude temblor hit.

Slaton said the quake created a powerful bath-and-forth sloshing in the bathtub and before he knew it, he'd been thrown out of the tub by the force of the waves. His 120-pound mastiff panicked and tried to run down the stairs, but the house was swaying back and forth so much that she was thrown off her feet and into a wall and tumbled to the base of the stairs.

Slaton said: "It was anarchy. There's no pictures left on the walls, there's no power, there's no fish tank left. Everything that's not tied down is broke."

Slaton ran into his son's room after the shaking stopped and found his fish tank shattered and the fish on the closet floor, gasping for breath. He grabbed the Betta fish and put it in another bowl.

He said the area was eerily quiet. His children, 11 and 16, were evacuated from school.