Alaska experienced a surge of seismic activity over the weekend as a powerful magnitude 7.0 earthquake triggered a sequence of 164 recorded tremors in less than 24 hours, according to data from the United States Geological Survey (USGS).

The initial earthquake, which struck near Yakutat on Saturday sent tremors across southeastern Alaska and parts of Canada, with aftershocks continuing throughout the day.

No casualties or major damage have been reported and no tsunami warnings have been issued.

Alaska is as one of the most seismically active regions in the country as it sits along the Pacific “Ring of Fire,” a zone known for frequent and sometimes damaging earthquakes due to the ongoing collision between the Pacific Plate and the North American Plate.

Saturday’s earthquake struck at a shallow depth of approximately 6 miles, which increased the intensity of shaking experienced at the surface. Michigan Technological University categorizes earthquakes between 7.0 and 7.9 as “major,” with the potential for serious damage if located near populated or developed areas.

Residents as far away as Anchorage and communities across the border in Canada’s Yukon Territory reported feeling the quake.

In the 24 hours following the main quake, seismic networks logged 164 earthquakes in the region. Many were aftershocks, including several registering magnitudes above 5.0. This number of aftershocks is not uncommon after a significant seismic event as the crust readjusts along the fault lines.

NASA’s Earth Observatory has noted that Alaska consistently records more significant earthquakes than any other state. Major historical quakes, such as the 8.7 magnitude Rat Islands earthquake in 1965, further underscore this pattern.

Alaska state seismologist Michael West told KTUU-TV on Saturday: “Here we are 40 minutes after the earthquake, it appears to be generating a pretty vigorous aftershock sequence….Magnitude 7 is certainly enough to cause ground failures…though I have no observations yet, I wouldn’t be surprised if we heard about roadways or something that were impacted or landslides in the area or anything like that. But, again, we do not know that at this time, but magnitude 7 is the kind of earthquake where we would begin to expect those kinds of impacts.”

Calista MacLeod, Royal Canadian Mounted Police Sergeant in Whitehorse, told Associated Press Saturday: “It definitely was felt. There are a lot of people on social media, people felt it. There are no reports of damage or injury.”

Seismologists and local authorities will continue to closely monitor seismic activity in southeastern Alaska in the aftermath of the quake and aftershocks.