Alaska Airlines said it has requested a ground stop for its fleet as well as for that of regional subsidiary Horizon Air amid a computer system outage Sunday night. The request to federal authorities would keep Alaska and Horizon flights out of the air until the system is returned to normal operations, Alaska said in a statement.

The USGS described the earthquake as "notable," confirming that it may have been felt by residents in Sand Point and nearby areas. No tsunami warning was issued. Local emergency officials are monitoring the situation but have not reported any injuries or damage so far.

Ground shaking was strongest in Sand Point, with reports of "objects flying out of the pantry and off of shelves," noted the Alaska Earthquake Center.

The quake that struck Alaska’s southern coast on Wednesday, July 16 is part of a larger sequence that may continue to unfold in destructive ways.