The U.S. Geological Survey says the magnitude 7.5 quake struck at midnight Friday Alaska time and was centered about 60 miles west of Craig, Alaska.
The tsunami center says a tsunami with a “significant widespread inundation of land is expected.”
The first wave was expected around 1:15 a.m. (2:15 a./m. PST) in Craig, and 2:50 in Cordova, further to the north.
The center says widespread dangerous coastal flooding is possible.
Reports from Sitka so far don’t indicate any sizable waves.
That rumbling that started at approximately midnight was an earthquake roughly 50 miles south of Port Alexander and 70 miles west of Craig. The preliminary information from the Alaska Earthquake Information Center pegs the quake as a 7.2 in magnitude.
There is a tsunami warning in effect for the coastal areas from the northern tip of Vancouver Island to Cape Suckling, Alaska, approximately 75 miles southeast of Cordova.
An advisory is in effect for areas along the coast between Cape Suckling to Kennedy Entrance approximately 40 miles southwest of Homer.
So far there are no reports of damages in Juneau.
This is a developing story. Check back here for details.