hereAlong the Aleutian Islands it extends from Unimak Pas to Samalga Pass.A tsunami advisory was posted for some areas nearby.The centre said there is no tsunami threat for other US and Canadian coastlines.The alert read: "If you are in a tsunami warning area, evacuate inland or to higher ground above and beyond designated tsunami hazard zones or move to an upper floor of a multi-story building depending on your situation."The tsunami warning remains in effect for the coastal areas of Alaska