A magnitude 4.6 earthquake has hit Alaska just miles from Mount Spurr, which has been showing signs of unrest and is at risk of an imminent volcanic eruption

An eruption of the Krasheninnikov volcano in Russia expelled a huge ash plume and may be linked to the earthquake that triggered tsunami warnings on 29 July

The US Geological Survey reported a magnitude 4.6 quake near Petersville, approximately 86 miles from Mount Spurr, which has been showing signs of unrest in recent months