Nearly a mile deep and about 700 miles northwest of San Francisco, the volcano known as Axial Seamount is drawing increasing scrutiny from scientists who only discovered its existence in the 1980s.

The earthquake was centered along Pāhala at a depth of 32.4 kilometers (about 20 miles). The USGS said it received 73 reports ...

The Great Alaska Earthquake was the most powerful earthquake ever recorded in the United States. Its violent tremors reshaped ...

Mega tsunamis are colossal waves triggered by geological events. Lituya Bay saw the tallest tsunami ever recorded. Hawaii ...

Regions most at risk include Alaska, Hawaii, and the West Coast, all of which are characterized by significant geological activity.

Unlike smaller tsunamis, which may only produce waves a few feet high, mega tsunamis are on a completely different scale.

HONOLULU (HawaiiNewsNow) - On Monday, May 20, at 9:37 a.m., a magnitude-4.2 earthquake occurred 11 miles southeast of Pahala on Hawaii Island at a depth of 20 miles below sea level. The earthquake had ...

A tsunami like this would wipe out big swaths of coastal cities like Seattle and Portland, and threaten lives of millions of ...