Two thousand years ago, Alaska’s Mount Okmok volcano spewed ash high into the atmosphere for months. Scientists believe it ...

Gas emissions, earthquakes and ground deformations at Mount Spurr, an Alaskan volcano roughly 80 miles northwest of Anchorage, indicate that it is “progressing toward an eruption,” scientists said ...

Pressure waves from the colossal 2022 Tonga eruption rippled through Alaska’s crust, offering scientists a rare look into the state’s deep subsurface. Atmospheric waves from a powerful volcanic erupti ...

One of two main craters on Alaska’s Mount Spurr, shown in 1991. Earthquake activity suggested the volcano was close to erupting again in 2025. (Photo by R.G. McGimsey/Alaska Volcano Observatory/U.S.

A circular scar on Alaska’s face speaks to an event that may have contributed to the fall of societies on the far side of the ...

An Alaska volcano erupted Monday, putting out an ash cloud that reached 37,000 feet. Pavlof Volcano erupted for 17 hours in its initial phase and the original ash cloud spread into interior Alaska, ...

FILE - This image provided by Alaska Volcano Observatory shows the summit of Mount Spurr, on Oct. 24, 2024, in Alaska. (Wyatt Mayo/Alaska Volcano Observatory, U.S. Geological Survey via AP, File) ...

ANCHORAGE, Alaska (Reuters) - An Alaska volcano shot an ash cloud about 5 miles (8 km) into the sky on Tuesday, prompting flight delays and cancellations and raining volcanic particles onto at least ...

Alaska’s volcano experts no longer expect an eruption anytime soon from Mount Spurr, the closest active volcano to Anchorage. On Wednesday, the Alaska Volcano Observatory formally lowered the alert ...

FILE - This image provided by Alaska Volcano Observatory shows the summit of Mount Spurr, on Oct. 24, 2024, in Alaska. (Wyatt Mayo/Alaska Volcano Observatory, U.S. Geological Survey via AP, File) ...