What to Expect if Yellowstone's Supervolcano Erupts Today

WHO:

Phys.org - The Yellowstone supervolcano is a massive volcanic system located in what is now Yellowstone National Park.

WHAT:

Phys.org - Around 631,000 years ago, a super-eruption occurred at Yellowstone, resulting in immense volcanic eruptions.

Phys.org - The super-eruption shattered life within hundreds of kilometers of the blasts and dispersed ash across much of North America.

WHERE:

Phys.org - The events described took place in northwestern Wyoming, U.S., specifically in Yellowstone National Park.

WHEN:

Phys.org - The last super-eruption at Yellowstone occurred approximately 631,000 years ago.

WHY:

Phys.org - The article suggests that the catastrophic events were due to a series of immense volcanic eruptions.

HOW:

Phys.org - The effects of the super-eruption were felt worldwide, indicating a significant global impact from the volcanic activity.

(UPDATED September 21, 2026 15:59 UTC)

The Yellowstone supervolcano, located in Yellowstone National Park in northwestern Wyoming, is known for its massive volcanic system. Approximately 631,000 years ago, a super-eruption occurred, resulting in catastrophic volcanic activity that shattered life within hundreds of kilometers and dispersed ash across much of North America. The effects of this super-eruption were so significant that they were felt worldwide, highlighting the global impact of such immense volcanic events.