Yellowstone National Park is home to a massive supervolcano that has erupted three times in the past 2.1 million years. While the odds of another eruption are very low, if it were to happen, it could have significant impacts on the surrounding area and beyond. Here are some potential consequences of a Yellowstone eruption:

• Ashfall: If a large explosive eruption were to occur, it could spew ash for thousands of miles across the United States. The amount of ashfall would depend on the size of the eruption, but it could have significant impacts on air travel, agriculture, and infrastructure.

• Volcanic gases: A Yellowstone eruption could release large amounts of sulfur dioxide and other gases into the atmosphere, which could lead to acid rain and other environmental impacts.

• Lava flows: While a large explosive eruption is the most concerning scenario, it is also possible that a smaller eruption could occur that produces lava flows. This would likely be precipitated by a swarm of earthquakes in a specific region of the park as the magma made its way to the surface.

• Hydrothermal explosions: Another possible scenario is a hydrothermal explosion, which is a rock-hurling geyser eruption. While less destructive than a large explosive eruption, it could still be dangerous to anyone in the immediate vicinity.

• Global impacts: If a catastrophic, caldera-forming eruption were to occur, it could alter global weather patterns and have enormous impacts on human civilization. Some experts have even suggested that it could lead to a "nuclear winter" that blankets the United States and other parts of the world.

Its worth noting that the odds of a Yellowstone eruption are very low, and even if an eruption were to occur, it's impossible to predict exactly what would happen. However, scientists continue to monitor the supervolcano and study its behavior in order to better understand the risks and potential impacts of an eruption.