Climate scientist warns Yellowstone eruption could disrupt global food supplies

Monday 10 August 2026 - 12:25

By: Azzat Manal

Climate scientist warns Yellowstone eruption could disrupt global food supplies

A major eruption of the Yellowstone volcanic system could have serious consequences for agriculture and food security worldwide, climate scientist Kristina Dahl has warned. Such an event could damage crops and disrupt food production across several regions, potentially increasing the risk of food shortages.

Speaking to Russian news agency RIA Novosti, Dahl, vice president at the Climate Central research organization, pointed to historical volcanic eruptions as examples of how large-scale volcanic activity can affect agriculture and food supplies.

One of the most notable examples is the 1815 eruption of Mount Tambora in Indonesia. The eruption released enormous quantities of volcanic material into the atmosphere and contributed to significant climatic disruptions, including cooler conditions that affected harvests in several parts of the world.

Dahl noted that today's food system is far more interconnected than it was in the past. Agricultural production, international trade and food distribution networks link countries across continents, meaning that a major disruption in one region can have consequences well beyond its immediate surroundings.

A large volcanic eruption could inject ash and gases high into the atmosphere, reducing sunlight and temporarily altering temperatures and weather patterns. Depending on the scale and duration of the event, such changes could affect growing seasons and crop yields.

Climate-related shocks can already have significant effects on agriculture. Dahl cited the severe heat and drought experienced by Russia in 2010, which caused substantial crop losses and contributed to disruptions in global agricultural markets.

Yellowstone is considered one of the world's major volcanic systems and has experienced several exceptionally large eruptions over its geological history. Scientists estimate that three major explosive eruptions occurred there over the past 2.1 million years.

However, concerns about a potential imminent eruption should be placed in context. According to the United States Geological Survey, there is currently no evidence indicating that a major Yellowstone eruption is about to occur. The probability of such an event remains extremely low.

Recent seismic activity in the Yellowstone region has nevertheless attracted attention. A magnitude 3.3 earthquake was recorded near the volcanic area on July 3, reportedly the strongest earthquake in the region since the beginning of the year. Scientists routinely monitor earthquakes and other indicators around Yellowstone as part of ongoing efforts to understand the volcanic system.

Experts emphasize that earthquakes alone do not mean that an eruption is approaching. Yellowstone experiences frequent seismic activity, much of which is part of the normal geological processes occurring beneath the region.

The broader concern raised by the climate scientist highlights the vulnerability of the modern food system to major environmental shocks. Even without a volcanic disaster, extreme heat, drought, floods and other climate-related events can reduce agricultural production and place pressure on food prices and supplies.

A large Yellowstone eruption remains a highly unlikely scenario, but its potential consequences illustrate why international food systems need resilience and diversified sources of agricultural production. For now, however, scientific monitoring provides no indication of an imminent catastrophic eruption at Yellowstone.