In 1925, the Tri-State Tornado carved a path of destruction across Missouri, Illinois, and Indiana. With winds exceeding 300 mph, it remains the deadliest tornado in U.S. history, claiming more than 700 lives and leaving thousands homeless.

This record-breaking F5 tornado—classified as such by modern standards—traveled over 200 miles in just three and a half hours, leveling entire towns. Its unprecedented speed and longevity exposed the limitations of early warning systems, prompting significant advancements in tornado research and forecasting.

Image: Greg Johnson

The 1930s Dust Bowl was a man-made disaster exacerbated by a severe drought across the Great Plains. Decades of over-plowing and unsustainable farming practices had left the farmland highly vulnerable to erosion.

When the drought struck, winds swept loose soil into colossal clouds that darkened cities and devastated remaining crops. These massive dust storms, known as "Black Blizzards," choked the skies and forced thousands of families to abandon their homes. Eventually, the disaster led to significant agricultural reforms under the New Deal.

Image: Sophia Simoes

On the morning of June 26, 1954, a 10-foot-high seiche wave crashed onto the Chicago shoreline, sweeping away eight people and injuring many others. But what exactly is a "seiche wave"?

According to researchers, seiche waves are large, sudden standing waves that form in enclosed bodies of water due to extreme atmospheric changes, such as abrupt shifts in air pressure or strong winds. This rare event shocked the Midwest and prompted scientists to study lake oscillations and their connection to storm systems.

Image: Silas Baisch

In 1964, Alaska was struck by a devastating earthquake with a magnitude of 9.2, making it the most powerful ever recorded in North America and the second most powerful worldwide. Lasting four minutes and thirty-eight seconds, the earthquake triggered massive tsunamis and landslides across the state, along with significant geographic changes—some coastlines sank while others rose dramatically.

The destruction it caused led to major updates in seismic safety protocols and infrastructure standards throughout the U.S. This event emphasized the need for better preparedness and stricter building codes, to handle similar future events, especially in earthquake-prone areas.

Image: Joris Beugels

In 2005, Hurricane Katrina ravaged New Orleans and the Gulf Coast, claiming more than 1,300 lives and leaving millions homeless, sparking an urgent humanitarian crisis. The storm caused an estimated $125 billion in damages, making it one of the costliest hurricanes in history, tied with Hurricane Harvey in the Atlantic basin.

Katrina exposed critical flaws in the region's levee systems and emergency response efforts, prompting widespread criticism and driving essential reforms in disaster preparedness and infrastructure.

Image: NASA

On the same day as the Great Chicago Fire of 1871, a catastrophic firestorm near the small town of Peshtigo, Wisconsin, scorched approximately 1.2 million acres, making it the deadliest wildfire in recorded history. The uncontrolled blaze claimed over 1,500 lives, though the exact number of fatalities remains uncertain.

Since 1883, there has been speculation that the simultaneous outbreaks of major fires across Illinois, Michigan, and Wisconsin, including the Peshtigo and Chicago fires, were not coincidental but caused by burning fragments from Biela's Comet. However, this theory remains unproven.

Image: Tim Mossholder

Nicknamed "Superstorm" by the media, Hurricane Sandy wreaked havoc on the Caribbean and the coastal Mid-Atlantic region of the United States in late October 2012. While it affected 24 states, the most severe damage was concentrated in New Jersey and New York.

The storm caused an estimated $70 billion in damages, flooding New York City's subway system and displacing thousands of residents. It also ignited a nationwide debate about the role of man-made climate change in amplifying the intensity of seasonal storms.

Image: Matt Hardy

Death Valley recorded the world’s hottest temperature—134°F—in 1913. A testament to America’s climatic extremes, the region’s unique topography traps heat, effectively turning it into a natural furnace.

While the record remains a point of fascination for meteorologists and tourists alike, some recent researchers have challenged the accuracy of the 1913 measurement. Regardless, the region has come close to this temperature in recent years, indicating that a new record-breaking summer may be in the cards.

Image: Johannes Plenio

The "White Hurricane" of 1888 buried the Northeast under as much as 55 inches of snow, crippling major cities and resulting in over 400 fatalities. Railroads were shut down, and many residents were confined to their homes for up to a week.

As one of the most severe blizzards in American history, the storm compelled New York City to bury power lines and redesign its transportation systems to better withstand future extreme weather events.

Image: Jan Canty

On May 18, 1980, Mount St. Helens erupted in Washington, triggering massive landslides and pyroclastic flows, killing 57 people and causing over $1.1 billion in damages. The violent blast also reduced the mountain’s height by more than 1,300 feet and sent a plume of ash 80,000 feet into the atmosphere, disrupting air travel for weeks.

This volcanic event, the first in the contiguous United States since the much smaller 1915 eruption of Lassen Peak in California, is considered one of the most disastrous volcanic eruptions in U.S. history. Its aftermath raised awareness of volcanic hazards and underscored the importance of geological research in the country.

Image: Tetiana Grypachevska