1865day.year

In Mobile, Alabama, around 300 people are killed when an ordnance depot explodes.

A massive explosion at an ordnance depot in Mobile, Alabama, killed approximately 300 people in 1865.
On May 25, 1865, a deadly accident occurred when stored ammunition detonated at a Confederate ordnance depot in Mobile, Alabama. The blast destroyed nearby buildings, ignited secondary explosions, and sent shockwaves across the city. Reports estimate that around 300 workers, soldiers, and civilians lost their lives in the chaos. Rescue efforts were hampered by fires and continued blasts, complicating recovery operations. The tragedy highlighted the dangers of munitions storage and the lingering hazards of the Civil War. It remains one of the deadliest industrial accidents in the region’s history.
1865 Mobile, Alabama ordnance depot explodes
1955day.year

In the United States, a night-time F5 tornado strikes the small city of Udall, Kansas as part of a larger outbreak across the Great Plains, killing 80 and injuring 273. It is the deadliest tornado to ever occur in the state and the 23rd deadliest in the U.S.

An F5 tornado strikes Udall, Kansas, killing 80 and injuring 273 in the state's deadliest twister on record.
In the early hours, a powerful F5 tornado tore through the small city of Udall, Kansas, as part of a massive Great Plains outbreak. Winds exceeding 260 miles per hour leveled homes and uprooted trees, leaving widespread devastation. Emergency responders rushed aid while survivors searched through rubble for loved ones. The storm claimed 80 lives and injured 273 residents, making it the most lethal tornado in Kansas history. Recovery efforts involved community volunteers, National Guard units, and federal assistance. The disaster prompted improvements in warning systems and building codes across the region. Researchers later studied the outbreak to better understand supercell dynamics and improve forecasting. Decades on, the Udall tornado remains a somber reminder of the power of nature.
1955 F5 tornado Udall, Kansas a larger outbreak across the Great Plains
1979day.year

American Airlines Flight 191: A McDonnell Douglas DC-10 crashes during takeoff at O'Hare International Airport, Chicago, killing all 271 on board and two people on the ground.

American Airlines Flight 191 crashed during takeoff from O'Hare Airport in Chicago, killing all 271 onboard and two on the ground.
On May 25, 1979, American Airlines Flight 191, a McDonnell Douglas DC-10, crashed just after takeoff from Chicago O'Hare International Airport, killing all 271 aboard and two people on the ground. Investigations revealed that an engine pylon separated from the wing, severing hydraulic lines and leading to loss of control. The disaster prompted the grounding of DC-10 fleets worldwide and led to major changes in aircraft maintenance procedures and FAA safety regulations. New inspections, revised design reviews, and stricter oversight were implemented to prevent similar tragedies. Flight 191 remains the deadliest aviation disaster in U.S. history and a landmark case for improving commercial aviation safety.
American Airlines Flight 191 McDonnell Douglas DC-10 O'Hare International Airport
1985day.year

Bangladesh is hit by a tropical cyclone and storm surge, which kills approximately 10,000 people.

A powerful tropical cyclone struck Bangladesh, causing a deadly storm surge that killed around 10,000 people.
On May 25, 1985, a severe tropical cyclone made landfall on the coast of Bangladesh, driven by fierce winds and a massive storm surge. The cyclone inundated low-lying coastal regions, destroying homes, crops, and infrastructure. Rescue efforts were hampered by flooded roads and damaged communication networks, leaving thousands stranded. The scale of the tragedy prompted a reevaluation of early warning systems and the construction of cyclone shelters in vulnerable areas. International aid agencies mobilized to provide emergency relief, including food, water, and medical assistance. This disaster emphasized the urgent need for improved disaster preparedness and coastal defenses in one of the world's most cyclone-prone regions.
1985 Bangladesh tropical cyclone storm surge
2002day.year

China Airlines Flight 611 disintegrates in mid-air and crashes into the Taiwan Strait, with the loss of all 225 people on board.

On May 25, 2002, China Airlines Flight 611 disintegrated over the Taiwan Strait, killing all 225 people aboard.
China Airlines Flight 611 departed Taipei bound for Hong Kong. Approximately twenty minutes after takeoff, the Boeing 747-200 suffered a catastrophic structural failure over the Taiwan Strait. The aircraft broke apart in mid-air, scattering debris across the sea. An extensive search recovered wreckage and bodies over several weeks, but investigators faced challenges determining the cause. Months later, the final report identified improper repairs following a tailstrike incident years earlier as the contributing factor. This tragedy led to strengthened aircraft maintenance oversight and new safety protocols.
2002 China Airlines Flight 611 Taiwan Strait