2020 Beirut explosion

On August 4, 2020, a massive explosion occurred at the Port of Beirut in Lebanon.

This event was one of the largest non-nuclear explosions ever recorded. It was caused by the detonation of 2,750 tonnes of ammonium nitrate. Ammonium nitrate is a chemical often used in fertilizers or explosives. This specific batch had been stored in Warehouse 12 for six years. The blast caused immense destruction to the city and the surrounding region. It remains a major event in modern history due to its scale and cause.

The disaster began with a fire in Warehouse 12 near the port's grain elevator.

At approximately 17:45 local time, the fire broke out. A rescue team known as Platoon 5 arrived to fight the flames. This team included nine firefighters and one paramedic. They reported that the fire was immense and made a "crazy sound." At 18:07, a small initial explosion occurred. This first blast likely came from fireworks stored in the same warehouse. It released energy equivalent to about 1.5 to 2.5 tons of TNT.

About 33 to 35 seconds after the first blast, a massive second explosion occurred.

This second detonation was far more powerful and created a huge red-orange cloud. The color came from nitrogen dioxide, a byproduct of the ammonium nitrate decomposing. The explosion released energy comparable to 1.1 kilotons of TNT. This is roughly equal to 1 gigawatt-hour of energy. The shockwave was so strong that it briefly disrupted the Earth's ionosphere. It also created a seismic event measured at 3.3 magnitude by the United States Geological Survey.

The chemical that exploded had a long and complicated history at the port.

It originally arrived in Beirut in November 2013 on a ship called the MV Rhosus. The ship was traveling from Georgia to Mozambique but faced mechanical issues. It was eventually seized in February 2014 due to $100,000 in unpaid bills. A judge ordered the ammonium nitrate to be moved to Warehouse 12. It sat there without adequate safety measures for six years. Customs officials had sent several letters between 2014 and 2017 requesting a resolution. However, these requests were often declined due to procedural errors.

The explosion had a devastating impact on the people and the economy of Lebanon.

At least 218 people died and 7,000 people were injured. Approximately 300,000 individuals were displaced from their homes. The property damage was estimated at roughly $15 billion. The blast was felt far away in Syria, Israel, and Cyprus. It also caused major damage to the port's grain silos. These silos, which held a strategic reserve of cereals, suffered structural damage. Some parts of the silos eventually collapsed in 2022 following other fires.

This catastrophe happened while Lebanon was already in a deep crisis.

The economy was struggling with high poverty rates and a plunging currency. Many hospitals were already overwhelmed by the COVID-19 pandemic. Before the blast, the main COVID-19 facility was nearly at full capacity. The government declared a two-week state of emergency immediately after the event. This led to massive protests that had already been growing since 2019. These protests eventually led to the resignation of Prime Minister Hassan Diab and his cabinet.

Scientists and investigators have studied the explosion to understand its mechanics.

They used social media videos to track the speed of the shockwaves. One study used structural engineering models to look at the damaged grain elevator. This research helped estimate how much ammonium nitrate actually detonated. There are also ongoing discussions regarding the causes and connections to other groups. Some reports have looked into the presence of weapons or political connections. Regardless of the cause, the event changed the landscape of Beirut forever.