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The Bengaluru Boom

Voices & soundsBengaluru, Karnataka, India · 20 May 2020Explained

Just after lunchtime, a single boom rattled windows from one end of Bengaluru to the other.

What was reported

At around 1:20 pm on 20 May 2020, people across Bengaluru, from the airport in the north to Electronic City in the south, heard a loud boom. Windows and doors shook, and many people thought it was an earthquake or an explosion.

The state's earthquake monitoring centre said its instruments had recorded no tremor. For a few hours, social media filled with guesses, from a meteor to a UFO.

Explanations offered

The Ministry of Defence said the sound came from a military test aircraft going supersonic, flying between 36,000 and 40,000 feet, well outside the city. A sonic boom from that height can be heard 65 to 80 km away.

When
20 May 2020
Where
Bengaluru, Karnataka, India
Witnesses
Much of the city
Status
Explained

Famous cases are real, widely reported events. Each file sets out what witnesses said and the explanations that have been offered, without taking a side.