Loud sound, mild tremors in Bengaluru

A file photo of the 24x7 help desk of the Karnataka State Natural Disaster Monitoring Centre (KSNDMC) in Bengaluru.   | Photo Credit: TH

Citizens in several parts of the city, especially those living off Mysuru Road, reported a loud sound and mild tremors that caused window panes to rattle on Friday around noon.

Amidst fears and speculation that it was an earthquake, the Karnataka State Natural Disaster Monitoring Centre (KSNDMC) issued a statement ruling out seismic activity. None of the cell’s seismographs recorded any signatures.

It is now suspected that the sound may have been caused by a ‘sonic boom’ — shock waves created when an object travels through the air faster than the speed of sound. However, neither the Indian Air Force (IAF) nor Hindustan Aeronautics Limited (HAL) have confirmed whether they were running any sorties on Friday.

KSNDMC said it received reports between 11.50 a.m. -12.15 p.m. from residents in Kengeri, Hemmigepura, Jnanabharathi, Rajarajeshwari Nagar and Kaggalipura.

Girish, a resident of Chandra Layout, said he heard a sound and the window panes rattled while he was in the kitchen. “But my wife who was on the terrace did not hear anything,” he said.

A resident from R.R. Nagar, Madhukara, described it as a “large explosion-like sound” that shook the window panes in his house. “It lasted for just less than a minute,” he said.

Sonic booms have been heard in the city several times in the past. In July 2021, residents in South and West Bengaluru had reported hearing an explosion-like sound around 12.30 p.m. At the time, too, the Bengaluru city police suspected that it was a sonic boom suspected to have been produced during a fighter plane sortie in the city, though the IAF denied conducting any such exercise at the time. The previous year, in May, when a sonic boom was heard, the IAF clarified that it had been caused by a test flight sortie.

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Printable version | Jan 20, 2022 2:46:00 PM |

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