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Monday, August 02, 2021

Another sonic boom? Loud sound heard in Bengaluru today

The sonic boom that the city had witnessed last year was caused by a routine IAF Test Flight involving a supersonic profile that took off from Bengaluru Airport.

By: Express Web Desk | Bengaluru |
Updated: July 2, 2021 4:16:37 pm
Several residents took to Twitter to share their experiences regarding the loud sound. (Representative)

A loud sound was heard by the residents of Bengaluru around 12.30 pm on Friday, reminding them of the sonic boom they had heard a year back.

Speaking to, CS Patil, the director of India Meteorological Department’s (IMD) Bengaluru unit, said, “Do not panic. We are checking with the mines department regarding any blasts.”

According to the Karnataka State Natural Disaster Monitoring Centre (KSNDMC), there was no signal of any local tremor or earthquake.

In a statement, KSNDMC said, “A report of loud sound by the local community was received from Kengeri, Rajarajeswari Nagar and Vijayanagar, Bengaluru today, during the time duration 12:00 to 12:45 pm. The data was closely analysed from our Seismic Observatory for any possible seismic signals of an earth quake. The earthquake data/record analysed for the above durations shows no signal of local tremor/earthquake.”

Several residents took to Twitter to share their experiences regarding the loud sound. “Powerful, thunderous #boom heard in several parts of #Bengaluru at about 12.20 pm IST today leaving doors & windows rattled & cars sirens go off!” a Twitter user wrote.

Comparing it to last year’s sonic boom, another user said, “Heard a very loud blast like noise here in South Bengaluru at almost exactly 12:23 pm on July 02, 2021. Reminds one of the sonic boom that was heard in Bengaluru last year, this seemed a little louder and the house shook for a second or two.”

Meanwhile, reacting to the loud noise reportedly heard in Bengaluru, the Indian Air force (IAF), in a statement, denied any flying activity or any known action from their side to have caused such loud sound.

“None of the IAF bases or units including ASTE were flying at that time,” PRO, Defence, Bengaluru said.

Gopal Sutar, Spokesperson, Hindustan Aeronautics Limited(HAL) said, “Regular sorties of fighters and trainers take place from HAL airport. Today was no different. HAL can’t comment on the loud noise reportedly heard today in Bengaluru.”

Bengaluru, last year in May, had witnessed a similar incident, which the Defence PRO had later said was a routine IAF Test Flight involving a supersonic profile that took off from Bengaluru Airport and flew in the allotted airspace well outside city limits.

“The sonic boom was probably heard while the aircraft was decelerating from supersonic to subsonic speed between 36,000 and 40000 feet altitude,” the defence ministry had said. It confirmed that the aircraft belonged to the Aircraft Systems and Testing Establishment and had flown in the allocated airspace outside city limits.

Explaining the unusual sound heard in the city, the Training Command headquarters of the Indian Air Force, said in a separate statement, “These (test flights) are done well beyond the city limits in specified sectors. However, considering the atmospheric conditions and reduced noise levels in the city during these times, the aircraft sound may become clearly audible even if it happened way out from the city.”

So far, the Ministry of Defence’s PRO in Bengaluru has not given any reaction to the “loud sound” heard on Friday.

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