News

Lower River shaken by sonic boom

Brendan and Melissa James, of Harwood Street, Maclean. Brendan said Thursday night’s tremor was felt by most in their street.
Brendan and Melissa James, of Harwood Street, Maclean. Brendan said Thursday night’s tremor was felt by most in their street.

MANY Lower River residents felt the ground move under their feet on Thursday night in what was believed to be a sonic boom.

Brendan James, of Maclean, described the unusual occurrence as a ‘rumble’ that sounded as if a B-double truck was driving over their roof.

“We felt a rumble on the ground and then the windows started shaking,” he said.

“My wife and I looked at each other at the time because we thought it was someone banging on the window at first.”

Mr James said the shudder and slight rumble only lasted for five seconds.

A Royal Australian Air Force spokesman said the possible source of the tremble around 10pm was supersonic activity as part of the ECADEX major aircraft defence exercise that was a vital training exercise for air force personnel to maintain operational capacity and to practice key defence skills.

“The aircraft were operating in accordance with flight rules and restrictions for supersonic flight but at times atmospheric conditions can propagate the sound waves further than expected,” she said. “There have been recorded events of sound waves being heard from over 100 kilometres away.”

Dr Con Doolan, from the school of Mechanical Engineering at the University of Adelaide, said a sonic boom was a sound that could be heard on the ground from an aircraft travelling faster than the speed of sound.

“The shock waves cause a very distinct boom sound,” he said.

Sonic boom
  •  A sound that can be heard on the ground from an aircraft travelling faster than the speed of sound.
  •  Shock waves are created and when sound reaches the ground an intense sound wave can be heard.


VALLEY ROUND-UP: Community news from around the Clarence Valley

WELCOME ABOARD: Yamba Day VIEW Welcomes new members Wendy Smith, President Lyn, Marjorie Mullins and (front) Marlene Wells.

See what's making news in our community groups

Gavin finding the way to success

FINDS A WAY: Gavin Rayward practises in darkness before the Northern NSW RAID event.

Ready to take on eight-hour race

Mayor clarifies council not listening on SRV comment

Mayor Jim Simmons

Clarence Mayor Jim Simmons is sorry for misleading SRV comment

Local Partners

Talk show host’s phone call takes heartbreaking turn

ANYTHING can happen on live TV — one chat show segment took such an incredible turn it’s still referenced as a landmark television moment to this day.

Why streaming movies will cost more from July 1

Australians can expect to pay more for streaming services such as Netflix when the new taxes kick in.

The new taxes from July 1 won’t hurt the MPs’ big pay rise

What's on the small screen this week

Ryan Shelton in a scene from True Story with Hamish & Andy.

HAMISH and Andy hear another funny story and Cleverman returns.

Bonus Bill Busters Bingo card with today's paper!

Get an extra bingo car with today's paper.

Don't miss out on your bonus card.

Digging down to find Clare

Australian actress and singer Clare Bowen, who got her big break on the US TV series Nashville, is touring Australia with her solo album.

After five years on Nashville it’s time to tell her own stories.

TV REVIEW: Offspring season 7 is... fine

Alexander England and Asher Keddie in a scene from season seven of Offspring.

New Offspring won’t be remembered as the best season.

What's on at the cinemas over the school holidays

Tom Holland in a scene from the movie Spider-man: Homecoming.

Escape from reality over the holidays with a trip to the movies.

Gateway to $3 billion, 4800 home new Coast city opens

The start of Peter Crosby Way at Sippy Downs, the northern access into the Harmony master-planned community at Palmview.

Palmview's $3b master-planned community of Harmony

Millionaire Nathan Birch to offload $55M in property

Nathan Birch wants to focus more on developing properties.

Sydney property investor has announced he is selling up

Fame factor boosts property prices in Byron

The stunning Clarke's Beach in Byron Bay.

House prices surge by an incredible 39.5% in star-studded area

Grass is greener for Warwick real estate

Warwick's rural charm and affordable property prices are enticing buyers from Brisbane.

Quality houses for half the price of Brisbane attracting interest

New prison unlocks market growth

Works have begun on the construction of the new Grafton bridge.

Influx of workers for project drives healthy growth in house prices

Ready to SELL your property?

Post Your Ad Here!