Darwin residents were woken early on Tuesday morning after a giant 7.6 magnitude earthquake struck in Indonesia's east.
The undersea quake occurred shortly after 3am (local time) at a depth of 97km, the the European Mediterranean Seismological Centre said, with more than 2,500 reports made to government agency Geoscience Australia.
ABC reporter Myles Houlbrook-Walk described the earthquake as "something like out of a horror movie".
"You think you're having a bad dream, you hear this loud low rumbling and it's waking everyone," he told ABC Breakfast, adding several items fell from his kitchen top and dinner table.
One resident told Nine News his car was shaking in his driveway. Another explained on social media that the apartment block she resides was shaking from "side to side".
Olympian Nova Perris said her house was "shaking like crazy" and pictures fell off her wall.
"Holy s***! That Earthquake was freaking scary as!" she tweeted.
Australian musician Vassy said she had never experienced anything like it.
There is no tsunami threat to Australia.
Some residents took to social media to share images and videos of people evacuating their buildings during the earthquake.
Emergency services minister Murray Watt said there was no reports of damage at this stage.
Do you have a story tip? Email: firstname.lastname@example.org.