"It was much stronger than I thought," the 62-year-old academic tells AFP as he steps out of the machine on the campus of the University of California, Fullerton.
Once a year, this specially designed trailer goes on a week-long tour to educate Californians about what to do when the earth begins to move in one of the most seismically active parts of the world.
The state lives with the constant knowledge that it could be struck at any minute by "The Big One" -- a powerful quake projected to kill 1,800 people, injure 53,000 and cause $200 billion of damage.
There are more than 500 active faults in California, which together generate thousands of tremors every year.
The majority are small -- barely noticed by the 40 million people who live here.
But others can be big enough to cause real damage, and California's Office of Emergency Services (CAL OES) wants people to know what to do.
"When you do feel that shaking, we want everybody to drop, cover and hold on," says Jon Gudel of CAL OES.
"It's exactly what it sounds like: you try to find something sturdy, preferably a table, drop underneath it, cover your head and neck area, and then hold on to that table until the shaking ends."
- Disaster guaranteed -
The walls of the quake simulator are covered with photos showing the aftermaths of some of the worst geological disasters to hit California.
They include the Great San Francisco earthquake, which destroyed 80 percent of the city in 1906, and the Northridge earthquake in 1994, which killed 72 people around Los Angeles, pancaking elevated highways.
Andrea Okoh, who lives along the San Andreas Fault, a scar stretching 800 miles (1,300 kilometers) across the state, admits to being "extremely worried."
The 36-year-old human resources director has bolted her furniture to the wall since an earthquake woke her in the middle of the night in January.
"Since I was a child, we've had earthquakes, but lately, when we have them, they're more intense and they're closer together," she says. "That is scary."
Geologist Ashleigh Kuiroz says an apparent recent rash of quakes is not an indicator that The Big One is imminent.
But in some ways, they are helpful.
"They are a great reminder to maybe think about getting an earthquake kit ready for your house," she says.
"Make sure that you have pet food, make sure you have the medication that you need, first aid supplies, things like that."
Organizers also recommend that residents and tourists install the "MyShake" app, which can give a vital few seconds warning of a tremor.
Despite decades of study and a global array of sensors, seismologists say it's impossible to predict when a destructive quake will strike.
But the one thing they can say with absolute certainty is that it will definitely happen.
"It's not a matter of 'if' but 'when'," says Gudel. "That's why it's important to be prepared."
Magnitude 6.5 quake hits Indonesia's Papua: USGS
Jakarta (AFP) Oct 16, 2025 -
A magnitude 6.5 earthquake struck the eastern Indonesian province of Papua on Thursday, the US Geological Survey said, but there was no tsunami warning and no immediate reports of damage.
The epicentre of the quake, which struck around 2:48 pm local time (0548 GMT), was about 200 kilometres (125 miles) from the city of Jayapura, at a depth of 35 kilometres, the USGS said.
The Pacific Tsunami Warning Center in Hawaii said there was no threat of a tsunami from the quake.
Indonesia's Meteorology, Climatology and Geophysics Agency (BMKG) recorded the quake with a magnitude of 6.4 at a depth of 16 kilometres.
The agency's earthquake and tsunami director Daryono, who goes by one name, said in a statement no aftershocks had yet been recorded.
Indonesia, a vast archipelagic nation, experiences frequent earthquakes due to its position on the Pacific "Ring of Fire".
The arc of intense seismic activity, where tectonic plates collide, stretches from Japan through Southeast Asia and across the Pacific basin.
Indonesia's Papua is on the western half of the large Pacific island it shares with Papua New Guinea.
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