The former reality star said her port door flew off the hinges, water poured into her house and the carpet was left soaked by the freak weather event.
“I actually was scared for my life,” Jules wrote on Instagram.
“My poor neighbourhoods front windows all smashed in. I hope everyone is ok #shookup.”
She went on to show a picture of her garden, saying trees were being cut down and the power was out.
“Stay safe and check the weather before driving anywhere,” she said.
Jules finished by saying: “Can confirm it was a tornado. This explains why I felt like my house was lifting and all the man holes blew in #soscary.”
One woman died and three people were injured during the storm, when a tree fell in a car park.
Emergency services received multiple reports of storm damage across the area from 3.30pm on Sunday, with trees and powerlines down across suburbs from Mona Vale to Forestville.
Police, NSW Ambulance, Fire and Rescue NSW, and rescue helicopters responded to the incident at a car park on Ocean Street, Narrabeen, after reports a tree and powerlines had come down.
A woman believed to be aged in her 70s died at the scene.
NSW Ambulance said a woman in her late teens was treated for spinal and head injuries, while another woman aged in her 70s was treated for multiple injuries. Both were taken to Royal North Shore Hospital in a serious condition.
A young boy was also assessed for minor injuries but did not need to go to hospital.
"This was just a tragic scene to attend. These women were simply in the wrong place at the wrong time when this storm hit," NSW Ambulance Inspector Christie Marks said in a statement.
"As you can imagine the patients had multiple injuries after being hit by falling branches and other debris.
"The strength of the storm is evident in the destruction it caused. Given the size of this tree it's remarkable that there weren't more people injured."
Fire and Rescue NSW crews responded to more than 100 calls for assistance following the wild weather.
"The storm cell, described as a 'mini-cyclone', struck the area around 3.30pm," FRNSW said in a statement.
"The wild winds ripped off sheets of metal from apartment building roofs, knocked other trees onto vehicles and roadways, and tore down powerlines from Dee Why to Narrabeen."
It said a roof was ripped off a shopping centre in Forestville and a partial building collapse occurred in Curl Curl.
With additional reporting by AAP
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