Dramatic pictures have emerged of a woman being rescued from her car which had become submerged in flood waters following Saturday afternoon's severe storms. The woman was one of two people that had become trapped in rising waters at Zetland in Sydney's inner-east, that was spotted by the same police rescue squad officer on his way to work. She was helped out of the vehicle by the officer and his co-worker at about 6.30pm and did not suffer any injuries. Superintendent Paul Johnston from Fire and Rescue NSW told Daily Mail Australia that the incident was just one of many flash flooding rescues that emergency services had attended from 4pm. 'At the height of the storm we had two hundred calls in the system, mostly about flooding in people' homes and businesses, rescues from flash flooding - in the inner city they're not as dangerous because people are just trapped in their cars and not at risk of being swept away - and automatic fire alarms,' Supt Johnston said. The second round of wild weather in New South Wales came after just two days of clear skies and transformed parts of Sydney and the Blue Mountains into snowfields. Marble-sized hailstones pummelled multiple suburbs in the city's east and west on Saturday evening, coating streets and backyards in sleet despite only lasting from about 4pm until 7pm. Blackheath residents in the Blue Mountains, about 100km west of Sydney, reported hailstones up to 2cm in size, while social media users shared surreal images of snowmen and even snowboarders on the streets of Sydney. Seven buildings collapsed in western Sydney after suffering damage from the storm, with Fire and Rescue crews expected to work through the night to assess the damage. Scroll down for video . A woman had to be rescued from her car which had become trapped in flood waters following Saturday's severe storms . She appeared safe and calm as police and fire and rescue crews assisted her at Zetland in Sydney's inner-east . Several cars were submerged in the flood waters following the flash flooding that struck the city . A combination of hail and water at Enmore in Sydney's inner-west, almost completely submerged a line of cars . Streets and backyards were transformed into snowfields across Sydney and the Blue Mountains. Pictured Maroubra in Sydney's east . An unstable air mass over the top of New South Wales is understood to have generated the east-moving storm. Pictured: Kingsford in Sydney's eastern suburbs . The Bureau of Meteorology issued a severe weather warning for Sydney, Wollongong and the Blue Mountains just before 3:20pm (left), but by 4:15pm the severe storm had hit Sydney after coming in from the west (right) A police spokesperson told Daily Mail Australia that two factories at Huntingwood, in western Sydney, have collapsed due to the weather . Snowing in Sydney? Sydney's west was hit by snow-like hail after the storm travelled east from the Blue Mountains . Marble-sized hail stones pummelled various suburbs in Sydney and the Blue Mountains . NSW Ambulance tweeted: 'Luckily no one injured in this building collapse at Eastern Creek. Be careful if on the icy roads' Ominous looking storm clouds rolled into Sydney Harbour in the afternoon as the sky turned form blue to black and then a strange white . The NRL match between the Sydney Roosters' and St George Illawarra at Allianz Stadium in Sydney had to be temporarily suspended due to hail and lightning . The Bureau of Meteorology warned that the Blue Mountains (pictured), Hawkesbury areas and Sydney would be affected by severe weather . 'There were five major building collapses after half a metre of hail landed on the roof, and they are all on the one stretch on Huntingwood drive in Huntingwood and our crews are still there,' Supt Johnston told Daily Mail Australia. 'These are very large factories, around 200m long, and we've had another two building collapses within a kilometre radius. 'There are 20 trucks and 100 firefighters on the scene now.' The factories were believed to have been mostly empty at the time of the collapse, with only seven people evacuated. No injuries have been reported, however police and ambulance are still investigating at the scene. Sue Pritchard, a spokesperson for the State Emergency Services, told Daily Mail Australia that an 80m by 100m wall had also collapsed nearby at Eastern Creek, where Fire and Rescue NSW and the Rural Fire Service were attending the scene. 'We've had over 800 jobs state wide since 4pm and we've also had one flood rescue,' Ms Pitchard added. 'They have mainly been in Mount Druit, Marrickville and Randwick areas as the storms have come through. 'There's been a lot of hail causing leaking roofs and roof damage. There's meant to be more windy weather about tomorrow, so we're asking people to be proactive and check their properties to make sure nothing can be blown about and secure anything that is loose.' Public transport was temporarily disrupted as was the rugby match between the Sydney Roosters' and St George Illawarra teams at Allianz Stadium in Sydney. Heavy rain, wild winds and hails stones transformed the Blue Mountains and parts of Sydney into snowfields on Saturday evening . Warnings stated that 'large hailstones, heavy rainfall that may lead to flash flooding and damaging winds' were predicted . State Emergency Services issued cautions and advice to residents affected by the storm on their social media pages . Hail stones piled up behind a door or a window during the storms, which only lasted until 7pm . Hail covers a road and vehicle in the suburb of Alexandria just after the storm passed . Twitter and Instagram users captured images of the storm: Lightning strikes in Sydney as the storm rolled in . Hail is seen on the road in the suburb of Alexandria. Large areas of Sydney have been hit by a hail storm this afternoon . Backyards and streets were transformed into snowfields within minutes by the heavy rain and hail . The Blue Mountains, the Hawkesbury and most of Sydney were issued with severe weather warnings just before 4pm, with the Bureau of Meteorology warning the areas to expect 'large hailstones, heavy rainfall that may lead to flash flooding and damaging winds'. The collapsed wall at Eastern Creek led to diversions along various routes on the Great Western Highway and police reported flooding on Parramatta Road and Flood Street. The storm later moved north-west of Sydney, affecting the Maitland, Cessnock, Greater Newcastle, Gosford and Wyong areas before heading further north towards Newcastle and Williamtown. It  cleared off the coast by 7pm. An unstable low air mass over the top of New South Wales is understood to have generated the east-moving storm over the afternoon, according to a Weather Watch spokesperson. State Emergency Services (SES) advises anyone in the affected areas to keep clear of fallen power lines, creeks and storm drains and warns not to walk, ride bikes or drive through flood water. Forecast for Sydney predict more bad weather at the end of the week, with the SES urging people to be prepared for the next bought of wild weather, including wild winds on Sunday. 'There's still going to be stormy weather next week and so now is the time to prepare so that you don't find yourself with a hefty bill for damages that you could have prevented,' Sue Pritchard said. A statement from the SES on Saturday night added: 'Strong winds are expected tomorrow in parts of Western Sydney, the Blue Mountains and the Hawkesbury. 'With the recent heavy rains the ground is saturated meaning it is more likely that trees may fall. The winds may also blow around any inadequately secured items such as tarping, storm debris or loose roof sheeting from the storms earlier in the week.' A building collapse at Eastern Creek has led to diversions along various routes on the Great Western Highway . State Emergency Services have advised that cars be kept under shelter and away from trees . People should stay away from fallen power lines, unplug any electrical appliances and avoid using their phones during the storm .
Severe thunderstorm warnings were issued for Blue Mountains, the Hawkesbury and Sydney on Saturday afternoon . 'Large hailstones, heavy rainfall that may lead to flash flooding and damaging winds' were forecast just after 3pm . Hails stones up to 2cm large were reported while social media users shared images of how the storm transformed various areas into snowfields . Seven buildings, including five 200m long factories, have collapsed under half a metre of hail in western Sydney . State Emergency Services attended over 800 calls for help, however the storm had cleared by 7pm .