@itvnews: A rare and extreme sandstorm hit Harbin in Heilongjiang province in northern China on Saturday, turning daytime as dark as night in just 10 seconds. The storm brought level-13 hurricane-force winds and reduced visibility to under 100 metres, with a massive wall of sand captured on camera rolling across the city. Trees were uprooted, vehicles were damaged, and power lines were brought down. One local said weather this extreme has barely been seen in the region in 40 years. Meteorologists say a cold air mass collided with warmer air, triggering a fast-developing squall line that lifted dry soil into a towering dust wall — and so far, no casualties have been reported. #Harbin #China #Sandstorm #ExtremeWeather #Heilongjiang