Bulahdelah tornado
The 1970 Bulahdelah tornado was a violent tornado which occurred near the town of Bulahdelah north-northeast of Newcastle, New South Wales, Australia on 1 January 1970, and is thought to be the most destructive and powerful tornado ever documented in Australia. On BoM's storm archive, the tornado is given the rating of F0 and contains maximum confirmed winds of.
The tornado left a damage path long and wide through the Bulahdelah State Forest. It is estimated that the tornado destroyed over one million trees. Numerous trees were snapped with some being debranched and debarked. A caravan was destroyed and a tractor was lifted into the air, stripped down to its frame and landing upside down. From damage analysis, the storm was stated to have "incredible devastation" and is predicted to have had high end F4-F5 intensity; however, it was never officially rated. The tornado was reported by witnesses as a swirling black cloud surrounded by flying debris, and producing a thunderous roaring sound. The weather system that produced the tornado was a classic set-up for violent tornadoes of the United States.