1961 Western Australian bushfires

1961 Western Australian bushfires

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1961 Western Australian bushfires

In early 1961, a series of bushfires burned in the southwest of Western Australia. ^[1] The devastating fires burned large areas of forest in and around Dwellingup from 20 to 24 January, at Pemberton and in the Shannon River region between 11 and 15 February,^[1] and in the Augusta-Margaret River area in early March. There were also major fires which burned in the Darling Scarp around Kalamunda. The towns of Dwellingup and Karridale were largely destroyed by the fires, as were a number of sawmills that had fallen into disuse around fifty years before the fires. There was no loss of human life.

Whilst the 1960 rainy season over the affected region had not been excessively dry, rainfall had been below average over the region affected by the fires ever since August of that year - thus the forests were perhaps even drier than they would normally be by January. However, the underlying cause of the Dwellingup fires lay far to the north in the Pilbara, where a tropical cyclone formed on 18 January north of Onslow and moved steadily southwards, hitting that town on 20 January. With a strong high pressure system to the east of the cyclone remaining almost stationary for some days, hot north-easterly winds developed and became so intense that by the 20th maximum temperatures throughout the south west were uniformly above and remained at that level for the following five days. During this period, the cyclone moved slowly along the coast and as it drenched Onslow and the neighbouring district, only dry thunderstorms occurred in the south-west, which started fires that spread extremely rapidly in the hot, windy conditions.

The first fires were reported from Dwellingup, south of Perth, Western Australia on 19 January and the following day fires erupted in the timbered country of the Darling Scarp around Mundaring and Mount Helena. Although as the cyclone tracked down the west coast some rain came around 24 January to ease the fires, not all of them were fully extinguished. Moreover, as the normal dry summer weather evaporated further moisture from the forests, when another more severe cyclone hit Onslow on 24 February it caused even stronger winds (sustained at up to with much stronger gusts) and as this cyclone did not produce any rain since it moved inland and lost intensity, decaying bushfires were re-ignited.

The fire from Dwellingup consequently moved downslope toward the major town of Pinjarra where it burned a significant portion of the town's buildings?123 people were left homeless. As the forests surrounding began re-igniting, the entire population of a number of other mill towns was relocated to Dwellingup in the following days. The fires continued to burn owing to the strong winds, and many tiny timber towns were completely burnt out - Holyoake, Nanga Brook, Marrinup and Banksiadale; and were never re-built.

Ironically, it was the rain from Onslow's third cyclone in five weeks that finally put out the burning fires. However, in all it is estimated that the fires burned a total of of bushland, and property damage far exceeded this.

Following the fires, a Royal Commission was conducted to investigate causes and in following years many recommendations were made to improve controlled burning in the tall eucalypt forests of the south-west. However, many critics have noted that controlled burning in Western Australian forests was already widely practised before the 1961 fires.