The Black Saturday bushfires were a series of bushfires that either ignited or were already burning across the Australian state of Victoria on and around Saturday, 7 February 2009, and were one of Australia's all-time worst bushfire disasters. The fires occurred during extreme bushfire weather conditions and resulted in Australia's highest-ever loss of human life from a bushfire, with 173 fatalities. Many people were left homeless as a result.
As many as 400 individual fires were recorded on Saturday 7 February; the day has become widely referred to in Australia as Black Saturday.
The 2009 Victorian Bushfires Royal Commission, headed by Justice Bernard Teague, was held in response to the bushfires.
Background
A week before the fires, a significant heatwave affected southeastern Australia. From 28–30 January, Melbourne broke temperature records by experiencing three consecutive days above , with the temperature peaking at on 30 January, the third hottest day in the city's history.
The wave of heat was caused by a slow-moving high-pressure system that settled over the Tasman Sea, with a combination of an intense tropical low located off the North West Australian coast and a monsoon trough over northern Australia, which produced ideal conditions for hot tropical air to be directed down over southeastern Australia.
The February fires commenced on a day when several localities across the state, including Melbourne, recorded their highest temperatures since records began in 1859. On 6 February 2009—the day before the fires started—the Premier of Victoria John Brumby issued a warning about the extreme weather conditions expected on 7 February: "It's just as bad a day as you can imagine and on top of that the state is just tinder-dry. People need to exercise real common sense tomorrow". The Premier went on to state that it was expected to be the "worst day [of fire conditions] in the history of the state".
Events of 7 February 2009
A total of 358 firefighting personnel, mainly from the Country Fire Authority (CFA) and Department of Sustainability and Environment (DSE), were deployed across the state on Friday evening (6 February) in anticipation of the extreme conditions the following day. By mid-morning Saturday, hot northwesterly winds in excess of hit the state, accompanied by extremely high temperatures and extremely low humidity; a total fire ban was declared for the entire state of Victoria.
As the day progressed, the highest-ever temperatures recorded to date were reached. Melbourne hit , the hottest temperature ever recorded for the city and humidity levels dropped to as low as two percent. The McArthur Forest Fire Danger Index reached unprecedented levels, ranging from 160 to over 200. This was higher than the fire weather conditions experienced on Black Friday in 1939 and Ash Wednesday in 1983.
Around midday, as wind speeds were reaching their peak, an incorrectly-rigged 'SWER' (single-wire earth return) mains power cable was ripped down at Kilmore East. This sparked a bushfire that became the deadliest and most intense firestorm ever recorded in Australia. The overwhelming majority of fire activity occurred between the afternoon of 7 February and 7:00 pm, a period when wind speed and temperature were at their highest, and humidity at its lowest.
Chronology
Wednesday, 28 January 2009
Delburn fire commenced in Central Gippsland; arson suspected.
Wednesday, 4 February
Bunyip State Park blaze commenced.