This is a map of Australia that contains almost nothing, yet it reveals a major change that would have seemed impossible a few years ago.
This is an almost entirely black and white map of Australia, with nothing like it.
Yet this is probably the best news, Season Wise, the country has seen for some time.
Bureau of Meteorology (BOM) has recently released its latest drought statement, This includes the rainfall deficit map for the last 20 months from April 1, 2020 to November 30, 2021.
The map is typically a riot of different shades of red to indicate which parts of the country have failed to see their required rainfall.
But this time it’s different. This marks a notable change for Australia, with almost no red spots on it.
Following back-to-back La Nia climate drivers, almost the entire country has no rainfall at all.
The drought risk is so low, the BoM has said it plans to “actively monitor” drought conditions next month.
“This will be the first time since February 2017 that the Bureau has not formally proactively monitored the duration of the drought,” BoM said in a statement.
However, the Bureau has stated that the long-term trend of reduction in rainfall is continuing considering the broader period of more than 20 months.
Change is ‘remarkable’
sky news weather Meteorologist Alison Osborne told news.com.au that the Bureau’s shift of resources away from focusing on drought data was “remarkable”.
“The biggest change is the severe rainfall deficit in the Queensland region of Wide Bay-Burnett and Macaronia, which have been removed last month due to much higher-than-average rainfall,” she said.
Australia has struggled through its hottest November since records began.
Based on 1900 data, the Bureau’s preliminary analysis showed that Australia’s previous national November record in 1973 was 70 mm of rain, compared to the previous month’s total of 73 mm. was broken from,
In April 2020, as the current map measures, Australia was coming off a spooky bushfire season. But a La Nia brought the heat of rain and flooding later that year. Last month, BoM confirmed that La Nia had returned for a second visit.
The definition of drought in Australia in complex. The BoM measures rainfall levels and long-term lows usually indicate drought.
However, only a few small and isolated areas still have any deficit in rainfall, even relatively minor ones. These include a pocket of goldfields in Western Australia and a small area in north-west Tasmania.
Drought free now, but may not be for long
But the bureau cautioned that the trend was for a decrease in rainfall, given the longer period, except for the current back-to-back La Nias. Once La Nina goes out with her rain, and When El Nio returns, drought may return,
To measure the rainfall deficits since 2017, four years instead of 20 months, southern coastal Queensland, southeastern South Australia and western Victoria as well as southern WA saw the lowest rainfall on record.
“The multi-year rainfall deficit is quite large in some areas, so it is very easy to say ‘not drought’,” Ms Osborne said.
“But for the first time in nearly five years the BoM is not monitoring an active drought.”
The presence of La Nia will help keep Australia nice and sultry most of the time.
In fact, flooding rains are a far greater threat in the coming months.
The probability of above-average tropical cyclones in La Nia years is 65 percent.
The risk of bushfires is also significantly reduced during La Nia. But it does not disappear completely. In fact, all that rain can lead to an abundance of plant life which in turn provides fuel for fires.
AFAC, the National Council for Fire and Emergency Services has released its Bushfire Seasonal Outlook for the summer of 2021, showing that inland NSW and the South West of WA, the Gascoyne and Pilbara regions are blazing this year despite a lack of drought conditions. were at risk.