WAVY.com

Australia’s Wildfires: An In-Depth Look

EAST PROVIDENCE, R.I. (WPRI) — The images coming out of Australia are hellish, to say the least. According to CBS News, crews have been battling wildfires for the last five months. It’s estimated that close to 200 fires are still burning as of the start of 2020.

Nationwide, at least 25 people have been killed and 2,000 homes have been destroyed as approximately 20 million acres have burned. That’s equal to 31,250 square miles. For comparison, Rhode Island is 1,212 square miles, meaning the area affected is 25 times the size of Rhode Island, or the entirety of Rhode Island, Massachusetts, Vermont, and New Hampshire combined.


State Government of Victoria via AP

But what is causing these wildfires to rage out of control? Like those seen recently in the western U.S., much of the issue revolves around the weather conditions including the lack of rain and extreme temperatures.

Across the southern hemisphere, it’s currently summer. During the last month of 2019, the Australian Bureau of Meteorology recorded maximum temperatures across much of the country between 39°C and 42°C. (102°F and 107°F)

Australian Bureau of Meteorology

On top of the heat, much of the country is also in a drought. The Australian Bureau of Meteorology also reports this past November was the driest on record.

Australian Bureau of Meteorology

Also believed to be aiding in the drought condition is the Indian Ocean Dipole [IOD]. During periods of a positive index, there is a better chance for dry weather across Australia.

Between July and December of 2019, the IOD reached its strongest positive signal in five years. This has likely helped with the drought conditions across Australia. But, if there is any good news, the signal is weakening, moving toward a neutral signal. This will hopefully increase chances for rain across the continent.

The damage has already been done, however. The hot and dry conditions have allowed for much of the vegetation to dry out, becoming perfect fuel for wildfires. Typically, fires are started naturally, from a lightning strike. Other times, fires are intentionally started by humans. According to the NSW Police Force, 24 people have been charged with deliberately lighting bushfires.

With little to no rain falling across the country, the fires will continue to burn out of control. In some cases, the fires are so intense, they are generating their own weather — pyrocumulus clouds.

Pyrocumulus Cloud: Australian Bureau of Meteorology

This weather phenomenon is helping to accelerate the already dire situation. These pyrocumulus clouds can cause thunderstorms with additional lightning, leading to additional fires.

Conditions will not improve until significant rain. Across Western Australia, the next week could bring close to 3-4″ of rain while much of the center of the nation sees nearly no new rainfall. Eastern Australia, where many fires continue to burn, could see less than an inch of rain.

How to help evacuees

How to help firefighters

How to help wildlife

Related: BBB warns of donating to fake Australian wildfire relief funds