•   
  •   

Australia A Hot And Dry Australian Summer Means Heatwaves And Fire Risk Ahead

08:55  29 november  2019
08:55  29 november  2019 Source:   gizmodo.com.au

Hazelwood Power Corporation found guilty of putting workers and community at risk during 2014 mine fire

  Hazelwood Power Corporation found guilty of putting workers and community at risk during 2014 mine fire The operator of the Hazelwood Power Station has been found guilty of 10 of 12 charges of putting its workforce and nearby communities at risk in relation to the 2014 mine fire. The fire started on February 9 when two nearby bushfires spread into the open-cut coal mine and burnt for 45 days, blanketing the region in thick smoke and coal dust.A Supreme Court jury found the company did not adequately assess the risk of fire, did not have an adequate reticulated water system, failed to slash vegetation around the mine and did not take action early enough to wet down areas around the mine.

MELBOURNE (Reuters) - Australia 's fire and drought-ravaged east will suffer continued hot and dry conditions this Fire authorities have warned there is worse to come. The forecast offered no relief to Australia 's devastated "This outlook also means the risk of heatwaves is increased," Watkins said.

MELBOURNE (Reuters) - Australia 's fire and drought-ravaged east will suffer continued hot and dry conditions this Fire authorities have warned there is worse to come. The forecast offered no relief to Australia 's devastated "This outlook also means the risk of heatwaves is increased," Watkins said.

a group of clouds in the sky at sunset

Summer is likely to start off hot and dry, according to the Bureau of Meteorology’s summer outlook, released today.

Much of eastern Australia is likely to be hotter and drier than average, driven by the same climate influences that gave us a warmer and drier than average spring.

But these patterns will break down over summer, meaning these conditions may ease for some areas in the second half of the season. Despite this, we’re still likely to see more fires, heatwaves, and dust across eastern Australia in the coming months.

a close up of a map: Rainfall outlook for December 2019. (Image: BOM) Rainfall outlook for December 2019. (Image: BOM)

What drove the climate in 2019

Our current weather comes in the context of a changing climate, which is driving a drying trend across southern Australia and general warming across the country.

Victorian authorities announce first Code Red fire alert in 10 years

  Victorian authorities announce first Code Red fire alert in 10 years Victoria is bracing for one of its hottest November days on record tomorrow with parts of the state preparing for the worst fire conditions in 10 years. "If you live in those areas and a fire occurs, a fire will take your home. You need to make sure you are not there. Code Red says to us that we cannot control a fire if it starts. Move out tonight."Melbourne is getting ready for a burst of summer with the temperature set to nudge 40C in the city.

Likely continued hot and dry weather across much of the nation will increase the risk of heatwaves and Expect elevated fire risks to continue through the summer for many parts of the country, the Bureau of Meteorology says. "This outlook also means the risk of heatwaves is increased, so it's

Image caption A hot and dry summer has been forecast for Australia . The extreme and prolonged heatwaves of 2018-19 caused blackouts and an increase in hospital admissions. The summer forecast means the "heightened risk " of dangerous fires will continue, the bureau says.

In southern Australia, rain during the April to October “cool season” is crucial to fill dams and grow crops and pasture. However, like 17 of the previous 20 cool seasons, 2019 was well below average, meaning a dry landscape leading into the summer months.

The frequency of high temperatures has also increased at all times of year, with the greatest increase in spring.

But summer, like spring, will also be influenced by two other significant climate drivers: a change in ocean temperatures in the Indian Ocean, and warm winds above Antarctica pushing our weather systems north.

Indian Ocean

The first driver is a near-record strong positive Indian Ocean Dipole (IOD). A positive IOD occurs when warmer than average water develops near the Horn of Africa, and cooler waters emerge off Indonesia.

Tasmanian fire authorities not prepared for coming season, insiders say

  Tasmanian fire authorities not prepared for coming season, insiders say Insiders from within the Tasmania Fire Service raise the alarm on a lack of resources and staff they say could leave the state exposed during the busy summer fire season. Sources have told the ABC the southern region is struggling for volunteers, with people from the state's north-west called in to backfill strike teams during a recent total fire ban.There were 159 overtime shifts recorded in the south alone in October, they said — a bill of about $160,000.

Australia 's fire and drought-ravaged east will suffer continued hot and dry conditions this summer , increasing the chances of "This outlook also means the risk of heatwaves is increased," Watkins said. Australia 's shaky power grid has suffered blackouts over the past two summers as ageing

MELBOURNE (Reuters) - Australia 's fire and drought-ravaged east will suffer continued hot and dry conditions this Fire authorities have warned there is worse to come. The forecast offered no relief to Australia 's devastated "This outlook also means the risk of heatwaves is increased," Watkins said.

This pattern draws moisture towards Africa - where in recent weeks they have seen flooding and landslides - and produces higher pressures over central and southern Australia. This means less rain for Australia in winter and spring.

Usually the IOD events break down by early summer, when the monsoon arrives in the southern hemisphere. However, this year the monsoon has been very sluggish moving south – in fact it was the latest retreat on record from India – and international climate models suggests the positive IOD may not end until January.

a close up of a map: Rainfall outlook for summer 2019-20. (Image: BOM) Rainfall outlook for summer 2019-20. (Image: BOM)

Southern Ocean

The other unusually persistent climate driver is a negative Southern Annular Mode (SAM), which means weather systems over the Southern Ocean - the fronts and lows and wild winds - are further north than usual. This means more days of westerly winds for Australia.

In western Tasmania, where those winds are coming off the ocean, it means cooler and wetter weather. In contrast, in southeast Queensland and New South Wales, where westerlies blow across long fetches of land, this air is dry and hot.

Perth has not endured a heatwave in almost four years, but that could be about to change

  Perth has not endured a heatwave in almost four years, but that could be about to change The term 'heatwave' gets thrown about during Perth's warmer months when temperatures climb into uncomfortable territory, but the city has actually escaped the past three summers without one. The last time WA's Department of Health declared an official heatwave was in February 2016, when Perth's maximum temperature surpassed 40 degrees Celsius for four days in a row. The department defines a heatwave as three or more consecutive days when the forecast minimum and maximum temperatures average at least 32C.

Australia 's fire and drought-ravaged east will suffer continued hot and dry conditions this summer , increasing The hot , dry spring led to an early start to Australia ’s bushfire season, with people killed and more than 500 “This outlook also means the risk of heatwaves is increased,” Watkins said.

MELBOURNE (REUTERS) - Australia 's fire and drought-ravaged east will suffer continued hot and dry conditions this summer , increasing the chances of severe weather events, the country's weather bureau said on Thursday (Nov 28).

This persistent period of negative SAM in 2019 was triggered by a sudden warming of the stratosphere above Antarctica - a rare event identified in early September.

Models suggest the negative SAM will decay in December. This means the second half of summer is less likely to be influenced by as many periods of these strong westerlies.

But while both these dry climate drivers are expected to be gone by midsummer, their legacy will take some time to fade.

The positive IOD and the dry conditions we have seen in winter and spring are associated with severe fire seasons for southeast Australia in the following summer.

And while the drying influences are likely to ease, the temperature outlook indicates that days are very likely to remain warmer than average.

We also know that any delay in the monsoon will keep air drier for longer across Australia, and potentially aid in heating up the continent.

a close up of a map: Maximum temperature outlook for summer 2019-20. (Image: BOM) Maximum temperature outlook for summer 2019-20. (Image: BOM)

What about the wet season?

For areas of southern Queensland and northeastern NSW, the wet season will eventually bring seasonal rains, although heatwaves are likely to continue through summer.

So, while the outlook for below average rainfall may ease over summer months for some areas, the lead-up to summer means Australia’s landscape is already very dry. Even a normal summer in the south will mean little easing of the dry until at least autumn.

With dry and hot conditions looking likely this summer, it’s important to stay safe, have an emergency plan in place, look after your friends and neighbours in the hot times, and always listen to advice from your local emergency services.


TV stars Jim Wilson and Chris Bath make a desperate attempt to save their family home caught in the path of raging bushfires .
The TV couple revealed the threat to their home in New South Wales' Lower Hunter Valley was so dangerous by Thursday they made the decision to invest heavily in fire-protection gear. The well-known presenters added their cars are filled with some of their most precious belongings should they need to make a quick getaway from the flames.

—   Share news in the SOC. Networks

Topical videos:

usr: 1
This is interesting!