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Scorching conditions and raging wildfires have devastated the parched landscape of Western Australia. With temperatures expected to continue climbing above 40C (104F) over the next few days, a severe alert for extreme heat has been declared across a large portion of the south-west.

Widespread Extreme Heat Alerts Throughout Multiple States

These conditions follow this month's fires in another state, which caused the destruction of properties and fatalities. Intense heatwave warnings have also been activated for the coming days in areas within SA and NSW, as a ridge of high pressure shifts eastward, delivering intense heat to much of the area.

The mix of extremely dry vegetation and relentless heat creates a volatile situation for emergency crews.

Global Weather Extremes Trigger Chaos

Elsewhere, a metropolis was plunged into darkness last week after powerful gusts compromised the urban power grid, with falling trees bringing down power lines. The weather conditions also led to significant transport delays at a key airport, where hundreds of air services were cancelled. Substantial impact on power systems is anticipated to create ongoing problems as utility companies work urgently to reconnect electricity to more than 1 million residents.

Unusual Mist Blankets Typically Clear Region

Meanwhile, a region known for its sunny weather and abundant sunlight has endured one of its grayest and most overcast periods on recorded history. A specific type of fog, which usually lasts for only a short time, has been unusually extensive and persistent this year, holding temperatures at a key transport hub below 8C for more than a week – the longest such streak in over three decades. The prolonged haze has been driven by unprecedented autumn rainfall that left soils saturated.

• Key Factor: Record autumn rainfall soaked the soil.
• Outcome: Prolonged and thick fog development.
• Effect: Thermal readings stayed unseasonably low for an extended period.

Severe Weather Delivers Snow to Tourist Islands

And in Spain, a weather system has ushered in intense rainfall, strong gales and even snowfall to a set of islands – weather many would not associate with this favored tourist spot. While snow is not unheard of at elevated areas, the storm brought some of the heaviest accumulations since 2016 to a protected area, compelling its closure.

In addition to the snow, fierce winds from the north buffeted the archipelago, with gusts reaching 50mph observed on multiple islands. The effect of the storm is forecast to ease this week with more typical weather returning.