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Scorching conditions and raging bushfires have swept through the parched landscape of Western Australia. With mercury levels expected to persist climbing above 40C (104F) over the coming days, a major alert for extreme heat has been declared across a large portion of the south-west.

Broad Extreme Heat Alerts Throughout the Region

These conditions follow this month's fires in another state, which resulted in the destruction of homes and loss of life. Severe heatwave warnings have also been activated for the coming days in areas within SA and New South Wales, as a system of atmospheric pressure moves eastward, delivering blazing heat to much of the region.

The mix of tinder-dry land and unbroken high temperatures creates a volatile scenario for firefighters.

Worldwide Weather Extremes Trigger Disruption

In another part of the world, a metropolis was plunged into darkness recently after powerful gusts compromised the city’s power grid, with toppled trees bringing down power lines. The stormy weather also led to significant transport delays at a key airport, where hundreds of flights were grounded. Substantial impact on power systems is anticipated to create ongoing issues as utility companies scramble to reconnect electricity to more than 1 million residents.

Atypical Mist Covers Typically Clear Region

Meanwhile, a region famed for its clear skies and plentiful sunlight has endured one of its dullest and foggiest weeks on recorded history. A particular form of fog, which typically lingers for only a short time, has been remarkably extensive and persistent this year, holding temperatures at a major airport below 8C for more than a week – the most prolonged period in over three decades. The prolonged fog has been fuelled by exceptional fall precipitation that resulted in the ground waterlogged.

• Key Factor: Exceptional autumn rainfall soaked the soil.
• Outcome: Prolonged and dense fog development.
• Impact: Thermal readings stayed unseasonably low for an lengthy period.

Severe Weather Delivers Wintry Weather to Holiday Destination

Turning to Spain, a weather system has ushered in intense rain, powerful gales and even snowfall to a set of islands – weather many would not connect with this popular holiday destination. While snow is not unheard of at higher ground, the storm brought some of the deepest snow depths since 2016 to a national park, forcing its temporary shutdown.

Alongside the snow, strong winds from the north swept across the archipelago, with gusts reaching 50mph observed on multiple locations. The effect of the weather event is forecast to diminish this week with more seasonal weather taking hold.