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Scorching conditions and raging wildfires have devastated the dry landscape of Western Australia. With mercury levels forecast to continue soaring above 40C (104F) over the coming days, a major alert for extreme heat has been declared across much of the southwestern region.

Broad Heatwave Warnings Across the Region

This situation follow this month's bushfires in another state, which caused the destruction of homes and fatalities. Intense heat alerts have also been issued for later this week in parts of South Australia and New South Wales, as a system of atmospheric pressure moves eastward, delivering blazing sunshine to much of the region.

The combination of extremely dry land and unbroken heat presents a dangerous scenario for emergency crews.

Worldwide Weather Extremes Trigger Disruption

Elsewhere, a metropolis was plunged into blackout last week after strong winds compromised the city’s power grid, with falling trees knocking out power lines. The stormy weather also led to significant transport delays at a key airport, where numerous air services were grounded. Substantial damage to power systems is anticipated to create ongoing issues as utility companies scramble to reconnect electricity to more than 1 million residents.

Unusual Mist Blankets Typically Clear Region

Meanwhile, a valley famed for its sunny weather and abundant sunlight has endured one of its dullest and foggiest periods on recorded history. A specific type of low cloud, which typically lingers for only a short time, has been remarkably extensive and persistent this year, holding temperatures at a major airport under 8C for more than a week – the most prolonged period in more than three decades. The prolonged haze has been fuelled by exceptional autumn precipitation that left the ground waterlogged.

• Key Factor: Record autumn rainfall soaked the soil.
• Result: Extended and thick fog development.
• Effect: Thermal readings stayed below average for an lengthy time.

Storm Delivers Wintry Weather to Tourist Destination

Turning to Spain, a weather system has ushered in intense rain, strong gales and even snowfall to a group of islands – conditions many would not connect with this popular tourist spot. While snow is not unknown at elevated areas, the storm brought some of the deepest snow depths in 2016 to a protected area, compelling its temporary shutdown.

In addition to the snow, strong winds from the north buffeted the island chain, with gusts exceeding 50mph recorded on multiple locations. The effect of the storm is expected to diminish this week with more typical conditions taking hold.