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Portugal and Spain are once more recovering from significant flooding after Tempest Claudia unleashed heavy rain and powerful gusts over the past seven days.

Claudia's Genesis and Journey

This meteorological event originated from an area of low pressure that had earlier caused early season freezing temperatures and snowfall through the eastern regions of the Canadian territory and the north-eastern US during the beginning of the eleventh month.

Claudia journeyed east across the Atlantic in the middle of the second week of November before slowing and stalling to the north-west of the Iberian region, trapped within a trough of an progressively more wavy atmospheric river.

Effects in Iberia

The northwestern Spanish region of Galicia was hit first, with three to six inches of rain pouring down along its western coastline in just one full day up to the evening of Wednesday as a slow-moving band of rain drifted across western parts of the Iberian peninsula.

Additional rainfall and electrical storms on Thursday brought flooding to areas in Portugal where an elderly couple died in Lisbon after rising waters from the bursting Tagus River invaded their residence as they were asleep.

Stormy conditions persisted into the weekend, with a violent whirlwind ripping through a campsite and a adjacent hotel in the town of Albufeira in Portugal's south on the weekend's Saturday, claiming the life of an 85-year-old British woman and injuring 28 individuals.

Extended Consequences across the European continent

This system triggered wider effects across western Europe. By drawing warm air from the warmer regions, the system assisted in raising temperatures in France's south-west to nearly 30 degrees Celsius, the nation's all-time high autumn temperature.

By the following Friday, this warm and humid air mass collided with a frigid air system across more northern parts of the continent, forming a rainfall belt stretching from western Ireland to the Russian Federation.

In the UK, this stationary front of rain delivered exceptionally large precipitation amounts, leading to severe flooding in Wales.

As this weather phenomenon continues to weaken early this week, the frigid air will push south, providing the continent its initial glimpse of colder weather.

Related Incidents in California, USA

California experienced a so-called atmospheric river recently, delivering intense precipitation and high-velocity gusts that provoked flash flooding and mudslides in areas scarred by forest fires in the recent past.

In excess of 50 millimetres of rain fell in southern California on Friday, with a additional two inches across extensive areas of California on Saturday.

Over four inches of rain fell over coastal areas of the state's south in all, hitting a full 200 millimetres in spots on high ground.

Such a weather system is a narrow band of warm, moist air originating from the tropics or subtropics.

Burn scar areas including Pacific Palisades and Altadena endured the most intense the flash flooding and landslides, forcing residents to flee.

Across California, a man in his seventies passed away after his automobile was washed off a flooded bridge, and a young girl aged seven and her father were swept into the Pacific by large waves on the California's Central Coast.