Tempest Claudia Brings Additional Inundation to Portugal and Spain

Portugal and Spain are once more recovering from significant flooding after Storm Claudia brought torrential downpours and powerful gusts last week.

Claudia's Genesis and Journey

This meteorological event developed from an area of low pressure that had earlier caused unseasonably early freezing temperatures and snowfall through the eastern sectors of the Canadian territory and the north-eastern United States during the beginning of the eleventh month.

This storm tracked eastwards across the Atlantic over the second weekend of November before slowing and stalling to the northwestern area of the Iberian region, snared in a dip of an increasingly amplified air current.

Impact on Spain and Portugal

Galicia in north-west Spain was initially impacted, with three to six inches of rain pouring down along its Atlantic coast in just 24 hours up to Wednesday night as a leisurely moving system of rain pushed across the western areas of the Iberian peninsula.

Further showers and thunderstorms on Thursday brought flooding to areas in Portugal where a senior pair perished in the city of Lisbon after rising waters from the bursting Tagus River flooded their dwelling as they were asleep.

Tempestuous weather persisted into the weekend, with a twister devastating a outdoor lodging area and a close-by inn in Albufeira in the south in southern Portugal on the weekend's Saturday, killing an British woman aged 85 and harming two dozen and eight persons.

Wider Effects across the European continent

Claudia had more extensive impacts across western Europe. By drawing warm air from the warmer regions, the system helped temperatures in France's south-west to 29.8C (85.6F), the nation's all-time high late autumn reading.

By last Friday, this warm and humid air mass clashed with a chilly atmospheric body across the northern regions of the continent, generating a rainfall belt stretching from Ireland's west to the Russian Federation.

In the United Kingdom, this stalling band of rain brought exceptionally large precipitation amounts, resulting in significant waterlogging in the Welsh region.

As Claudia continues to weaken at the start of the week, the frigid air will advance southward, delivering to Europe its first taste of the winter season.

Related Incidents in California

California experienced a so-called atmospheric river recently, bringing heavy rain and high-velocity gusts that led to flash flooding and debris flows in regions impacted by forest fires in the recent past.

In excess of 50 millimetres of rain fell in southern California on Friday, with a further 50mm across extensive areas of California on the subsequent Saturday.

More than 100mm of rain accumulated over shoreline regions of southern California in aggregate, hitting 200mm overall in spots on high ground.

This meteorological feature is a narrow band of warm, moist air coming from the equatorial or near-equatorial zones.

Regions previously burned including the Pacific Palisades area and Altadena experienced the most severe the rapid inundations and landslides, prompting evacuations.

Across California, a man in his seventies died after his automobile was swept off a submerged bridge, and a child of seven years and her dad were swept into the Pacific by big swells on the Central Coast.