Portugal and Spain are again recovering from flooding after Storm Claudia brought heavy rain and strong winds last week. The storm developed from an area of low pressure that had earlier driven early season cold and snowy conditions through eastern parts of Canada and the north-eastern US through early November.
The system tracked eastwards across the Atlantic during the second weekend of November before slowing and stalling to the north-west of the Iberian peninsula, caught in the trough of an increasingly amplified, or wavy, jet stream. Spain’s meteorological service AEMET named the storm last Monday before the arrival of several bouts of heavy rainfall, which slowly pushed through during the rest of the week.
