Power blackouts that left millions of people across Spain and Portugal without electricity may have been caused by a bizarre atmospheric phenomenon, though the true cause is yet to be determined.

States of emergency throughout Spain and Portugal are being lifted on Tuesday, except in Valencia, as the Iberian Peninsula starts to regain power after an unprecedented outage on Monday.  The outage hit Spain,

Spain and Portugal have regained access to electricity after one of Europe’s worst blackouts paralysed transport systems, disrupted mobile communications and postponed medical procedures.