The storm prompted evacuations along the eastern English coast, with 1,000 properties flooded and at least half dozen communities at great risk of high tides and large waves. The Thames Barrier - a series of huge metal plates that can be raised across the entire river - closed for a second time in as many days to protect London from the surge.
"There will still be exceptionally high tides" today and tomorrow, Environment Secretary Owen Paterson said.
Traffic ground to a halt on icy highways and train service was canceled in large parts of Sweden. Tens of thousands of people lost electricity. Strong winds knocked down the city of Vaxjo's Christmas tree.
Scores of flights were canceled at airports in Sweden, Denmark, Norway, Germany and Poland. More than 1,000 people spent the night at Copenhagen airport where 200 flights were canceled yesterday and about 70 today.
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Copenhagen's international airport reopened at 1030 IST after an all-night closure and flights resumed but delays were expected. Some bridges in Scandinavia remained closed and thousands of homes in Sweden and Norway were without power this morning.
In Hamburg, Germany's second-biggest city, the water rose about 4 metres above average flood levels today, hitting heights rarely seen and parts of the city's busy port were shut.