BERLIN, Germany (AP) — Deadly winter weather blasted Europe for yet another day yesterday, trapping hundreds of people in Alpine regions, whipping up high winds that caused flight cancellations and increasing the risks of more deadly avalanches.

At least 13 people have been killed in weather-related accidents in Europe over the last week, most of them from avalanches.

In Norway, attempts to find the bodies of four skiers were again put on hold due to poor visibility and heavy snowfall. A 29-year-old Swedish woman and three Finns, aged 29, 32 and 36, were presumed dead after a 300-metre (990-foot) wide avalanche hit a valley near the northern city of Tromsoe last week.

Romanian police on Tuesday found the frozen body of a 67-year-old man in a parking lot in the southern city of Slatina after his wife reported he hadn’t returned from work. Temperatures in Romania plunged to a low of minus 24 Celsius (minus 11.2 Fahrenheit).

In Austria, hundreds of residents were stuck in their homes due to blocked roads and some regions experienced power outages after snow-laden trees took down power lines.

Schools in some Austrian regions remained closed for a second day and homeowners were advised to remove snow from their roofs after several buildings collapsed. One 78-year-old man was severely injured when he fell off his roof in Turrach while shovelling snow, Austrian public broadcaster ORF reported.

On Monday night, 11 German hikers had to be rescued by mountaineers from a cabin near Salzburg, after having been snowed in without electricity and little food since Friday. Other people have also been killed by avalanches in Switzerland, Austria and Germany, and authorities warned that continuing snowfall is increasing the risk of more avalanches.

In the northern coastal German city of Hamburg, residents were preparing for a storm flood caused by a winter gale, the German news agency dpa reported.

In the Netherlands, Amsterdam’s busy Schiphol Airport saw nearly 25 per cent of its flights cancelled yesterday. Dutch carrier KLM cancelled 159 flights to and from European destinations. Flight cancellations were also reported in Slovakia.

Low-lying Dutch coastal regions were being hit by strong winds and wild seas, and local water authorities were checking dikes holding back all that water to make sure they were not damaged.

The Noorderzijlvest water authority said it was monitoring dikes because of debris floating in the sea after 281 shipping containers tumbled off a cargo ship in a storm last week. Many of the containers are still at sea and some have broken open.

“A fridge or container that is rammed against a dike can cause damage,” the authority said.

Heavy snowfall and strong winds were also reported over central Scandinavia, hampering efforts to restore electricity that had gone out after another storm swept through on January 2.

In Greece, schools in Athens and many surrounding areas remained closed after snow blanketed the capital. Some rural mountain roads were also closed.

Dozens of refugees housed in tents at a migrant camp in northern Greece protested their harsh living conditions as temperatures in some areas sunk to minus 20 degrees Celsius (minus 5 degrees Fahrenheit). Snow was even reported on many of Greece’s islands.