A post-Christmas storm named Johannes swept across the Nordic nations on Saturday, leaving one person dead and thousands of homes without power.
Forecasters say the storm, which downed trees, disrupted traffic and cut overhead power lines, is moving south and is likely to peak overnight into Sunday.
In Sweden's central town of Sandviken, a man died after being struck by a falling tree branch, the news agency TT reported.
Police spokesperson Mats Lann told AFP news agency that the man was taken to the hospital but died from his injuries.
SVT reported that the man was in his 50s and had been walking in a nature reserve near Kungsberget ski resort.
In Jarvso, a person was taken to the hospital after becoming trapped under a sheet metal roof that had blown down, the broadcaster said.
More than 40,000 homes were left without power and numerous rail services were canceled, TT reported.
Wind speeds approaching hurricane strength were recorded in parts of the country.
News outlet Aftonbladet cited a forecaster as saying Johannes was now moving south and that the country would experience even stronger winds on Saturday night.
Known as Hannes in Finland, the storm caused hazardous travel conditions with strong winds and up to seven-meter waves, the Helsinki Times reported.
More than 5,000 homes lost power in the early hours of Saturday, with electricity cut to a wider area throughout the day, the paper said.
Public broadcaster Yle put the total number of homes without power at 33,000.
Flights at Kittila airport in northern Finland were grounded after heavy winds pushed a passenger jet and a smaller plane off the runway and into a bank of snow, local media reported. There were no injuries.
Several ferry and cruise routes were suspended due to dangerous sea conditions.
Local newspapers wrote that strong winds combined with snow created whiteout conditions in several regions.
In Norway's Nordland region, emergency crews were pushed to their limits as the fire department responded to more than 200 weather‑related incidents, broadcaster NKO reported.
The storm cut power to around 23,000 homes in Nordland, a sparsely populated area. A further 9,000 were without electricity in the Inland region.
Several flights, rail and ferry services were canceled and roads were closed due to the storm conditions.