UPDATE: 19:20
The snowstorm has arrived earlier than expected. There have already been several car accidents, and some rural roads are experiencing drifting snow. The centre of Skellefteå has also been the scene of some traffic problems caused by the snow.
UPDATE: 18:30
A yellow warning has also been issued for intense snowfall and strong winds during Thursday. The warning applies from Thursday night until Friday morning. It stretches along large parts of the Västerbotten coast, from Kåge in the north to Umeå in the south.
Car journeys may be tough due to snow on the roads. SMHI also flags that there may be other problems due to traffic accidents and stationary vehicles.
"Travel times can be longer due to drifting, slipping, poor visibility and snow drifts. Allow more time for your journey and adjust your speed to road conditions and visibility," writes SMHI in the warning.