Woke up by an earthquake this morning

The whole western part of Norway woke up to an earthquake around 6 AM this morning, the quake had its epicenter off the Norwegian coast in the North Sea and had a 4, 6 magnitude, pretty weak on a global scale (especially for countries like the US and Asian countries that are used to having stronger quakes) but Norway rarely ever gets earthquakes and even magnitude 3 ones make the news headlines and people call in from the whole region telling about windows, doors and other objects rattle in their houses. I was awake in bed and thought it was just a heavy vehicle driving by my apartment at first but then I figured that no vehicles ever driving by would make the whole apartment shake like that and it shook enough for me to notice it was something out of the ordinary. Got push notifications from several news sources here in Norway shortly following the quake that confirmed that an earthquake off the Norwegian coast had taken place and now the oil rig Snorre B has closed down as result, to be on the safe side.