A report from the Austrian Seismological Service of the Central Institute for Meteorology and Geodynamics reported that the quake took place at 01.45 and was clearly felt in southern Carinthia, the region which borders Italy.
A quake of this strength could result in isolated minor damage, the report said.
The Austrian Seismological Service has asked anyone affected by the quake to fill out a form on their homepage or write to them describing their experience.
Did you feel the quake during the night? Let us know - firstname.lastname@example.org