Hopefully you´ve brought your toothbrush with you , because I´m afraid you could be in for a long wait.
There is a heavy snowfall in Copenhagen right now,but in addition to the snow , they have technical problems with some sort of equipment that handles arriving planes at low visibility/bad weather. At this moment (feb 12th 17.00h) CPH cannot handle any arrivals - all arrivals are diverted.
See:
http://www.dr.dk/nyheder/indland/art...ticleID=234274
Added at 18:00: CPH seems to be open for arrivals again !