Stripper head stubble helps a lot, it doesn't take much snow to insulate and once it does snow it doesn't melt because of the shade from all the stubble.  We grow some of the same varieties as in KS, like Chrome, Monument, and we used to grow T81, T158, Jagalene, 2137 and a few others with good success most years.  I would post some pictures, but our wheat is completely burned off but will regrow from the crown if it is still alive.  It is warming up to 50F today with wind gusts to 50 MPH also.  We grew some LCS Jet, a variety adapted to the PNW, but had to drop it because it got hurt by springtime cold snaps after greenup much like your pictures.  Central plains varieties handled the cold much better.  Jet was also a bit later and had poor testweight and shriveled kernels if we missed a rain during grain fill, but surprisingly still yielded OK.