Not sure if I belong in this thread as Penrith is to the west of the Pennines but is in the far north of England.
After missing the frontal snow tomorrow I am hoping to cash in on some North sea activity on Saturday, despite being west of the Pennines East Cumbria often has potent snow showers from the east if the cold is deep enough.
10cms-15cms was obtained in January and December 2010 on an easterly, small beer compared to places further east but it was very welcome here.
On 15th Fenruary 1979 Penrith recorded 30cms of snow in 24 hours from a strong easterly flow, God knows what it was like in Durham!
Nick, I wouldnt worry about the dewpoints, surface temperatures will be low enough unless you live right on the coast despite the long sea track.
More snow for you, you lucky bugger
Andy