A couple of weeks ago it was so cold (but not anywhere near as cold as this) that I didn't want to use the self-serve pumps at VLL and so I flew to PTK to let someone else pump gas for me. The ramp over at PAC was covered with drifting snow and I had no choice but to park in the middle of it. When I was done, I started the engine, listened to the ATIS, and called up Ground, got my taxi clearance, and inched the throttle forward. The engine revved, but I didn't budge. A little more power, still no motion. Frak! I thought (well, without the mincing), did Doug chock my nosewheel? So I told Ground I'd be shutting down and why, they said fine, it looks like you have something by your nosewheel. So I shut down, walked out and looked... but there was nothing but loose snow, and not that much of it. Started up again, got a second taxi clearance, this time applied the power slowly but didn't stop until, somewhere around 22", I suddenly started to move.
The same thing happened when I stopped to do my runup. The only thing I could figure is that the pressure of my nosewheel was just enough to melt the snow, which then quickly refroze to ice in the cold wind.
It would have been nice if they could keep the ramp clear in front of the FBO, but there was enough blowing and drifting that it would probably have been a losing battle to try. The snow was drifting pretty good on the exit taxiways too. I'd hate to think of what PTK is like today.