Flight from MSY to DTW last December after the first snow of the season. Flight was delayed a couple of hours and then we had to circle the airport a couple of times before landing. The runway was not completely free of ice/snow and we proceeded to fishtail down the runway...at least we were slowing down. Caught my connecting flight to BWI and after sitting on the tarmac for a couple of hours, we proceeded to takeoff. The runway STILL hadn't been completely cleared of snow/ice ,and we fishtailed down the runway as we were speeding up on the runway to takeoff. I thought the plane was going to careen out of control. My travel buddy looked at me wide eyed during the takeoff completely speechless. So glad to make it off the ground.