I was up at NFG on Sunday. There was 3 ft average around the parking lot. They got more snow yesterday and a light dusting today. The report I got from LeConte this morning stated base snow of 54 inches and drifts of up to 80 inches. LeConte is at 6600 ft. Basically everything above 5000 ft in the park still has considerable amounts of snow and it is tough going, but hikers are making it through. It appears to start getting bad around Siler's Bald and continuing to TriCorner.
As for clearing the park of blow downs. Crews are working the areas they can get to right now. I cleared Doe Knob to Russell Field a couple weeks ago. Crews have finished from Davenport to Mt Cammerer. I heard that a crew did from Fontana to Shuckstack recently. And a crew managed to get from NFG S to Indian Gap.
The SMHC is planning a major blowdown removal effort the first weekend in April. That starts a 3 week window when the park allows use of chainsaws in the backcountry. This is dependent on the snow levels in the park at that time of course. Until then, maintainers will be going out when possible to remove the smaller debris from the trail. At this time, the snow is so deep, a lot of the blowdowns are completely buried under snow.