Ice Ice Baby!
Rode a few miles in the park before nightfall.
As usual, trails near the lot have been XC skied and walked to death, venture further away and there is little traffic.
Expect Ice, a lot of it. I broke ice (not snow) for an hour, when not breaking ice I was riding on shear sheets of it. For reference I was using studded 4" tires at 5-6 PSI.
Breakable ice was usually three or so inches deep, but could be 7-8" in places.
Pretty positive I would have fallen five or more times without studs and would not have been able to ride further than two miles or so in an hour.
Someone rode a set of bud/lou when the trails were in slush condition, this has created a 5" ice rut along the blind trail and what looks to be glass that may make riding these trails a major PIA until the trails thaw, which will be some time away. I know snow riding is fun, but lets use our heads so the trails are somewhat rideable in the freeze thaw months ahead, especially for our non-fat friends.
If it is muddy, stay out. Even with fat tires. Hover bikes are okay, but you better have a time machine.