A colder morning today, -10C/14F, but I was comfortably cool. Front tire flatted last night, possibly right as I turned into the driveway as I detected nothing beforehand and it wasn't until I had gone back out after dinner to move the bike from the side to the back of the house that I saw the flat. Fixed it this morning by swapping out the studded tires for knobby tires on my MTB which was ok because although there are still a few icy spots, only about 2 were not visibly dirty with sidewalk sand and they were easily avoided. A storm is forecasted for Thursday night with 15-30cm (6-12") of snow but as I don't work from Good Friday to Easter Monday inclusive, it could be gone by the time I need to ride in on Tuesday, or the worst of the storm might miss us altogether.