It doesnt have to be a big whopping snow, just something that sticks out as odd or unusual. I have 3
1-Many years ago i was out in the back yard taking out the trash. It was 33 and misty/foggy out. No mention of snow in the forecast as far as i can remember. Anyway, all of a sudden these huge glops of snow started to come down. They were so large you could hear them hit the ground. Lasted about 20 minutes.
2-The forecast was for rain possibly mixed with snow with no accumulations. Was in 1st period in HS and looking out the window and the rain kept getting whiter. Soon enough it was heavy wet snow and we were let out right away. Ended up with a foot.
3-A Noreaster went by and after it the wind stayed nne with low clouds and temps falling into the low 20's. It looked like a thick fog but these tiny individual ice needles were falling. It lasted all day and they were so small they only accumulated in corners where the wind blew them 2 or 3 inches deep. Never seen anything like it since.