Thanks to Madnorthnorthwest for sharing this with us:

If you are in Vancouver for the next two days. They are filming on Homer street just down the street from the main post office. Cant miss it, they have 2 streets long covered in fake snow & a thousand movie trucks around. Lady from the crew said it was still being set up, so odds are they wont be shooting till later tonight.

If anyone is able to take pictures from the set, please do so and submit them. Update: it seems someone snagged the pictures from the set, click here to view them