Snowfall warning issued for Calgary and surrounding areas; here's the lowdown

The midnight run of forecast models changed up our plans in a significant way. As of Tuesday morning, Calgary is now among the communities under a snowfall warning:These warnings call for 10 to 20 centimetres of snow, with up to a foot (30 cm) possible in the mountain regions. Yesterday, I called for 10 to 12 centimetres; this remains in the cards, with a select few forecast models adjusting instead for up to 18 cm or so. Systems crossing the Rockies can be so cantankerous. Now that this one has