Issued at 4:15 PM MST Thursday 8 November 2012
Up to 25 centimetres of snow expected by Saturday morning.
A storm system located over the central American Rockies has spread an area of snow into Southern Alberta this afternoon. Snow will become heavy tonight as the storm system intensifies. At this time the axis of the heaviest snow is expected to be situated over the Okotoks, Crowsnest Pass, Cardston, Brooks, and Lethbridge regions where up to 40 centimetres is possible. Other warned regions can expect between 15 to 25 centimeters of snow before the storm system pulls away on Saturday. Areas of local blowing snow in combination with falling snow will produce poor visibilities at times so motorists should be prepared for very poor driving conditions across much of Southern Alberta tonight through to Saturday morning.