Winter Storm WARNING now extended to include Lethbridge, Taber, Vulcsn, Brooks areas. Warning continued for Cardston, Fort Macleod, Pincher Creek, Waterton, Crowsnest Pass areas.

Snowfall WARNING issued for Claresholm, Okotoks, Stavely areas.

A prolonged period of snow is forecast for southwestern Alberta starting Tuesday night  continuing into Thursday.

Total snowfall amounts will be from 20 to 30 cm with some localities possibly exceeding 50 cm. Additionally, moderate to strong gusty northerly winds will develop on Wednesday producing locally poor visibilities in blowing snow.

As the system continues to develop, additional warnings may be the added, most likely in the Lethbridge, Vulcan and Calgary regions.