Rain, at times heavy, is expected.What: 40 to 70 mm accompanied by high freezing levels.Where:Trans-Canada Highway - Eagle Pass to Rogers Pass, West Columbia, Yoho Park - Kootenay Park, Kootenay Lake (north of Balfour), Arrow Lakes - Slocan Lake (areas north and east of Slocan and Nakusp).When:Now until Friday evening.Additional information: An atmospheric river has been affecting southern B.C. this week and will persist through Friday delivering 40 to 70 mm of rain by Friday evening. This is on top of what has already fallen earlier this week. Freezing levels will range from 2000 to 2600 metres, except possibly lowering to 1600 to 1800 metres in heavy precipitation in the Yoho Park region on Friday. Snowmelt from higher elevations may increase the impacts associated with this rainfall event. Rain is expected to subside on Friday evening when the atmospheric river gives way and a cold front passes.###Water will likely pool on roads and in low-lying areas. Some travel delays are possible.Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to BCstorm@ec.gc.ca or post reports on X using #BCStorm.