A long episode of rain, at times heavy, is expected.What:Storm total of 50 to 75 mm of rain.When:Now to Friday.Where:Whistler, Pemberton, Sea-to-Sky HighwayImpacts:- Prolonged heavy rain on snow combined with mountain snow melt could lead to very enhanced responses in river systems and the potential for flooding.- Extensive water pooling on roads and washouts possible.- Enhanced risk of landslides due to saturation of the ground. Additional information:An atmospheric river will remain over the South Coast of B.C. through Friday. With freezing levels near 1500 to 2500 metres, snowmelt from higher elevations may increase the impacts associated with this rainfall event. The heaviest rainfall is expected tonight into Friday morning.Heavy rain will begin to taper off midday Friday as a cold front sweeps across the Lower Mainland. Freezing levels will also lower to 500 to 1000 metres by Saturday.###Water will likely pool on roads and in low-lying areas. Some travel delays are possible.Weather in the mountains can change suddenly resulting in hazardous driving conditions.Road conditions are available at https://www.drivebc.ca/.Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to BCstormec.gc.ca or post reports on X using #BCStorm.