Rain, at times heavy, is expected.What:Snow changing to heavy rain early this morning. Total rainfall of 60 to 80 mm by early Thursday morning.When:Now through tonight.Where:Coquihalla Highway – Hope to Merritt.Remarks:An atmospheric river will arrive on the South Coast of B.C., bringing snow to the Coquihalla Summit. Warm air associated with the system will cause the snow to change to rain early this morning. Heavy rain will then persist through tonight before tapering off early Thursday morning. The highest rainfall amounts, up to 80 mm, are expected near Hope.Snow levels will lower to near the summit tonight, and rain may change back to snow near the summit with up to 10 cm of accumulation possible.Snowmelt combined with heavy rain may lead to high streamflows and localized flooding.###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 BCstorm@ec.gc.ca or post reports on X using #BCStorm.For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.