Boulder Mountain - Posby Lake - Chinook Cove

11:58 a.m. PST Tuesday 9 December 2025

Rainfall Warning in effect for:

• Coquihalla Highway - Hope to Merritt

Rain, at times heavy, is expected.

What: Snow changing to heavy rain overnight. 60 to 80 mm of rain on Wednesday.

When: Tonight through Wednesday evening.

Where: Coquihalla Highway - Hope to Merritt

Remarks: An atmospheric river will arrive on the south coast of BC bringing snow to the Coquihalla Highway tonight. Warm air with the system will result in snow changing over to rain overnight. Heavy rain will continue through Wednesday evening before tapering off. The highest rainfall amounts up to 80 mm are expected near Hope.

Snowmelt combined with the rain may result in 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.

Allow extra time for travel.

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.

10:27 a.m. PST Tuesday 9 December 2025

Snowfall Warning in effect for:

• Trans-Canada Highway - Eagle Pass to Rogers Pass

Snowfall with total amounts of 20 to 30 cm is expected.

What:: Snowfall accumulations of 20-30 cm.

When: Tonight and Wednesday.

Where: Trans-Canada Highway from Eagle Pass to Rogers Pass, Yoho Park - Kootenay Park.

Additional information: An intense Pacific frontal system moving across the interior will give snow to the Columbias. Light snow will start this evening and intensify overnight. The snow is expected to continue near the summit through Wednesday night. As snow levels rise, Highway 1 will see snow changing to rain late Wednesday. Total snow accumulations of 20 to 30 cm can be expected near the summit by Wednesday evening.

Roads and walkways may be very difficult to navigate due to accumulating snow. Visibility may be reduced at times.

Weather in the mountains can change suddenly resulting in hazardous driving conditions.

Allow extra time for travel. The site https://shiftintowinter.ca/ reminds drivers to know before you go. Adjust to winter driving behaviour and use winter tires and chains.

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.