Rainfall Warning Issued for British Columbia's Central Coast as Atmospheric River Approaches

Alert Details

Environment Canada has issued a yellow rainfall warning for the coastal sections of the Central Coast. The alert is triggered by an approaching atmospheric river expected to bring heavy precipitation and significant snow melt to the region.

Affected Areas

The warning specifically covers the coastal sections of the Central Coast region in British Columbia.

What You Should Do

Residents are advised to monitor local alerts and forecasts issued by Environment Canada. The agency warns that fast-moving and rapidly rising water can sweep vehicles away and damage infrastructure. Residents should be aware that water will likely pool on roads and in low-lying areas, and some property damage is possible. Landslides may occur in vulnerable areas such as steep slopes, deforested areas, or recent burn scars. Severe weather can be reported via email to BCstorm@ec.gc.ca or on X using #BCStorm.

Expected Conditions

Total rainfall amounts are expected to reach between 100 to 150 mm, with some local areas potentially exceeding 150 mm by Tuesday morning. An atmospheric river making landfall will cause snow levels to rise sharply, peaking at 2,500 metres on Monday morning. The combination of prolonged heavy rain on snow and mountain snow melt will lead to very enhanced responses in river systems and the potential for flooding. Additional impacts include extensive water pooling on roads, wash-outs, and an enhanced risk of landslides due to landscape saturation.

Timeline

The weather event begins with wet snow Sunday morning, changing to rain Sunday afternoon and intensifying Sunday night. The heaviest rain is expected from Sunday night through Tuesday morning. While rain will continue on Tuesday, it is expected to be less intense than Monday’s peak. Snow levels are forecast to fall back to 500 metres on Tuesday.