开始于: 2026-03-17, 04:53
到: 2026-03-17, 21:01

Prolonged Atmospheric River Event

What: Total rainfall amounts of 90 to 120 mm.

When: Now until Wednesday morning.

Where: - Metro Vancouver-North Shore including West Vancouver and North Vancouver - Metro Vancouver-northeast including Coquiltam and Maple Ridge - Howe Sound

Impacts: -Prolonged heavy rain on snow combined with mountain snow melt could lead to very enhanced responses in river systems and potential for flooding. -Extensive water pooling on roads and washouts may occur. -Enhanced risk of landslides due to saturation of landscapes.

Remarks: An atmospheric river will remain over the B.C. South Coast until Wednesday morning bringing prolonged periods of rain, at times heavy. Rainfall totals will vary, but between 90 to 120 mm can be expected by Wednesday morning.

Additionally, freezing levels will remain between 2000 and 2500 metres through the period. Snowmelt from higher elevations may increase the impacts associated with this rainfall event.

While this atmospheric river will exit the region on Wednesday, another series of storms is expected to impact the Lower Mainland through the rest of the week. Current indications show another intense rainfall event for Thursday night into Friday morning.

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Water will likely pool on roads and in low-lying areas. Some travel delays are possible. Landslides may occur in vulnerable areas such as steep slopes, deforested areas or recent burn scars.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or post reports on X using #BCStorm.