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Asia - Pacific


Lions Bay, BC

Alerts in Effect

Rainfall Warning

Issued at 04:23 Saturday 27 November 2021

Heavy rain this weekend.

Total Rainfall: 60 mm over southern sections to 120 mm near the mountains.

Locations: Metro Vancouver - Central, Southeast, Northeast and North Shore, Fraser Valley, Howe Sound, Sea to Sky - Squamish to Whistler, Sunshine Coast - Gibsons to Earls Cove.

Timespan: This morning through Sunday afternoon.

Remarks: Another front will approach the south coast today. Rain will begin this morning for most areas, but the heaviest rain will be tonight as the front nears. Rain will start to ease Sunday afternoon.

Rainfall amounts for this event will vary from about 60 mm from Vancouver to 80 mm in the Fraser Valley to 100 mm closer to the mountains. Squamish may see up to 120 mm. Gibsons will also receive 60 to 80 mm of rain.

For the Sea to Sky highway, precipitation will start as light snow north of Brandywine and transition to heavy rain this afternoon. Total rainfall amounts near 60 mm are expected by Sunday afternoon.

Strong warming will accompany this system causing freezing levels to rise well above the mountain tops today. Snowmelt will contribute to runoff, increasing the risk of flooding and possibly impacting vulnerable landscapes and infrastructure.


Heavy downpours can cause flash floods and water pooling on roads. Localized flooding in low-lying areas is possible.

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

Road conditions are available at

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to or tweet reports using #BCStorm.

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