Moisture-fed low keeps B.C. soaked, brings potentially damaging winds

Digital Writers
·3 min read
Moisture-fed low keeps B.C. soaked, brings potentially damaging winds
Moisture-fed low keeps B.C. soaked, brings potentially damaging winds
Moisture-fed low keeps B.C. soaked, brings potentially damaging winds

The parade of systems marching onto the B.C. coast will continue Wednesday, as another potent low is set to move onshore in the afternoon. Accumulative rainfall totals from it and the previous low could hit 100-150 mm for western Vancouver Island and up to 75 mm in Fraser Valley. Along with the rain will be strong, potentially damaging winds, with gusts reaching as high as 100 km/h locally, for Fraser Valley and exposed coastal areas. Sunshine will return to southern B.C. late week, however, but will come with much cooler temperatures. A closer look at rainfall totals, potentially damaging winds, and the late-week drying out period, below.


  • Rain tapers off overnight, but another pulse of heavy rain moves in Wednesday afternoon

  • 100-150 mm of rain through Wednesday for western Vancouver Island; up to 75 mm in Fraser Valley

  • Potentially damaging winds of 80 km/h Wednesday, with locally higher gusts of up to 100 km/h


While rain tapers off to showers in the overnight, with some breaks, more unsettled weather is on the way Wednesday, with the next potent low expected to move onshore in the afternoon.

Most of the rainfall warnings have dropped, but it remains in effect in Fraser Valley. However, precipitation in the aforementioned region is expected to ease overnight.

Through Wednesday, accumulative rainfall totals will reach 100-150 mm in western Vancouver Island, 40-60 mm for Metro Vancouver and upwards of 75 mm in the Fraser Valley.


The low is also expected to bring strong, potentially damaging, winds exceeding 80 km/h for Fraser Valley and across exposed coastal regions along the West Coast and Vancouver Island. Locally, winds may reach 90-100 km/h.

On the back side of the system, freezing levels will drop considerably for Thursday and Friday, bringing high-elevation snow, but not much is expected for the highway passes.

Temperatures will rise somewhat for the Lower Mainland Wednesday, even slightly above seasonal in some areas, with daytime highs into the mid-teens. The South Coast will see similar temperatures while the Interior will be a few degrees cooler.

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After a mild start to the week, temperatures will drop to below seasonal values late week and the chilly weather will continue through the weekend and into early next week. However, a few days of sunshine for is expected southern B.C., including Vancouver and Victoria, for Friday and the weekend.


The next system is expected to track down the B.C. coast early next week and impact the South Coast Monday night and Tuesday while very cold air is still in place.

This will allow for a considerable drop in freezing levels, which will bring the potential for some mixing into the lower elevations, possibly into the more populated areas.

Check back as we continue to monitor the approach of this system.