Wednesday, November 20, 2024

Fierce winds, heavy rain continue in B.C. as bomb cyclone sweeps through region

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An exceptional, rapidly intensifying storm caused closures and power outages on Tuesday. Expect a continuation of wind and alpine snow impacts to spill into Wednesday.

Despite the considerable effects, the storm is not coming ashore, so folks won’t be getting the full brunt of the bomb cyclone. However, regions inland will certainly be feeling some of the wrath. Numerous alerts are in place, including wind warnings, special weather statements and weather advisories.

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Damaging wind gusts are anticipated into Wednesday, so there is a high likelihood of more power outages and travel disruptions. On Tuesday, BC Ferries cancelled the evening’s sailings between the Lower Mainland and Vancouver Island in anticipation of the storm. There is likely to be more interruptions on Wednesday.

Plan accordingly, especially when it comes to travel, and secure loose outdoor objects, and ensure your devices are charged, as well.

Heavy precipitation is also possible for some locations. In fact, some alpine locations could see more than 100 cm of snow by the end of Wednesday.

Bomb cyclone develops offshore

A strong jet stream aloft and sharp temperature differences worked together to rapidly intensify a low-pressure system off the B.C. coast. The minimum central pressure within this low could see an approximate 55-hPA drop in 24 hours.

What is a weather bomb explainer

What is a weather bomb explainer

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This would double the criteria for bombogenesis, the formal name for the rapid intensification that leads to a bomb cyclone.

A bomb cyclone is different from other storms because the dynamics within a rapidly intensifying storm can create ripping winds and extreme precipitation rates.

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Wednesday: Brace for outages, travel disruptions as winds continue to be strong

Gusty winds will continue throughout Wednesday morning for Vancouver Island and parts of the lower Mainland.

Gusts will generally peak at around 90-100 km/h.

B.C. peak wind gustsB.C. peak wind gusts

B.C. peak wind gusts

What makes this even more interesting is how strong the winds will be for the east side of Vancouver Island from Nanaimo to Campbell River. Winds will be blowing from the southeast, but also paired with outflow winds for the mainland that will push those winds farther onshore than normal.

With the high pressure to the north, this will cause outflow winds in the north, as well, a bit early in the season for such a setup.

In addition to the winds, all local ski resorts are in line for copious amounts of snow.

Mt. Washington continues to see heavy snowfall on Wednesday, where totals could exceed the 100 cm mark.

RELATED: How a monster is born: Discover the fuse that lights a bomb cyclone

West coast power outage map Nov. 20West coast power outage map Nov. 20

West coast power outage map Nov. 20

Widespread power outages are possible as a result of the high winds. Make sure you’re prepared in case the electricity goes out in your area.

Maximum wind gusts forecast:

  • Campbell River: 70-90 km/h

  • Comox: 90-100 km/h

  • Tofino: 90-100 km/h

  • Nanaimo: 70-90 km/h

  • Downtown Victoria: 70-90 km/h

  • Vancouver International Airport: 60-70 km/h

  • Delta: 70 km/h

  • Abbotsford: 60-70 km/h

B.C. rainfall forecast through ThursdayB.C. rainfall forecast through Thursday

B.C. rainfall forecast through Thursday

Rainfall continues Wednesday where over 100 mm is expected for Tofino and western Vancouver Island for the entirety of the system.

Storm surge flooding may also be a concern for some locations. We’re just coming off a king tide cycle on Tuesday and Wednesday, so tides will be elevated right as the storm peaks. Some coastal inundation is possible Wednesday morning around communities like Victoria and Campbell River.

Stay with The Weather Network for all the latest on conditions across B.C.

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