The windstorm that hit B.C.’s South Coast on December 20 was the most damaging storm BC Hydro has experienced. It resulted in more than 750,000 customers without power and thousands of damaged pieces of equipment. It was larger than the August 2015 windstorm that hit the Lower Mainland and Fraser Valley, or the 2006 windstorm that devastated Stanley Park. The windstorm was preceded by several heavy rain events, which saturated the ground and reduced the stability of trees.
Here’s an excerpt from this article from the Salt Spring Exchange:
BC Hydro released a report in November 2018 that found storms and extreme weather events in B.C. are becoming more frequent and severe. In the past five years, the number of individual storm events BC Hydro has responded to has tripled. The December windstorm is another indicator that this trend is not slowing down, and the frequency and severity of the storms are now increasing. For example, this storm generated more than twice the number of storm-related outages than BC Hydro experienced in all of 2013.