A set of powerful storms that could rank among the strongest in decades will slam British Columbia, thepacific north-west, and northern California this week, with torrents of rain, inches of snow in high altitudes and damaging winds. The region is bracing for widespread power outages and flash flooding, with extreme rainfall that could linger until the weekend.
After a relatively mild autumn, these rains are part of a familiar pattern caused by atmospheric rivers – strong storm systems that can bring both relief and ruin.
This week’s weather event is predicted to be the strongest atmospheric river the regions have seen this season. Heavy rainfall started Tuesday evening with the worst of the event unfolding throughout the rest of the week, causing “life threatening” conditions, according to the weather prediction center for the National Oceanic and Atmospheric Association (Noaa).