
Atmospheric river expected along B.C. south coast, main brunt arriving Sunday
CBC
Environment and Climate Change Canada says an atmospheric river will take aim at British Columbia's south coast this weekend as heavy rain continues to batter the north coast.
It says the "main brunt" of the weather system in the Metro Vancouver region will arrive Sunday, with periods of heavy rain.
The weather office says 75 to 125 mm of rain is expected to fall before easing Monday night. An even higher amount of precipitation is possible over the North Shore Mountains.
It says water will likely pool on roads and landslides may occur in "vulnerable areas" such as steep slopes or deforested regions and it warns drivers that delays are possible.
Environment Canada says up to 100 mm of rain is possible along the north coast in the wake of a system that moved through the area.
It says another front system will arrive Sunday, bringing more heavy rain and it's warning residents that utility outages are possible.
B.C.'s Ministry of Water, Land and Resource Stewardship has issued a flood watch along north and west Vancouver Island, Sunshine Coast, Howe Sound and the North Shore Mountains.
It says "prolonged periods of moderate to heavy rain are possible, along with warmer temperatures and additional runoff from rain-on-snow melt."
The ministry says temperatures are expected to rise through the weekend and into next week, with the potential for significant snowmelt on Sunday and Monday, particularly on mid-elevation terrain in those regions.
High streamflow advisories are also in effect for central, eastern and southern Vancouver Island, Haida Gwaii, the Lower Fraser region as well as in the outer coastal areas of the north and central coasts and areas along the south coast not covered by the flood watch.
The ministry says impacts could include road washouts, localized flooding, overbank flow and landslides, and advises people stay away from riverbanks and check road conditions before travelling.
"Extra vigilance is appropriate through the weekend and into Monday, with the expectation that this weather pattern could lead to escalating flood hazard," it says.













