Environment and Climate Change Canada (ECCC) has issued a coastal flooding statement for parts of Metro Vancouver.
This follows a rainfall warning that was issued yesterday, which was reissued this morning, with 40 to 60 mm of rain expected to fall until late this afternoon.
The coastal flooding statement is due in part to a frontal system that’s moving across the South Coast of B.C. around noon today. The coastal flooding statement was issued for coastlines along Metro Vancouver from West Vancouver to Tsawwassen, including Vancouver.
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According to ECCC, elevated ocean water levels combined with significant winds and waves are expected today and could exceed the highest astronomical tide.
ECCC says that strong northwest winds will develop behind the frontal system late this morning over the southern areas of the Strait of Georgia.
“The timing of the strong winds with high tide will result in a potential storm surge with water levels higher than the highest astronomical tide.”
In terms of potential risk, ECCC says that minor coastal flooding is possible along exposed shorelines, “especially in low-lying areas.” This could make roads and walkways difficult to navigate, thanks to potential flooding and/or debris like wood and rocks.
“Coastal erosion is possible in sensitive areas such as tidal flats, estuaries, dunes, beaches, and barrier islands.”
The statement is in effect from late this morning to early this afternoon.
There’s also an additional rainfall warning in effect for the Sea to Sky Highway if you’re travelling between Squamish and Whistler. The warning calls for up to 50 mm of rain with higher amounts possible. The warning is expected to last until this afternoon. The Sea to Sky Highway rainfall warning is also thanks to the frontal system moving over the South Coast.
ECCC warns drivers to watch for washouts near rivers, reeks and culverts as weather in the mountains can change suddenly, resulting in hazardous driving conditions.