Canada: Severe weather forecast to continue across southeastern regions through at least Nov. 16 /update 2

Severe weather is forecast to continue across parts of southeastern Canada through at least Nov. 16. A low-pressure system is expected to bring a mix of heavy rainfall and freezing rain to parts of the region over the coming days. Strong winds are also forecast and these could generate rough seas in coastal areas. Flooding is possible in areas where sustained heavy rainfall occurs and hazardous travel conditions are likely in areas impacted by freezing rain due to slippery roads. Strong winds may cause property damage and power outages.

As of early Nov. 15, Environment Canada has issued red rainfall warnings (the highest level on a three-tier scale) across southeastern parts of Newfoundland and red freezing rain warnings for parts of eastern and south-central Labrador, northern and northwestern New Brunswick, and eastern Quebec. Red strong wind warnings are in place for parts of far northern and southwestern Newfoundland and grey special weather statements for rough seas and higher than normal water levels are in place for parts of eastern New Brunswick, eastern Nova Scotia, Prince Edward Island, and Iles-de-la-Madeleine in Quebec. Authorities will likely issue new alerts or update/rescind existing advisories as weather conditions change over the coming hours and days.

Sustained heavy rainfall could trigger flooding in low-lying communities near rivers, streams, and creeks. Urban flooding is also possible in developed areas with easily overwhelmed stormwater drainage systems. Sites downstream from large reservoirs or rivers may be subject to flash flooding after relatively short periods of intense rainfall. Landslides are possible in hilly areas, especially where heavy rain has saturated the soil.

The severe weather could contribute to transport disruptions throughout the region. Floodwaters or ice accumulations may render some bridges or roadways impassable, impacting overland travel in and around affected areas. Ponding on road surfaces and slippery ice could cause hazardous driving conditions on regional highways. Authorities could temporarily close some low-lying routes that become inundated by floodwaters.

Localized business disruptions could occur in flood-hit areas; some businesses might not operate at full capacity because of damage to facilities, possible evacuations, and some employees' inability to reach work sites. Strong winds could also cause power outages.