Canada: Severe weather forecast for parts of eastern Newfoundland Island through Nov. 14

Severe weather is forecast to continue across parts of eastern Newfoundland Island through at least Nov. 14. Heavy downpours may cause localized flooding in low-lying areas, flash floods, and water pooling on roads. Strong winds may cause power outages and property damage. Environment Canada is maintaining red rainfall warnings (the highest level on a three-tier scale) across the Avalon Peninsula; rainfall of 6-8 cm (2.5-3 inches) is forecast. Rain is expected to begin over the Avalon Peninsula late Nov. 11 and continue through Nov. 14. Some areas may see a brief break in the rain Nov. 12, before it resumes the evening of Nov. 12. The heaviest rainfall is expected from late Nov. 12 through the afternoon of Nov. 14. Authorities will likely issue new alerts or update/rescind existing advisories as weather conditions change over the coming hours.

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 and debris flows may render some bridges or roadways impassable, impacting overland travel in and around affected areas. Ponding on road surfaces 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.