Canada: Adverse weather forecast across southeastern regions through at least early Feb. 25

Heavy rainfall is forecast across parts of southeastern Canada through at least early Feb. 25. Rainfall accumulations of 2.5-10 cm (1-4 inches) are forecast across much of the affected area. The threat of flooding in the region will likely be accentuated by a combination of snowmelt and the reduced ability of frozen ground to obtain rainwater. Strong winds gusting up to 70 kph (43 mph) are also possible across parts of the region. As of Feb. 23, Environment Canada has issued red rainfall warnings (the highest level on a three-tier scale) across parts of western Newfoundland, central and eastern Nova Scotia, and central and eastern Prince Edward Island. Grey special weather statements for heavy rainfall are in place across parts of southwestern and west-central Nova Scotia. Officials may update and extend the coverage of weather alerts 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 or a lack of stormwater drainage systems. Sites located downstream from large reservoirs or rivers may be subject to flash flooding after relatively short periods of intense rainfall. Landslides are possible in hilly or mountainous areas, especially where heavy rain has saturated the soil.

Floodwaters and debris flows may render some bridges, rail networks, 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.

Flooding could block regional rail lines; freight and passenger train delays and cancellations are possible in areas with heavy rainfall and potential track inundation. Severe weather could also trigger flight delays and cancellations at regional airports.

Localized business disruptions may occur in low-lying areas; some businesses might not operate at full capacity because of flood damage to facilities, possible evacuations, and employees' inability to reach work sites. Electricity and telecommunications service disruptions are possible where significant flooding, strong winds, or landslides impact utility networks.