Canada: Adverse weather forecast across parts of eastern Ontario and western Quebec June 13 /update 1

Severe weather is forecast over parts of eastern Ontario and western Quebec June 13. Environment Canada has warned that conditions are favorable for the development of dangerous thunderstorms capable of producing very strong wind gusts, heavy rainfall, damaging hail, and possible tornadoes in the region during the afternoon and evening June 13. Heavy downpours could trigger flooding in low-lying areas, and strong winds could cause property damage and power outages. Authorities have warned people in the affected area to take cover if threatening weather approaches.

As of June 13, Environment Canada has issued yellow tornado and severe thunderstorm watches (the middle level on a three-tier scale) across the affected area. Officials will likely issue further weather alerts, including possible tornado warnings, in the region over the coming hours.

The severe weather could contribute to transport disruptions throughout the region. 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.

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

Localized business disruptions could occur in flood- or tornado-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.