20 Jul 2023 | 03:05 PM UTC
Canada: Adverse weather forecast in parts of southeastern Ontario and southern Quebec through at least July 22
Severe weather forecast across parts of Ontario and Quebec, Canada, through July 22. Possible transport, business, and utility disruptions.
Event
Severe weather is forecast over parts of southeastern Ontario and southern Quebec through at least July 22. Severe thunderstorms are expected across much of the Ontario Peninsula during the afternoon and evening July 20; heavy downpours, strong winds, large hail, and possible tornadoes may accompany storms. Winds gusting up to 110 kph (68 mph) and heavy downpours of 3-5 cm (1.2-2 inches) are possible during storms. There is a further risk of heavy rainfall and thunderstorms across parts of the affected region through July 22. 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.
Environment Canada has issued severe thunderstorm watches for much of the Ontario Peninsula, with the exception of Toronto and surrounding areas. A special weather statement for heavy rainfall has been issued for parts of Ontario to the north of the severe thunderstorm watch area. Another special weather statement for heavy rainfall and severe thunderstorms July 21-22 is in place across parts of southern Quebec. Officials could update and possibly extend the coverage of weather alerts over the coming hours, including possibly issuing tornado warnings.
The severe weather will likely 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 will likely 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 will likely 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.
Advice
Monitor local media for updated emergency and weather information. Seek updated information on weather and road conditions before driving or routing shipments through areas where severe weather is forecast. Plan accordingly for potential delivery delays if routing shipments by truck through the affected area. Do not attempt to drive through flooded areas. Confirm flights. Charge battery-powered devices in the case of prolonged electricity outages.
