Environment Canada issued a special weather statement and flood advisories for the Greater Toronto Area after a low-pressure system moved into southern Ontario [1].
The weather system poses a risk of localized flooding and travel disruptions across Toronto and parts of southern Ontario along Lake Ontario [2].
Forecasters expect rain to begin Saturday morning with initial amounts between 10 and 20 millimetres [3]. However, the intensity of the system may lead to higher totals as the weekend progresses. Some estimates suggest that rainfall totals could reach between 30 and 50 millimetres over the course of the weekend [4].
Specifically, the city of Toronto could see up to 50 millimetres of rain on Saturday alone [3]. The agency's warnings emphasize that the rough weather is expected to linger for another day, increasing the likelihood of water accumulation in urban areas [5].
Residents are advised to monitor local weather updates and prepare for potential flooding in low-lying areas. The special weather statement remains in effect as the low-pressure system continues to impact the region [1].
“Toronto could see up to 50 mm of rain on Saturday”
The convergence of a low-pressure system with high precipitation totals in a densely populated urban center like Toronto often leads to overwhelmed storm drainage systems. When rainfall reaches 50 mm in a short window, the risk of flash flooding increases, which can disrupt public transit and cause significant property damage in flood-prone zones.
