Residents in Aurora should prepare for wet weather this weekend, as Environment Canada has issued a special weather statement warning of heavy rain throughout Saturday, April 4, 2026.
A weather system known as a Colorado low is expected to bring between 25 and 50 mm of rain to the area. While the rain is set to arrive on Saturday, meteorologists anticipate the heaviest downpours will occur during Saturday evening and overnight. There is also a possibility of thunderstorms, which could lead to higher rainfall totals in some areas. Because of the uncertainty regarding exactly where the storm will be strongest, the federal weather agency noted that additional rainfall warnings may be issued as the system moves in.
The Toronto and Region Conservation Authority is monitoring the situation closely. Although water levels in local rivers and the Lake Ontario shoreline remain normal for this time of year, officials warn that spring conditions elevate the risk of flooding. The ground is currently frozen, which limits how much water can be absorbed into the soil. Furthermore, the existing snowpack is holding more water than it did last year, meaning heavy rainfall will likely increase runoff and cause water levels in local streams and rivers to rise.
To support municipal partners, the conservation authority runs a Flood Forecasting and Warning Program that operates 24 hours a day, seven days a week. Officials advise residents to avoid low-lying areas that are prone to flooding and to keep a close watch on official weather alerts.
For more information on flooding, residents can consult their local conservation authority or visit Ontario.ca/floods. If you spot severe weather, you are encouraged to report it to Environment Canada by emailing [email protected] or by posting on X using the hashtag #ONStorm.
