Rain up to 50 millimeters is forecast in Hamilton and a flood warning has been issued along the shore of Lake Ontario.
Environment Canada issued a rain warning at 5:23 a.m. Sunday for Hamilton, warning of heavy rain and some thunderstorms beginning on Sunday afternoon.
Warnings have also been issued for Haldimand-Norfolk and Brant County. Rain reports have been issued for Halton and Niagara, where total precipitation between 30 and 60 millimeters is forecast for Tuesday morning.
When warnings have been issued, total precipitation of up to 50 millimeters is “likely” by Monday evening and precipitation is expected to continue until Tuesday, according to the weather agency.
Localized precipitation totals may be higher in areas with thunderstorms.
The Hamilton Conservation Authority (HCA) released a flood watch on Saturday, warning of “strong winds from the shore” Monday and Tuesday, increasing the risk of flooding and erosion.
Strong northeast winds of up to 40 km / h and gusts of up to 70 km / h are expected to produce waves of up to 2.1 meters.
HCA warns residents along the shoreline to monitor the situation and exercise caution near the lakeside areas.
Flood monitoring is in effect until May 20. The conservation authority will update or cancel the flood monitoring at that time.