Environment Canada has issued a rainfall warning covering much of southern Ontario due to the remnants of Hurricane Beryl.
The warning warns of rainfall totals of 40 to 60 mm in Hamilton, with higher amounts possible in some areas.
Rain is expected to begin late Tuesday or Wednesday, falling at a rate of 20 to 40 mm per hour at times, and may continue into Thursday before conditions improve, the warning says.
“Although confidence in the exact track of the weather system remains somewhat uncertain, these type of systems in the past have given very high rainfall rates in torrential downpours,” the warning said.
Hurricane Beryl made landfall first in Jamaica, along with Grenada. It then went to Mexico as a Category 2 hurricane last week, before weakening as a tropical storm as it moved over to Texas, where it’s caused tornadoes and flooding.
This week’s rainfall warning is also in effect for Burlington and Brantford.
A special weather statement for Niagara Falls states the area is being monitored for potential warnings, but adds that “areas near eastern Lake Erie may have breaks in the precipitation, which would reduce rainfall amounts.”
Conservation Halton said widespread flooding is not anticipated, but fast-flowing water and flooding of low-lying areas, natural floodplains and areas with poor drainage may be expected.
The rainfall warning comes as Hamilton and the surrounding region have been under a heat warning that has been in place since Monday, with projected daytime highs of 31 C. The heat wave is expected to end Tuesday night as cooler air mass is expected to arrive.