St. Clair Region Conservation Authority warns of potential flooding as Beryl heads to Ontario

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A satellite image of some of the remants of Hurricane Beryl heading into southern Ontario.

Environment Canada has issued a rainfall warning.

Heavy rainfall associated with the remnants of Hurricane Beryl will affect portions of southern Ontario beginning overnight or Wednesday morning. Although 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.

Rainfall amounts will likely be highly variable across the region, and some areas may receive in excess of 80 mm. Conditions should improve by Thursday.

Because of the rain heading our way, the St. Clair Region Conservation Authority is warning of the potential for flooding. You can read the full alert below.

Highlights:

·         Rainfall totals of 40 to 80mm

·         20 to 40mm per hour at times

·         Water levels will react more quickly with increased runoff

·         Saturated soils, ponding and flooding in floodplain areas

Message: Rainfall with embedded torrential downpours expected

Environment Canada is expecting widespread significant rainfall from post-tropical storm Beryl beginning overnight tonight (July 9) and ending Thursday (July 11). Rainfall totals across the region are predicted to be between 40-80mm with higher amounts locally possible. There is a threat of torrential downpours with rainfall rates of 20-40mm per hour. Due to the potential intensity of the storms, water levels are expected to rise rapidly and produce localized runoff. High amounts of rainfall in a short period of time can lead to pooling on roads and flash flooding.

Water levels are anticipated to be elevated from the rainfall with the potential for minor flooding into natural floodplain areas, parks and fields; major flooding is not anticipated at this time.

Individuals are reminded to avoid watercourses and flooded areas due to dangerous conditions, slippery banks and cold, swift moving water. Children and pets should be kept away from the water.

The Conservation Authority continues to monitor watershed conditions and will issue advisories to municipalities and media should flood issues arise.

Municipal emergency response staff and road superintendents should monitor local conditions closely.

This message will remain in effect until Friday, July 12, 2024 at 12pm unless otherwise updated.

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