A low pressure system with a cold front moving through Ontario today is forecasted to create conditions favourable for thunderstorms in the region, bringing an estimated 5-15 mm rain and strong winds. High amounts of rainfall in a short period of time can lead to increased runoff and flash flooding, particularly in urban areas. Rainfall amounts may vary depending on location.

Winds from the south this morning are anticipated to become westerly early this afternoon, gusting upwards of 50 km/h over Lake St. Clair mid-day and continuing through the evening and overnight, subsiding Wednesday morning. Strong southerly and westerly winds in this region have the potential to cause a backwater effect in the Wallaceburg area, further contributing to elevated water levels. Residents along the shoreline may experience wind-driven high water levels and wave action, with a potential for erosion.

Westerly winds gusting upwards of 50 km/h are also anticipated on Lake Huron, with waves building throughout the day reaching two metres overnight before subsiding Wednesday afternoon. The Lake Huron shoreline can anticipate sustained wind action and possible erosion, particularly the Old Lakeshore Road area of Brights Grove.

River banks and shorelines are expected to be slippery, with possible minor erosion. Residents are reminded to avoid watercourses and flooded areas due to 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 Thursday, June 25, 2020, unless otherwise updated.