Rainfall warning
Significant rainfall expected tonight through Wednesday night.
Showers and thunderstorms are forecast to begin this evening and will continue through at least Wednesday night.
Rainfall amounts of 50 to 60 mm are expected by early Thursday morning with locally higher amounts in excess of 75 mm in areas that receive multiple thunderstorms.
This rainfall is due to a cold front and a moisture laden low pressure system
that will arrive from the American Mid-west.
For information concerning flooding, please consult your local Conservation Authority or Ontario Ministry of Natural Resources and Forestry District office. Visit Ontario.ca/floods for the latest details.
Heavy downpours can cause flash floods and water pooling on roads. If visibility is reduced while driving, turn on your lights and maintain a safe following distance. Localized flooding in low-lying areas is possible.
Rainfall warnings are issued when significant rainfall is expected.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@canada.ca or tweet reports using #ONStorm.
Today – September 21, 2021
Cloudy. 60 percent chance of showers early this morning. 70 percent chance of showers late this afternoon. Risk of a thunderstorm. Wind south 20 km/h increasing to 40 gusting to 60 early this morning. Temperature steady near 22. Humidex 30. UV index 4 or moderate.
Tonight
Showers at times heavy with risk of a thunderstorm. Local amount 30 to 40 mm. Wind south 30 km/h becoming north 40 gusting to 60 after midnight. Low 15.
Wed, 22 Sep – Rain at times heavy. Risk of a thunderstorm late in the afternoon. Amount 20 to 30 mm. Wind north 40 km/h gusting to 60. Temperature steady near 17. UV index 1 or low. Night – Showers. Windy. Low 11.
Thu, 23 Sep – Showers. Windy. High 18. Night – Cloudy periods with 60 percent chance of showers. Low 11.
Fri, 24 Sep – A mix of sun and cloud with 30 percent chance of showers. High 21. Night – Cloudy periods. Low 12.
Sat, 25 Sep – A mix of sun and cloud with 40 percent chance of showers. High 20. Night – Cloudy periods with 40 percent chance of showers. Low 11.
Sun, 26 Sep – A mix of sun and cloud with 30 percent chance of showers. High 22. Night – Cloudy periods. Low 12.
Mon, 27 Sep – A mix of sun and cloud. High 25.
