Flood advisories in effect for areas in eastern Ontario

Remnants of tropical storm Debby merging with another low pressure system over the Great Lakes could bring up to 100 millimetres of rain to parts of Eastern Canada on Friday. A person holding an umbrella crosses Wellington Street as rain falls in Ottawa, Friday, Aug. 9, 2024. THE CANADIAN PRESS/Justin Tang

A flood watch advisory has been issued for areas along the Lower Ottawa River, Arnprior to Hawkesbury. It will be in effect from Saturday till Monday.

According to the Ministry of Natural Resources’ website, a risk of flood warning is in effect for Renfrew and Pembroke.

The Ottawa River Regulation Planning Board (ORRPB) said in a news release Friday, depending on the amount of rain the region receives, water levels and flows could exceed minor flood thresholds in some areas along the Lower Ottawa River beginning Saturday.

“Water levels and flows have been gradually increasing along the main stem of the Ottawa River. Levels and flows are expected to increase over the next week due to forecasted rainfall Friday into Saturday, combined with increased spring runoff from snow melt in the northern region of the Ottawa River Basin,” reads the release.

Likely, minor flood levels will be exceeded starting Saturday with major flood levels being exceeded in some locations From Pembroke to Britannia Monday to Friday, warns the ORRPB.

Meanwhile, “from Gatineau (Hull Marina) to Hawkesbury, minor flood levels will likely be exceeded starting Monday to Tuesday, with peak levels likely exceeding minor flood levels Thursday to Friday and expected to remain below major flood levels.”

On the main stem of the Ottawa River, water levels are anticipated to remain well below historical flood levels, says the ORRPB.

More information about flood warnings across the province is available here.

Weather forecast

This Saturday is going to be rainy in Ottawa with 5 to 10 millimetres of rain in the forecast.

Ottawa received 2.9 mm of rain as of 3 p.m., according to Environment Canada. In Permbroke, an amount of 7.6 mm has been recorded.

Environment Canada calls for a high of 13 C, cloudy skies, a 40 per cent chance of showers early in the morning and fog patches dissipating this morning.

The capital will see a high of 4 C and 10 to 15 mm of rain tonight.

Sunday, a high of 17 C and a 30 per cent chance of showers are expected. A low of 5 C and clear skies are anticipated overnight.

Sunny skies and a high of 20 C are forecasted for Monday. A low of 8 C and cloudy periods are expected for the night.

The average temperatures for this time of year are a high of 15 C and a low of 4 C.