Temperatures could plummet, clouds could roll in, and the rain could pour in Calgary in the coming days.
Environment and Climate Change Canada (ECCC) has issued a special weather statement for the city, warning of heavy precipitation and strong winds this weekend.
“Our forecast models are in agreement, a lot of rain is on the way; 80 to 100 millimeters is expected to fall in a 48-hour-window starting Friday,” explained 660 NewsRadio meteorologist, Kevin Stanfield.
He says the city could also see 50 to 60 km/h winds.
Despite the forecast for a downpour, as of Thursday, severe hail isn’t looking like a strong possibility.
The rain could actually provide some much-needed support to parts of southern Alberta, according to Marianna Greenhough with Environment and Climate Change Canada.
“In a lot of ways this rain is going to be somewhat welcome because it’s going to help replenish those reservoirs that are definitely a little low,” she said. “It’s a pretty significant event, so it’s definitely important to be prepared and be aware of what’s going on around you.”
The provincial drought map shows much of southeast and southwest Alberta under a severe drought.
Despite a need for moisture, this incoming system could be more that what people bargained for; upwards of seven inches could fall by Sunday south of Calgary, according to some weather models.
The Bow and Elbow Rivers could also swell this weekend, but the city isn’t expecting an flooding, thanks to all of its mitigation efforts.
Still, Calgarians should exercise caution and remain safe around the river.
Here are some tips from the city:
- Exercise caution around riverbanks as fast-moving water can cause erosion and destabilization.
- Warn children about the dangers of fast-moving water, especially those who live near rivers.
- Keep off temporarily closed pathways and away from any low-lying flooded areas near the river, for safety.
- Check for a boating advisory before going on the river and stay off the river if there is an advisory in place. Visit calgary.ca/riversafety for more information.
- Keep pets away from fast-moving water.
- Remove lawn furniture and other portable items off the riverbank.
- Secure items on your property in case of high winds or hail.
- Direct eavestroughs and extensions onto landscaped areas at least 1.5 metres (5 feet) away from your home and your neighbours’ home.
For the safety of pathway users, the city says it may temporarily close some pathways dur to high flow rates on the Bow and Elbow.
In preparation for the rain, the city will be releasing some water downstream from the Glenmore Reservoir to make room.
“While precipitation is welcome due to recent dry conditions, the intensity and widespread nature of the expected rain is prompting precautionary action,” said Frank Frigo, Manager of Environmental Management for The City of Calgary. “Calgarians will notice water levels in the Glenmore Reservoir decreasing and flows in the Bow and Elbow River increasing. Although significant river flooding is not expected in Calgary, we are preparing for higher than forecasted conditions.”
High streamflow and rainfall advisories may be issued by the Provincial River Forecast Centre and Environment Canada in the coming days, the city adds.
Reporting pooled water on streets
The city says it has special devices in storm drains that allow the water to drain slowly and not overload the stormwater system.
If Calgarians see water pooling around storm drains, they should wait 90 mins and if it’s still not draining, take a photo and submit it via the 311 app or online request. The city says this will help crews respond on a priority basis.