Sunday, June 7th 2020, 6:21 pm - Parts of Alberta and Saskatchewan will continue to get drenching rains Sunday, which may cause localized flooding, while the threat for severe weather moves into southern Manitoba and northwestern Ontario.
The weekend will end on a stormy and wet note across the Prairies, with Alberta and Saskatchewan continuing to get soaking rains and thunderstorms Sunday. Additional rainfall totals in parts of both provinces may reach 40 mm through Monday, leading to a risk of localized flooding. Rainfall warnings are in place for the aforementioned provinces. Details and timing, below.
Visit our Complete Guide to Summer 2020 for an in-depth look at the Summer Forecast, tips to plan for it and much more
- Montana low brings potential for additional severe thunderstorms on Sunday in Manitoba, northwestern Ontario
- 30-50 mm of rain possible in southeastern Manitoba through Monday
- Severe storm threat continues Monday in Manitoba
- Keep on top of weather ALERTS in your area
SUNDAY: HEAVY RAIN, FLOODING THREAT, STORM POTENTIAL MOVES EAST
The Prairie provinces will see widespread rain persist on Sunday. As the low continues to push through, the heaviest rains shift into central and northern Alberta, as do the thunderstorms. Southern Saskatchewan may see isolated storms fire up.
A flood warning was issued for Lac La Biche County by Alberta Emergency Alert on Sunday afternoon. The high rainfall could cause sewer backups and basement flooding.
Residents of Lac La Biche are asked to avoid all non-essential water use until further notice. "If you have a basement, we advise you to move valuables and essential items to safer areas of your home," the alert states.
While wind warnings have been dropped in southern Saskatchewan, conditions are still expected to be gusty Sunday afternoon, reaching 50-60 km/h at their peaks before dying down in the evening.
Additional rainfall amounts through Monday will be heaviest in southeastern Manitoba, where 30-50 mm is expected due to the likelihood of thunderstorms, possibly severe. Parts of central Saskatchewan and northern Alberta may get 40 mm of additional rainfall during the same time period, locally higher amounts in thunderstorms.
The rainfall warnings in place in Alberta and Saskatchewan warn people to watch out for possible washouts near rivers, creeks and culverts.
"Heavy rainfall in combination with other weather factors, such as hail, wind and lightning will make outdoor activities unsafe," warns Environment Canada.
MONDAY AND BEYOND: SEVERE STORM RISK CONTINUES, FOLLOWED BY COOLER TEMPERATURES
On Monday, a second stateside system will track into Manitoba and northwestern Ontario with threats again for severe weather. The risk area for severe thunderstorms will shift into northwestern Ontario mostly, but extreme southeastern Manitoba could also see them.
The main threats, similar to Sunday's storm potential, will be large hail, heavy rain and strong wind gusts. One or two tornadoes is also a possibility.
"There will be a large range in temperatures across the region Sunday and Monday... with high temperatures climbing into the lower 30s across southern Manitoba while central and northern Alberta (including Edmonton) struggle to reach double digits," Weather Network meteorologist Dr. Doug Gillham says.
Cooler weather spreads east for the middle and end of next week. Unsettled at times, but not as wet for a few days. Pattern becomes more unsettled again next weekend.
Stay tuned to The Weather Network as we continue to monitor the forecast.