The pattern on the Prairies is quite the opposite of what it was experiencing earlier this summer with extreme heat and no rain in sight amid a worsening drought. Temperatures are now on the cool side, fall-like even in some areas, and there have been multiple rounds of rain since Friday -- a major boost for the drought conditions. With two low-pressure systems moving in Sunday, another 30-50 mm of rainfall is expected for the Prairies through Monday, with 75+mm possible in parts of Alberta due to thunderstorms. More the cool, unsettled pattern in the next few days, below.
SUNDAY: SOAKING DRAWS TO A CLOSE, BUT NOT THE END OF THE RAINFALL
Numerous communities in Manitoba were soaked with 100 mm of rain Friday, which helped put a significant dent in the precipitation deficit. More precipitation is expected in the province Sunday, but not nearly as much rainfall as with the previous system.
In fact, two low-pressure systems will be moving across the Prairies Sunday. The western Prairies will feature a system moving in from northern B.C., while Manitoba will see a low pushing in from stateside, then trekking into northwestern Ontario in the evening hours.
The lows will bring 30-50 mm of rainfall to the region through Monday. The highest rainfall amounts will in central Alberta, where some could see as much as 75+ mm of rain, with higher amounts locally in thunderstorms.
The threat for storms will be mostly present in the aforementioned province, with the chance spread across parts of central and southern Alberta including Calgary. Any that spark up should remain non-severe, however, but may bring heavy rainfall and strong wind gusts.
Extreme southern Manitoba may also see non-severe storms develop Sunday afternoon and evening, but it is a slight risk.
As the jet stream continues to track southward on the western Prairies, cool, Arctic air continues to flush into the region.
Sunday will be quite similar to Saturday temperature-wise, with widespread daytime highs into the mid- and upper teens across central and northern Prairies. The extreme southern areas of Alberta may see considerably warmer temperatures, however, reaching into the mid-20s.
LOOK AHEAD: COOL PATTERN STAYS INTACT, HIGH-ELEVATION SNOW POSSIBLE
Temperatures on the Prairies will drop to 5°C to 10°C below seasonal through Monday, and will be more reflective fall than summer.
With those cooler temperatures, we'll be keeping an eye on snow for the northern Rockies from Sunday into Monday night -- stretching from northern B.C. into the northern foothills in Alberta.
Additional unsettled weather is possible late week.
Check back for the latest conditions across the eastern Prairies.