Showers will be the story of the day in Winnipeg as an upper trough swings into the RRV today. A band of showers will push in this morning and entrench itself as a low pressure system pushing northwards out of the United States reinforces the area of rain parked over the Red River Valley.
An upper low has pushed into Alberta, drenching the province in rain and snow, with some areas expecting 30-40mm of rain while some regions in the Foothills are getting 10-20cm of snow. For us here in Manitoba, a band of rain running along a line from Dauphin to Grenta to Grand Forks will push over the entirety of the Red River Valley and stall out. In Winnipeg, we’ll get up to around 10°C today with a blustery southeast wind. Showers will slowly weaken in the afternoon before reintensifying as a low pressure system lifts northwards out of North Dakota in the evening. Precipitation will blossom as the entire system spins up and strengthens with cooler air beginning to slump southwards across the Prairies on the backside of the main surface low.
The showers will clear out from Winnipeg on Saturday morning leaving us with a mix of sun and cloud and a daytime high around 12°C. Things cloud up again on Saturday evening as band of scattered showers pushes southwards along the cold front. We’ll be left with sunny skies on Sunday with a high near 10°C.
Total rainfall through the next few days will vary depending on exactly how much convection ends up embedded within the rain, and we’ll only be able to tell that as things develop. In general, though, the following are the expected amounts:
- Winnipeg: 10-15mm
- Altona: 10-20mm
- Emerson: 10-20mm
- Morris: 10-15mm
- Steinbach: 10-15mm
- Winkler: 15-25mm
Areas in Southwestern Manitoba, including Brandon, Pilot Mound, Melita and Virden will see greater amounts than locations in the RRV, with general accumulations around 1”. As usual, we’ll have updates in the comments below!
