The first rains came in Friday evening for the RRV but were not overly significant. More importantly, slow-moving and training thunderstorms around and north-northeast of Winnipeg Saturday afternoon dumped some impressive rainfall totals. Locally 20+ mm of rain fell with these storms. Additional rains fell in the evening and overnight with, once again, locally 20+ mm. A Colorado Low moving north brought us our drencher of an afternoon yesterday with an additional 30-50 mm in the northern RRV.
3-day rainfall totals were quite impressive with highest amounts through the RRV. Thanks to Saturday's thunderstorms, over 100 mm of rain fell in total north of the city in the Lockport area. In Winnipeg, generally 65-80 mm fell. With 69.7 mm of rain at the airport, it was the most significant rain event since the biblical rains of late May 2010 when 80.0 mm fell May 28-29. In addition, with 40.1 mm yesterday alone, we obliterated the old rainfall record of 18.3 mm in 1928 for June 15.
Here's a map of rainfall totals across southern Manitoba from Friday through to Monday morning:
As for the remainder of this week, we've got a break in the rain until Wednesday. Today, with a mix of sun and cloud we should manage to reach about 21°C. Similar day tomorrow, reaching 21-22°C.
Wednesday is when things get interesting. Warmer weather will be returning with highs of 26-28°C expected in Winnipeg. Depending on how things go, thunderstorms may be possible Wednesday night. However, there remains great uncertainty about the system. As a result, stay tuned to the comments below for updates in the next couple days. Note that a severe thunderstorm event is possible in extreme southwestern Manitoba with this late Wednesday.