More than 140mm of localized rainfall in some areas of the Parkland, and more than 90mm in most, is definitely out of the ordinary. It's even surprising Environment Canada.
Monday's Rainfall Warning from Environment Canada noted that a large part of this system came up from the Dakotas. Brian Proctor, Meteorologist with Environment Canada, said though southern Manitoba and the Dakotas got hit pretty bad, the convection of their water definitely fed into the severity of the storm that hit the Parkland, and even the storm that hit Winnipeg and caused a lot of property damage.
"We saw an awful lot of very severe convection across southern Manitoba [on Monday] in the evening hours, so Winnipeg got hit with a really significant line of thunderstorms coming through, taking down some garages, things of that nature, a big straight line wind event. But from what we can see from radar and damage, it was a fairly impactful storm as it blew through that area...[Dauphin is] really one of the peak spots from what we've seen, and maybe some communities stretching back to the southern section of the Parkland and extreme west of Manitoba as well," said Proctor.
Looking at the numbers, Monday's storm had more rain than most Parkland communities see in months. Some areas of note include Ste. Rose, seeing 106mm of rain in the last 24 hours, Mossey River, seeing 132mm of rain in the last 24 hours, and Grandview, seeing 115mm in the last 24 hours.
"The majority of the heaviest convections were well south of us, southern portion of the province and into the Dakotas, but we did get a lot of the moisture associated with that rotating up and producing that really heavy rainfall across and area, stretching off to the west...those showers are gonna continue but they're gradually tapering off, we could see some embeded thunderstorms as well, with local downpours associated, but in general terms, gradual drying continuing through the day today, into the overnight tonight, and generally sort of mixed skies for Canada Day and very much drier conditions," said Proctor.
As always, continue to monitor both 730 CKDM and Environment Canada for weather updates.
