Severe Thunderstorms Drench Pembina and Red River Valleys, Triggering Warnings and Power Outages
Today, the Pembina and Red River Valleys are grappling with the aftermath of severe thunderstorms that have left the region drenched and disrupted. This morning, the area is waking up to the impacts of not one, but three intense waves of thunderstorms that hit between Monday afternoon and early Tuesday.
Starting in the mid-afternoon on Monday, the first batch of storms rolled through, bringing significant rainfall. This was followed by another round of storms early in the evening, and a final, powerful wave that rumbled through between 1:30 and 3:30 a.m. This relentless series of storms was triggered by a warm front pushing northward from North Dakota, which acted as a catalyst for these severe weather conditions.
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According to CMOS Accredited Weathercaster Chris Sumner, the storm system's movement was closely tied to this warm front. The front's slow northward progression allowed the storms to linger and drop substantial amounts of rain. Sumner pointed out that such severe weather in mid to late September is atypical because the atmospheric conditions usually don't align to produce such intense storms at this time of year. However, the influx of warm, moist air combined with the slow-moving warm front created a perfect storm scenario.
The severe weather also led to Tornado Warnings for several areas including the R.M.s of Hanover, La Broquerie, Ste. Anne, and Reynolds. These warnings were issued based on Doppler RADAR imagery showing rotation in one of the storm cells. In response to the severe conditions, Manitoba Hydro is currently dealing with widespread power outages affecting over 2,500 customers across the Red River Valley. Areas like St. Jean, Morris, and Rosenort are among those experiencing significant outages.
The rainfall totals have been staggering. Reports from Monday through early Tuesday show that Plum Coulee received 138mm (5.52 inches) of rain, Winkler 131.1mm (5.25 inches), and Arnaud 130mm (5.12 inches). Other notable amounts include Horndean with 125mm (5 inches) and Schanzenfeld between 125 and 135mm (5 to 5.31 inches). These figures reflect the sheer volume of water that fell, leading to potential flooding and further disruptions.
Looking ahead, today is expected to be warm and humid with temperatures around 25°C, but it will feel closer to 33°C due to the humidity. The weather will remain unsettled with chances of additional showers starting Wednesday night and continuing into the weekend. As the week progresses, temperatures are anticipated to trend downward, with conditions returning to seasonal norms by the start of next week.
Stay tuned for further updates and ensure you’re prepared for any additional weather changes. For now, the focus remains on recovery and assessing the damage caused by these unprecedented September storms.
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