Updated at 5:10 a.m. Tuesday, September 17th - all Severe Thunderstorm Watches have ended in the Pembina and Red River Valleys
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Updated at 7:27 p.m. Monday, September 16th - Environment Canada has ended all Severe Thunderstorm Warnings in the Pembina and Red River Valleys. A Severe Thunderstorm Watch continues for the regions, though, with the possibility of additional storms developing Monday night.
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Updated at 5:55 p.m. Monday, September 16th - Environment Canada has reissued Severe Thunderstorm Warnings for the R.M of Stanley and Rhineland Municipality including Morden, Winkler, Plum Coulee and Altona.
"At 5:27 PM CDT Doppler RADAR indicated that this line of severe thunderstorms stretched from south of Morden to Plum Coulee and was nearly stationary," stated the Warning from the forecaster.
Excess rainfall was identified as the main concern with this latest round of severe thunderstorms.
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Updated at 3:55 p.m. Monday, September 16th - According to Environment Canada Severe Thunderstorm Warnings have been extended eastward to include the R.M.s of Montcalm, Morris, and Emerson-Franklin.
The Severe Thunderstorm Warning has ended for the R.M of Stanley, Rhineland Municipality and R.M. of Montcalm.
"At 3:21 PM CDT Doppler RADAR indicated that this line of severe thunderstorms stretched from Morris southward to the international border and was moving toward the east at 60 km/h," stated the latest update from the forecaster.
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It's an unseasonal occurrence, but Environment Canada has issued Severe Thunderstorm Warnings for the R.M.s of Stanley and Rhineland, including Morden, Winkler, Plum Coulee and Altona.
"A warm front pushing northward out of North Dakota is triggering the storms," explained CMOS Accredited Weathercaster Chris Sumner. "The relatively warm and moist air-mass over the region is providing the fuel for these storms that are moving easterly to northeasterly."
For the latest Warning and Watch information, as well as the current forecast, click here.
The Warnings were issued shortly after 2 p.m., and according to Environment Canada it was because, "Doppler RADAR indicated that this line of severe thunderstorms stretched from Morden southward to the international border and was moving toward the east at 50 km/h."
According to the forecaster, the main threats from this area of thunderstorms is potentially hail and strong wind gusts.
"This latest round of thunderstorms comes after a previous round Monday morning which brought measurable rainfall to much of the Pembina and Red River Valleys," noted Sumner. "We'll have a full Rainwatcher report on Tuesday morning on PembinaValleyOnline."
A Severe Thunderstorm Watch remains in effect for the remainder of the Pembina and Red River Valleys.
According to Sumner, the risk of severe thunderstorm activity will last into the early evening hours, with non-severe thunderstorms and showers expected into the overnight hours into the early morning hours of Tuesday.
The below photos were submitted, including from Brayden Friesen, showing street flooding in Winkler Monday evening. The corner of Roblin Boulevard East and Kimberly Road (near the Southland Mall) is a usual spot for street flooding during heavy and/or prolonged rain events over the city.