For the second time this week, a series of severe thunderstorms rumbled across the region early Friday morning, with Warnings again issued for the Morden, Winkler, Altona, Emerson and Vita regions.
"A trough of low pressure moving through the area provided the trigger for the storm development, with the very humid airmass over the region the fuel," explained CMOS Accredited Weathercaster Chris Sumner. "Those storms rode along the periphery of atmospheric ridging over the region during the overnight hours, which was quite evident on RADAR imagery as the strongest thunderstorm cells remained close to the U.S. border."
Meanwhile, in southwestern Manitoba Thursday night, Tornado Warnings were issued for two places, the R.M. Pipestone and Municipality of Two Borders, but none were issued by Environment Canada for the Pembina or Red River Valleys.
Tornado warning near Sinclair, Manitoba. #mbstorm pic.twitter.com/4lPMQrtyJC
— Misheyla Iwasiuk (@MisheylaIwasiuk) July 4, 2025
"Those Warnings issued by Environment Canada were based on RADAR imagery showing rotation in those particular storms," noted Sumner. "Several Stormchasers on the ground also captured the same rotation in videos and pictures posted to social media."
For the latest forecast details, click here.
The following totals are for the evening of Thursday, July 3rd through 7am Friday, July 4th and are courtesy PembinaValleyOnline Rainwatchers and the Manitoba Ag Weather Network:
Schoenwiese - 65.0mm
Windygates - 64.2mm
Lowe Farm (north of) - 57.5mm
Reinland - 54.2mm
Woodmore - 52.5mm
Altona - 50.0mm
Manitou - 38.5mm
Rosenfeld - 35.0mm
Snowflake - 34.9mm
Clearwater - 34.1mm
Dominion City - 30.4mm
Winkler (south of city) - 24.6mm
Cartwright/Somerset - 24.0mm
Morden (in city) - 20mm
Morris - 10.1mm
Jordan - 9.4mm
Kane 2.7mm
Steinbach - 2.5mm
Carman - 1.5mm
Elm Creek - 0.2mm
25mm = 1 inch
According to Sumner, additional showers and non-severe thunderstorms are possible Friday morning, with a good chance of more storms this afternoon.
"Severe thunderstorms are possible Friday afternoon and evening as a cold front sweeps through the area providing the focus for potentially more severe thunderstorm development," he said. "The hot humid airmass from Thursday remains in place today, and that will provide ample fuel for those storms if they are able to fire up. The thunderstorms and cloud cover this morning does complicate matters, somewhat. We need to see some daytime heating and sunshine to develop that severe risk, so we will see whether enough clearing happens."
The above video was submitted by Lois Shetter, and is of lightning near Darlingford around 1:11am Friday, July 4th.
Environment Canada has continued the Heat Warning for the Pembina and Red River Valleys, as well as all of Southeastern Manitoba. A mainly cloudy day is expected after the showers taper off Friday morning, with highs around 30 degrees, but it feeling like nearly 40 by this afternoon.
"Behind the cold front, much cooler and comfortable conditions are expected for the weekend with daytime highs Saturday and Sunday between 22 and 24 degrees, and the humidity much less than it's been," said Sumner.
Average daytime highs for this point in July are around 26 degrees, with overnight lows of 13 degrees.