It was a rainy start to Tuesday throughout much of Southern Manitoba, but for most regions, the bulk of the precipitation fell before noon with mainly sunny conditions for a good part of the later afternoon and evening.
"A low pressure system which came off the Canadian Rockies, and was already pretty packed with Pacific moisture, was reinforced with more moisture as it pulled all the way from the Gulf of Mexico courtesy of the jet stream," explained CMOS Accredited Weathercaster Chris Sumner. "The Red River Valley saw relatively lower totals compared to other parts of the province like the Riding Mountain and Duck Mountains region, as well as parts of Westman and far eastern Manitoba near the Ontario border where amounts, generally, were closer to the 15 to 25mm range, or higher."
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The following totals are for Tuesday, June 4th and are courtesy PembinaValleyOnline Rainwatchers, Environment Canada and the Manitoba Ag Weather Network:
Clearwater - 14.9mm (almost 6/10)
Pilot Mound - 14.1mm
Windygates - 14.0mm
Morden (AAFC station) - 13.5mm
Jordan - 12.2mm (almost half inch)
Winkler (south of city) - 11.9mm
Kane - 11.7mm
Elm Creek/Reinland - 11.4mm
Winnipeg (the Forks) - 11.2mm
Carman - 11.0mm
Manitou - 10.1mm (4/10)
Woodmore - 7.5mm (3/10)
Morris - 6.6mm
Altona - 6.4mm
Gretna - 5.2mm
Dominion City - 5.0mm (2/10)
Emerson - 4.9mm
Steinbach - 4.7mm
25mm = 1 inch
According to Sumner, a windy couple of days are in store for the region, as a low pressure system slowly tracks through central Manitoba into Ontario, and the pressure gradient between it and high pressure to the southwest in the United States, as well as the jet stream being over the Prairies, will set the stage for strong northwesterly gusts between 50 and 60 km/h Wednesday through Thursday night.
"We're also expecting some bands of cloud cover and shower activity to come off that low today and tonight, and that could lead to some widely scattered precipitation," he added. "We're also watching the thunderstorm risk for Wednesday afternoon, with some daytime heating, ample moisture in the atmosphere and colder air aloft in the atmosphere, we could see some non-severe storm development late this afternoon or early evening."
Daytime highs Wednesday are expected to land between 19 and 21, with Thursday a little cooler, possibly 17 to 19, as cooler air form Canada's north is pushed southward by those strong northwesterly winds
That area of low pressure is expected to start breaking down toward the end of the week, and beyond that there is uncertainty regarding what pattern will take hold for the weekend and into early next week.
"There are signs we could be in for a cooler than average Saturday and Sunday as surface high pressure sinks southward out of the north, whereas other forecast models are showing upper level ridging taking hold, and a much warmer airmass moving into the area," said Sumner. "Beyond the weekend, it appears warmer conditions are in store for early next week with seasonal temperatures indicated in the long-rage forecast."