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Prairies: Lingering storm threat with locally heavy downpours

Tuesday, July 9th 2019, 10:13 am - The severe thunderstorm threat eases slightly through Tuesday, but with localized storms that could produce heavy downpours.

After days of severe thunderstorms that spread across the Prairies, the storm risk lingers over the region although with a little less potency as humidity finally wanes through the day Tuesday. Temperature-wise, a pleasant and comfortable rest of the week is ahead, although with the threat for widespread stronger storms returning as early as Thursday. More on the timing of these storms and the building heat lat week, below.

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WEATHER HIGHLIGHTS:

  • Thunderstorm risk moves back over western Alberta, eastern Saskatchewan, and southern Manitoba Tuesday, though not a significant threat
  • Main threats are small hail, heavy rain, and strong winds Tuesday
  • Watching for another risk for severe storms across central Alberta on Wednesday
  • Moderate temperatures until the weekend, when heat and humidity return
  • Latest watches and warnings HERE

The humidity that helped fuel some of the powerful storms over the last few days has subsided with less of a significant storm threat expected over the next couple of days. A low pressure system tracking across the High Plains of the U.S. however, will bring widespread rainfall to the southeastern Prairies. This system will also spark some thunderstorm development across southeastern Saskatchewan and southern Manitoba through Tuesday afternoon and evening with strong winds and small hail some of the primary concerns.

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"The good news is the hail size is expected to be below warning criteria, generally two centimetres in diameter or less, so that's good news for infrastructure and properties," says Weather Network meteorologist Tyler Hamilton.

With high amounts of moisture in the atmosphere, however, locally heavy downpours could impact areas where stronger storms develop across the region. These localized storms could produce 50+ mm of rain in a short period of time.

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Mostly non-severe thunderstorms will also initiate along the central foothills in Alberta Tuesday afternoon, potentially producing pockets of heavy rain, strong winds and small hail as well.

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By Wednesday, the active weather will pull out of Saskatchewan with some lingering rain showers and storms lasting through the morning hours in southern Manitoba.

"The eastern Prairies will then remain fairly quiet through the afternoon and evening with Alberta being the focus for active weather on Wednesday," says meteorologist Kelly Sonnenburg.

MORE WIDESPREAD STORM RISK BY THURSDAY

A low pressure system will develop lee of the Rockies across central regions of the province, bringing a rain and thunderstorm risk to central regions including Edmonton.

As the system begins its trek east, the storm risk becomes much more widespread on Thursday, draping from Alberta through parts of southern Saskatchewan and into southern Manitoba.

"Heat and humidity will also build back into southern Saskatchewan and Manitoba through the late week with temperatures climbing into the high 20's," Sonnenburg adds.

Stay with us here at The Weather Network for your latest forecast updates.

WATCH BELOW: CLOUDS THE SAME HEIGHT AS A VOLCANIC ERUPTION IN MANITOBA MONDAY, SEE IT HERE

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