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Weekly Market Snapshot: Yields at Multi-Decade Highs, Oil Eases on Hormuz Hopes — Week of Sept. 22–26, 2026

Week of September 22–26, 2026 It was a week of two forces tugging in opposite directions. Bond yields surged to levels not seen since 2004–2007, driven by resilient US economic data, hawkish Fed signals, and oil-driven inflation fears — putting pressure on equities and the Canadian dollar. Then, late in the week, reports emerged that US and Iranian negotiators were exploring a phased deal to reopen the Strait of Hormuz. Oil pulled back sharply Friday, yields stabilized, and markets found enough relief to post a partial recovery. The TSX finished the week slightly lower but well off its worst levels, while US indices managed a weekly gain. 🍁 Canada — TSX & the Loonie The S&P/TSX Composite entered the week near 35,800 and, after a volatile ride, closed Friday around the same level — giving up roughly 0.3% on the week. Mid-week selling was driven by the same forces pressuring global markets: surging US Treasury yields, a rising oil-inflation premium, and investor nervousness ahea...

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Hot, Humid Air Fuels Thunderstorm Risk in Southern Ontario

 

As the intense heat and humidity persist, southern Ontario remains under the threat of thunderstorms. High temperatures and moisture create favorable conditions for storm development, with the risk extending into the weekend.

Heat and Humidity: Key Drivers

  • Heat Dome: The Great Lakes region is currently enveloped by a heat dome, amplifying the risk of thunderstorms.
  • Unstable Atmosphere: Thursday will see an unstable atmosphere, allowing for additional thunderstorm activity.
  • Uneven Heating: Pockets of uneven heating throughout the day, along with convergence, will determine localized storm activity.

Potential Impacts

  • Severe Storms: Some thunderstorms could become severe due to torrential rainfall and locally gusty winds.
  • Heavy Rainfall: Ample moisture in the atmosphere means heavy rain, especially if storms linger over the same location.
  • Localized Flooding: Urban areas are at risk of flash flooding as storms move slowly across.

Stay Prepared

  • Widespread Heat Warnings: Temperatures soar into the 30s, feeling even hotter with the humidex.
  • Evening and Overnight Storms: Another round of thunderstorm activity is possible during these hours.


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