High Pressure Over Western US to Spread East, Arctic Blast Hits Canada
• Record-breaking heat hits Phoenix, Arizona, reaching 105°F (40.5°C) due to a high-pressure system.
• Canada braces for an Arctic blast, with major cities like Saskatoon, Quebec City, and Edmonton expecting sub-freezing temperatures.
• The same high-pressure system causing the US heatwave is driving frigid Arctic air southward into Canada.
High-pressure system causes contrasting conditions
A significant high-pressure system dominating the weather across North America is creating starkly contrasting conditions.
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