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U.S. Northwest Braces for Record Heat, Strained Power Grids

  • Heat will spread into Canada as temperatures soar across West
  • California grid operator monitoring weather conditions closely
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Photographer: David Paul Morris/Bloomberg
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Record heat is set to bear down on the Pacific Northwest, threatening fresh strains on regional power and water supplies and dragging down air quality through next week.

Monthly and all-time high temperatures could envelop Washington, Oregon, Idaho, and Montana, with warming starting to build on Saturday and lasting into next week, said David Roth, a senior branch forecaster at the U.S. Weather Prediction Center. Readings will rise in California and Nevada on Sunday. The sultry air will trap pollution, raising risks for people with respiratory problems.