Monday/ the climax of the heat wave

A visualization of the heat dome over Pacific Northwest on Monday. The thin white lines are isobars at 250 hPa (isobars are lines that connect points of equal atmospheric pressure). The warm colors represent carbon dioxide surface concentration.
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‘The most severe heat wave in the history of the Pacific Northwest is near its climax. The National Weather Service had predicted it would be “historic, dangerous, prolonged and unprecedented,” and it is living up to its billing as it rewrites the record books.

On Monday, Portland, Ore., soared to at least 115 degrees (46 °C), the highest temperature in more than 80 years of record-keeping. It marked the third straight day the city had climbed to an all-time high. On Sunday, it hit 112 (44 °C) Sunday after reaching 108 (42 °C) Saturday, both of which broke the previous all-time record of 107 (41.6 °C) .

Seattle was up to at least 107 degrees (41.6 °C) on Monday afternoon, surpassing the all-time record of 104 degrees (40 °C) set Sunday, which had topped the previous mark of 103 (39.4 °C)’.
– Jason Samenow and Ian Livingston, reporting for the online Washington Post on June 28, 2021 at 5:50 p.m. PDT

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