17 May 2023

Heat Wave Shatters Records

 

Pacific Northwest heat wave shatters records

Map of forecast temperature anomalies from Monday through Wednesday May 17 in degrees Fahrenheit.

Map of forecast temperature departures from average during Monday through Wednesday May 17 in degrees Fahrenheit. Image: Climate Reanalyzer/University of Maine

A stifling heat wave enveloping the Pacific Northwest and western Canada is expected to expand this week, threatening more temperature records.

The big picture: The weather map looks "strongly reminiscent" of late June 2021, which produced a deadly excessive heat event in the Pacific Northwest, experts say.

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