![]() This heat wave is also unusual because it occurred earlier than most. “When you have that warmer baseline, when you do get these extreme events it's just going to get that much warmer,” she said. On a global average, the world has warmed about 1.8 degrees Fahrenheit since 1900. “But it’s a safe assumption, in my view, to blame increasing greenhouse gases for at least some portion of this event,” she said. Karin Bumbaco, Washington’s assistant state climatologist, said that any definitive climate-change link could be demonstrated only by a type of analysis called an attribution study. But in this episode scientists see the fingerprints of climate change, brought on by human-caused emissions of carbon dioxide and other greenhouse gases. In Seattle, there have been only two other days in the last 50 years with temperatures in the triple digits: in 20.Ĭlimate is naturally variable, so periods of high heat are to be expected. The record was broken again Monday as Lytton reached 118 degrees. In Vancouver, British Columbia, this past weekend’s temperatures were far above norms for this time of year, and a village in British Columbia, Lytton, reached nearly 116 degrees, the highest recorded temperature for any place in Canada in its history. The heat has been not only widespread, but also intense, in some places surpassing records by double digits. It shows the extent of the areas experiencing extreme temperatures in the past week. The map above, created by Geert Jan van Oldenborgh, a climate scientist at the Royal Netherlands Meteorological Institute, reflects temperatures since 1979. To understand the magnitude of the departure from historical norms, it helps to visualize it. Heat waves and the “heat domes” that can cause them aren’t rare, but the recent weather that’s been smothering the Pacific Northwest has little precedent in at least four decades of record-keeping. Shaded areas represent places where maximum temperatures in the last week ranked compared with annual maximum temperatures from 1979 to 2020.Please review our full terms contained on our Terms of Service page.Source: ECMWF/Copernicus via KNMI Climate Explorer We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. We assume no responsibility for any decisions made on the basis of the content presented on this site. Weather data is prone to errors, outages, and other defects. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. See all nearby weather stations Disclaimer The details of the data sources used for this report can be found on the Seattle-Tacoma International Airport page. Thunderstorm, Thunderstorm in the Vicinity
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