A significant heat dome has taken hold over the Pacific Northwest, posing a threat to historical daily temperature records in six western states today. Seattle and Portland shattered daily records during the initial heat wave from June 13 to 15, reaching 91°F and 97°F respectively. A more intense heat surge followed on June 22, with AccuWeather predicting temperatures in Seattle nearing the low 90s, where the record from the 1992 heat wave is only 92°F. Phoenix is forecasted to reach 110°F this week, while Fresno, California, may experience several days above 100°F. Meteorologists caution about the heightened risk of severe heat-related illnesses.
