“An anomalously strong ridge of high pressure centered over the Four Corners states will lead to a significant heat wave,” the National Weather Service said in a national forecast discussion Tuesday.

An excessive heat warning is in effect for much of Oregon's populated areas, including Portland, Salem, and Eugene. Temperatures are expected to reach the mid-90s, with nighttime temperatures ...

A heat wave is impacting the Pacific Northwest, with temperatures in the upper 80s to over 100 degrees in Washington. Warm nights are a concern as they prevent the body from recovering from daytime ...