The heat wave will begin for many today, others will hop on board tomorrow. Highs will be in the upper 80s and low 90s this afternoon under blue skies. Overnight, lows will drop into the 40s and 50s.

Update: 11:45, Monday, August 25: Multnomah County announced it won't reopen cooling centers today, as temperatures have fallen below emergency thresholds. The forecast still predicts hot weather (low ...

A "heat dome," similar to a heat wave, is a high-pressure system trapping hot air and causing prolonged high temperatures. Heat domes differ from heat waves in their duration and the stagnant nature ...

Heat waves cause devastating impacts across Europe, including agricultural losses, energy usage spikes, health crises, and increased mortality. Recent deadly events in 2003, 2010, and 2022 underscore ...