Double-Peaked Heatwave to Intensify Across Southwest U.S.
A significant heatwave is set to impact the Southwest U.S., with a double-peaked event expected to persist into early August. According to Weather West, a strong Western ridge will drive record-breaking temperatures, particularly in Southern California, Arizona, and Nevada. Coastal Southern California is experiencing elevated humidity due to near-record sea surface temperatures, with dewpoints reaching tropical levels of 70°F (21°C). This combination of heat and humidity is amplifying health risks. The first peak of the heatwave is expected this weekend, followed by a second surge mid-next week. Hurricane Genevieve, currently in the East Pacific, is indirectly contributing to the ridge's intensity, further exacerbating the heatwave.