West sizzles under record heat; when will it finally end?
• The western U.S. is under a historic heatwave, with temperatures soaring 15–30°F above normal.
• Relief is expected by the weekend as the jet stream shifts, bringing cooler Pacific air and possible showers.
• Climate change is exacerbating heatwaves, necessitating adaptation and mitigation strategies.
Western U.S. faces historic, record-breaking heatwave
The western U.S. is currently experiencing a historic heatwave, with temperatures ranging from 15–30°F above normal. Cities across the Southwest, from California to Texas, have broken numerous daily and monthly temperature records, with Phoenix approaching a record number of 100°F days for March. This intense heat is being caused by a strong heat dome, which is expected to persist through Friday and expand into the Plains.
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