Last mentioned: Mar 22, 2026
Grid Stress Peak
Regional utilities report highest March electricity demand in a decade as cooling systems activate early.
Northern Expansion
The heat plume reaches Nebraska and Kansas, with temperatures in Omaha hitting the mid-80s.
Southwest Records Fall
Phoenix and Las Vegas record temperatures exceeding 95°F, breaking 40-year-old daily records.
Heat Dome Formation
High-pressure system begins intensifying over Northern Mexico and the Arizona border.
An unseasonably intense heatwave is gripping the Southwest United States and extending as far north as Nebraska, shattering temperature records for late March. The event is forcing an early start to the cooling season and raising significant concerns regarding grid reliability and agricultural stability.