US Heatwave: California, Arizona, and Nebraska Face Extreme Temperatures
Record-breaking heat gripped the southwestern United States this weekend, with temperatures exceeding 100 degrees Fahrenheit in parts of California and Arizona, and extending as far north as Nebraska – an anomaly occurring just days into spring. The National Weather Service predicted a high of 100 degrees in Tucson, Arizona, even as the Yuma Desert was forecast to reach 105 degrees, following a record-breaking 112 degrees on Friday, the highest March temperature ever recorded in the United States.
The extreme temperatures are prompting concerns about public safety and strain on resources. City of Phoenix Park Ranger Sam Weller directed hikers away from closed trails at Camelback Mountain on Thursday, a sign of the escalating conditions. Win Marsh, a hiker with her husband Stephen, described their decision to cut short an 800-mile trek along the Arizona Trail. “We know our limits,” Marsh said Saturday. “You can’t hike when our bodies can’t cool down. There’s no shade out there, and water sources are drying up. We promised our kids we wouldn’t do sketchy stuff. We’re not out there for a search-and-rescue event.”
The heat wave has already shattered previous records. Martinez Lake, Arizona, reached 110 degrees on Thursday, surpassing the previous national record of 108 degrees, which had been tied in North Shore, California, and previously set in Rio Grande City, Texas, in 1954 and 1902. On Friday, Martinez Lake broke its own record, hitting 112 degrees, a mark matched by Yuma, New Mexico, and both Ogilby and Winterhaven, California. At least 125 cities across the West have already tied or broken March record highs.
Experts attribute the unusual warmth to a strong heat dome, but emphasize that climate change is exacerbating the situation. A recent analysis by World Weather Attribution found that this heat wave would have been “virtually impossible” without human-induced climate change. The early arrival of such intense heat, before seasonal acclimation, is increasing the risk of heat-related illnesses, particularly among vulnerable populations.
The heat extends beyond the Southwest. Temperatures exceeding 32 degrees Celsius were forecast across Nebraska before a significant drop on Sunday. An elevated risk of wildfires prompted a red flag warning in the region. Parts of Texas also experienced temperatures of 32 degrees Celsius or higher on Saturday.
The record-breaking temperatures come as experts predict April, May, and June are likely to be hotter than normal across much of the United States. The National Centers for Environmental Information has not yet validated the most recent temperature readings from temporary weather stations, such as the one at Martinez Lake, Arizona, but the broader trend remains clear.