US west coast prepares for 'dangerous' heatwave in early spring
AI Summary
An unusually early and significant heatwave is building across the southwestern US, impacting California, Nevada, and Arizona. Beginning as early as Wednesday, temperatures are forecast to reach 20-30F above normal, potentially exceeding 100F in Phoenix and challenging March records in other areas. The National Weather Service has issued heat advisories, warning of dangerous conditions, especially for those unaccustomed to the heat. The prolonged heatwave, caused by a slow-moving high-pressure system, poses health risks and threatens to accelerate snowpack melt in the Sierra Nevada, potentially leading to summer water shortages and an increased risk of wildfires later in the year. Residents are urged to take precautions and check on vulnerable individuals.
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