US West Coast Braces for Early Spring Heatwave
US West Coast Braces for Early Spring Heatwave
US · Published Mar 17, 2026
The US West Coast is preparing for an early spring heatwave, with temperatures expected to be well above average for mid-March.
The National Weather Service has issued heat advisories for parts of California, including the Bay Area, where temperatures could reach around 90°F (32°C).
The heatwave, caused by a strong high-pressure system, poses significant health risks and environmental impacts, with inland areas potentially exceeding 100°F (38°C).
Early spring heatwave hits US West Coast
The US West Coast is bracing for an unusually early spring heatwave, with temperatures expected to climb significantly above normal for mid-March. The National Weather Service (NWS) has issued heat advisories for several regions in California, including the Bay Area and the central coast, where temperatures could reach around 90°F (32°C). Inland and desert regions are predicted to experience even more extreme heat, with temperatures potentially exceeding 100°F (38°C), and some locations may even surpass 110°F (43°C), challenging long-standing temperature records for the month of March. This intense heat is attributed to a strong, slow-moving high-pressure system, often referred to as a 'heat dome,' which traps hot air over the region.
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