ENVIRONMENT

United States braces for new western heat dome

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Read, Watch or Listen

The US National Weather Service has issued Extreme Heat Watches for large areas of Montana, northern Wyoming, and Utah as a powerful heat dome develops over the western United States. Issued on 8 July 2026, the watches cover conditions expected from Saturday, 11 July, through late Sunday, 12 July, with widespread temperatures above 38°C (100°F) and some locations nearing 43°C (110°F). Forecasters warn of limited nighttime relief, sharply increasing risks of heat-related illness, especially for vulnerable people and outdoor workers. The system is expected to expand into western Canada and follows a late June–early July eastern US heatwave linked to at least 44 deaths.

Prepared by Olivia Bennett and reviewed by editorial team.

Timeline of Events

Late June 2026 Eastern United States heatwave intensifies
Early July 2026 At least 44 heat-related deaths confirmed
Late June–early July 2026 Eastern temperatures exceed 38°C widely
July 8 2026 Extreme Heat Watches formally issued
July 8 2026 Forecasters identify strengthening western heat dome
July 11 2026 Western daytime highs surpass 38°C
July 11–12 2026 Limited overnight cooling worsens risks
Mid-July 2026 Heat dome expands into western Canada

Why This Matters to You

This heat dome means serious health risks, especially for the elderly, kids, and outdoor workers. It's crucial to stay hydrated, limit outdoor activities, and check on vulnerable neighbors. Remember, heatstroke can happen fast.

The Bottom Line

Extreme heat is more than just uncomfortable—it's deadly. This is the second major heatwave in just a few weeks. Climate change isn't a future problem, it's here. Worth forwarding if you know someone in the western US or Canada.