South‑Central US Bakes as Another Heat Dome Locks In Late Summer Extremes
Summary
A strong heat dome is causing very high temperatures in the south-central United States, including Texas, Oklahoma, and Arkansas, pushing many cities close to or above 100 degrees Fahrenheit as September begins. The heat is linked to warm ocean waters and weather patterns in the Pacific, and August 2026 tied for the hottest month on record worldwide.Key Facts
- A heat dome is a high-pressure weather system trapping hot air, causing extended heat waves.
- Cities like Dallas, Austin, and Oklahoma City have seen many days above 100°F, sometimes double or triple their usual counts.
- Warm ocean temperatures off the West Coast and in the Gulf of Mexico help maintain this heat dome.
- August 2026 matched July 2023 as the hottest month ever recorded globally.
- Sea-surface temperatures outside polar regions reached record highs in August 2026.
- The heat dome covers large parts of Texas, Oklahoma, Arkansas, Louisiana, and nearby southeast states.
- Hot weather continues despite the weakening sun as the autumn equinox approaches.
- The heat can worsen air quality and increase risks for storms on the dome’s edges.
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