local
What is a high pressure system?
By Leah Rodriguez at KSAT 12 (ABC affiliate) — San Antonio
· June 24, 2026
· 3 min read
It’s that time again when the ‘heat high’ becomes the main character of the weather story. Sometimes the high can be relentless and result in endless days of scorching summer heat. So why do we call it a “heat high,” and why do we hear about it so often? What is a high pressure system?A high pres...
Key takeaway A high pressure system can cover Texas or the entire southwestern United States.
Why this matters in Terrell Hills News
For Terrell Hills residents, the persistence of high pressure systems during the summer months can have significant implications for daily life. As these systems trap heat and prevent cloud cover, temperatures can soar, leading to increased energy consumption and strain on the local power grid. The resulting heatwaves can also exacerbate drought conditions, affecting local landscaping and gardening efforts. Furthermore, the prolonged periods of dry weather can increase the risk of wildfires in the area, making it essential for residents to remain vigilant and take precautions to prevent accidental fires. As the summer months approach, Terrell Hills residents would do well to stay informed about the development and movement of high pressure systems, and take steps to mitigate their effects on the community. By understanding the role of high pressure systems in shaping local weather patterns, residents can better prepare for the challenges that come with San Antonio's notoriously hot summers.
About this story
Original reporting by KSAT 12 (ABC affiliate) — San Antonio . Terrell Hills News surfaces reporting from trusted publishers and adds local editorial context so readers can quickly understand what a story means for their community. We attribute every source, link to the original report, and follow a documented editorial standards policy. To understand how stories are selected and reviewed, read our about page .
For the complete original report, visit KSAT 12 (ABC affiliate) — San Antonio . Have a tip or correction? Contact our newsroom .
Category: local ·
Published: June 24, 2026 ·
Source: KSAT 12 (ABC affiliate) — San Antonio ·
Reading time: 3 min
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Frequently asked about this story
What is this story about? It’s that time again when the ‘heat high’ becomes the main character of the weather story. Sometimes the high can be relentless and result in endless days of scorching summer heat. So why do we call it a “heat high,” and why do we hear about it so often? What is a high pressure system?A high pres...
When was this published? This article was first published on June 24, 2026 by KSAT 12 (ABC affiliate) — San Antonio and curated for Terrell Hills News readers.
Who reported this story? This story was reported by Leah Rodriguez at KSAT 12 (ABC affiliate) — San Antonio. To learn more about how Terrell Hills News selects and reviews stories, see our editorial standards .
Where can I find related coverage? See more local coverage from Terrell Hills News, or browse our daily briefing and topic hubs .
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