local
What is a high pressure system?
By Leah Rodriguez at KSAT 12 (ABC) - San Antonio News
· 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 Alamo Heights News
In Alamo Heights , the impact of a high pressure system is particularly pronounced due to the city's location within the San Antonio area, where summer heat can be unforgiving. The lack of cloud cover and rain associated with high pressure systems can lead to prolonged periods of drought, affecting local gardens and green spaces. Additionally, the heat trapped by these systems can exacerbate the urban heat island effect, making temperatures feel even hotter in densely populated areas. As the city's residents and visitors navigate the summer months, understanding the role of high pressure systems in shaping the local weather can help inform decisions about outdoor activities and water conservation. The record 63-day dry spell in 1993 serves as a reminder of the potential for extreme weather patterns in the region, highlighting the need for residents to be mindful of water usage and heat safety during periods of high pressure.
About this story
Original reporting by KSAT 12 (ABC) - San Antonio News . Alamo Heights 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) - San Antonio News . Have a tip or correction? Contact our newsroom .
Category: local ·
Published: June 24, 2026 ·
Source: KSAT 12 (ABC) - San Antonio News ·
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) - San Antonio News and curated for Alamo Heights News readers.
Who reported this story? This story was reported by Leah Rodriguez at KSAT 12 (ABC) - San Antonio News. To learn more about how Alamo Heights News selects and reviews stories, see our editorial standards .
Where can I find related coverage? See more local coverage from Alamo Heights News, or browse our daily briefing and topic hubs .
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