High temperature records are expected to fall this weekend as a high pressure system sits over Texas, according to the National Weather Service office in New Braunfels.
NWS meteorologist Orlando Bermudez said the high pressure system acts like a dome blocking cloud formation, precipitation and most breezes.
A heat advisory is now in effect and will likely be extended through the weekend with highs each day above 100 degrees, he said. The advisory is in effect for counties along and west of I-35 and I-37.
The heat indices, or how the air temperature feels, could reach 111 degrees this weekend.
Under a heat advisory, local residents are encouraged to stay hydrated, avoid strenuous outdoor activities, check on the elderly and those without air conditioning and to never leave children or pets in a vehicle.
Bermudez said the high pressure system sits over the four corners of Texas, Oklahoma, Colorado and New Mexico but should shift to the west, to the feet of the Rockies, early next week, which should help ease the intense heat.
But forecasters said the relief will be short because a similar weather pattern will soon return to the region.
The record high for Saturday’s date is 103 and was set in 2014. The hottest day in San Antonio history since records began in 1885 was 111 degrees on Sept. 5, 2000.
The Edwards Aquifer Authority reported the aquifer water level was just seven feet above the mark where stage two water restrictions are triggered.
San Antonio residents are currently under stage one water restrictions, which allow residents to water lawns and landscaping with sprinklers and irrigation systems just one day a week based on street address.
Under stage two, residents still follow the once a week watering schedule, but the window of hours to water on those days is cut in half.
Brian Kirkpatrick can be reached at Brian@tpr.org and on Twitter at @TPRBrian.
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