It’s not unusual for officials in Texas to issue heat advisories around this time of year, said Monte Oaks, a meteorologist at the Weather Service’s San Antonio office. They typically do so when high temperatures combine with other factors, including high humidity and westerly winds that blow hot air from high-altitude deserts, he added. In this case, Mr. Oaks said, the humidity is high because Texas had a wetter and stormier spring than usual. But it also means that the hot ground is “cooking a lot of the moisture” and releasing it into the air. But there is enough supply to meet the demand, the company added, and it does not expect an “energy emergency.”Global warming is making dangerously hot weather more common, and more extreme, on every continent.

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Persons: Oaks, Cindy Barkley Organizations: Texas, Electric, of Texas, Climate Central, Texas Department of Public Safety, Sheriff’s Locations: Texas, Oaks, Antonio, Mexico