Record-Breaking Heatwave in Southern and Southwestern United States
Over 57 million people in the American South and Southwest have been placed under an excessive heat warning as temperatures soar to record-breaking levels. The Gulf Coast and parts of the Southwest have experienced the most severe heat conditions, and these highs are expected to persist through early next week.
The heat warnings have extended even further north than usual, reaching Southern Illinois and the region surrounding St. Louis. These areas are expected to have their seventh consecutive day of heat indexes over 100 degrees. A heat index takes into account humidity levels to determine the true feel of the temperature, which can be much higher than the actual air temperature.
Forecasters from the Weather Prediction Center have issued alerts, stating that “extreme heat and abnormally high overnight temperatures will persist in the South” over the weekend. They further predict that widespread record-high and -low temperatures are likely to be tied or broken across the Gulf Coast.
Additionally, 54 million people in the Southeast and Pacific Northwest are under a heat advisory. Residents in these areas are being warned not to underestimate the health risks associated with extreme heat, as it can lead to serious illness or even death.
In the New Orleans region, the heat index is expected to reach “oppressive” levels. Covington is projected to reach 118 degrees, while Baton Rouge and New Orleans may see temperatures as high as 115 degrees. Both cities are also on track to break daily temperature records, with a forecasted high of 102 in New Orleans and 105 in Baton Rouge.
Phoenix residents, on the other hand, can expect a high of 113 degrees, with a stretch of record-breaking temperatures anticipated through early next week. Monday and Tuesday could see temperatures reaching 115 degrees.
The punishing heat conditions in the South have persisted throughout the summer, aggravated by high humidity and a lack of rainfall. While individual weather events cannot be directly attributed to climate change, there is a consensus among scientists that heatwaves worldwide are becoming hotter, more frequent, and longer-lasting.
According to the 2018 National Climate Assessment, the number of hot days in the United States has increased, with heatwaves now occurring six times a year on average compared to two times per year in the 1960s. Additionally, the heatwave season is now 45 days longer than it was in the 1960s.
It is crucial for residents in affected areas to take precautions and stay hydrated during this extreme heatwave.