Heat dome shatters temperature records across central and southern U.S.

Temperature records were shattered across much of the central and southern United States this week, with several cities logging their highest-ever readings for the month of September as the autumnal equinox approached. The National Weather Service reported that locations from Dallas, Texas, to St. Louis, Missouri, and Memphis, Tennessee, experienced temperatures ranging from the mid‑90s to low‑100s Fahrenheit, surpassing previous September highs by 5 to 12 degrees. The heat surge coincided with a persistent ridge of high pressure that stalled over the region, limiting cloud cover and allowing solar radiation to intensify daytime temperatures.

Meteorologists noted that the unprecedented warmth is consistent with broader seasonal trends linked to climate variability, though they cautioned that a single event does not constitute a definitive shift in long‑term patterns. The record‑setting heat is expected to subside after the equinox, when shorter daylight hours and increasing frontal activity typically bring cooler air masses into the interior. Authorities continue to monitor the situation, urging residents to stay hydrated and take precautions against heat‑related health risks as the region transitions toward fall.