TULSA, OK — An unrelenting heat wave continues gripping the southern Plains and much of the South-Central United States, with forecasters indicating a strong likelihood that Tulsa and the surrounding region could finish among the top five warmest stretches of 100-degree days ever recorded for the month of September based on current forecast trends.
A Persistent Ridge Dominates the Pattern
Big picture weather maps show a dominant area of high pressure, marked by a large H, anchored over the Southern Plains and stretching into the Mid-South and Southeast, with an expansive area of red and orange shading representing intense heat spanning from Texas and Oklahoma through Arkansas, Louisiana, and into the Southeast. This ridge has proven remarkably stable, allowing heat to build day after day beneath it while steering any meaningful storm systems well to the north across Montana, the Dakotas, and into Canada.
Little Weakness Shows Up in the Jet Stream
The core issue driving this extended heat wave lies in the position and strength of the jet stream, which currently shows very little weakening anywhere close to the affected region. The jet stream, visible as a band of stronger upper-level winds arcing across the northern tier of the country from the Pacific Northwest through the Great Lakes and into the Northeast, remains displaced well to the north, leaving the ridge beneath it free to keep reinforcing the heat across Oklahoma and neighboring states with little interruption.
Forecast guidance extending out toward September 12 shows the same basic pattern holding firm, with the high pressure ridge, again marked prominently over the region, continuing to dominate and keep temperatures elevated well beyond the typical late-summer timeframe when many areas begin trending toward more autumn-like conditions.
Temperature Timeline Shows No Signs of Breaking
A ten-day temperature outlook for the Tulsa area illustrates just how locked in this pattern has become, with forecast highs holding remarkably steady in the 98 to 102-degree range across nearly the entire period, from the upcoming Sunday through the following Friday. That kind of sustained, unwavering heat across more than a week of forecast data underscores the strength and persistence of the ridge responsible, offering little day-to-day variation that might otherwise hint at an approaching break in the pattern.
Communities across the broader region, including Oklahoma City, Wichita, Little Rock, and Dallas, remain similarly entrenched within the same dome of high pressure, meaning the extended heat wave is not an isolated Tulsa phenomenon but rather a widespread feature affecting a large swath of the south-central United States simultaneously.
Scattered Storm Chances Offer the Only Hope
Despite the overwhelmingly hot and dry pattern, isolated pockets of green shading on the forecast maps indicate scattered showers and thunderstorms have managed to develop in a handful of locations, mostly across parts of Texas, the Gulf Coast, and portions of the Ohio Valley and Northeast. However, forecasters were clear that the best opportunity for more organized scattered thunderstorm activity across the core heat-affected region likely will not materialize until late next week, when subtle shifts in the pattern may finally allow for slightly better rain chances to develop…