Tulsa, Oklahoma – Triple-digit heat is bearing down on eastern Oklahoma and western Arkansas today, with heat index values reaching up to 108°F by late afternoon. A Heat Advisory remains in effect until 7 p.m. Sunday, threatening outdoor plans and raising the risk of heat-related illness.
According to the National Weather Service in Tulsa, the advisory spans much of eastern Oklahoma—including Tulsa, Muskogee, and Bartlesville—and parts of western Arkansas, such as Fort Smith and Van Buren. Peak heat index values between 105°F and 108°F are expected from noon through early evening.
Cities like Claremore, Okmulgee, and Poteau are also under the alert. Officials are urging residents to avoid strenuous activity during peak hours, wear light clothing, and stay hydrated. Vulnerable groups—including outdoor workers and those without air conditioning—are especially at risk.
This is the region’s first major heat advisory of the summer, and NWS says conditions could worsen with similar heat likely through the early part of next week. Heat illness symptoms include dizziness, nausea, and confusion—immediate action is critical.
Warnings remain in effect through this evening, and additional advisories may be issued if the heat persists into Monday.
