The National Weather Service has issued another heat advisory for portions but not all of east-central and northern Oklahoma, including the immediate Tulsa metro. Additional counties may be added later today. Regardless, heat stress will continue to increase.
A mid-level ridge of high pressure is expected to strengthen and expand across the state this weekend, keeping organized showers and storms away from Oklahoma while ushering in a hot and humid air mass. Morning lows will range from the mid to upper 70s, with daytime highs reaching the upper 90s under mostly sunny skies with a few clouds.
A very low-end chance of an isolated shower or storm will persist through the daytime heating process across extreme eastern Oklahoma and western Arkansas. These events will be highly localized, mainly affecting small parts of Latimer, Le Flore, Sequoyah County, and areas eastward into northern or western Arkansas. The probability remains near 5% for these zones.
Heat advisories are likely for part of eastern Oklahoma this weekend, with heat index values ranging from 105 to near 110. The pattern continues to support heat and humidity as the dominant weather feature for several days next week. Expect little variation in temperatures, with morning lows in the upper 70s to lower 80s and daytime highs in the upper 90s Monday through Wednesday. A few southern locations may reach 100 degrees Thursday or Friday, though significant moisture and evapotranspiration from recent rainfall may keep most areas slightly below the century mark.
Area lake levels remain high but are slowly improving. Check ahead as high water levels may impact some recreational areas.
If you're planning to spend time near the Illinois River this weekend, be aware that rising water levels have prompted several flood alerts from the National Weather Service in Tulsa.
Here’s a breakdown of what’s happening and where:
Illinois River near Watts (Adair & Delaware Counties)
Illinois River near Tahlequah (Cherokee County)
Illinois River at Chewey (Cherokee, Adair & Delaware Counties)
For the latest information on river levels and flood safety, visit weather.gov/safety/flood.
Water levels are expected to peak between Friday evening and early Saturday, with conditions improving later in the weekend. Stay safe and check conditions before heading to the river.
The daily morning weather podcast briefing will remain on hold indefinitely due to ongoing internal workflow issues.
We're working to resolve these challenges as soon as possible and appreciate your patience. We apologize for the inconvenience and hope to be back soon. Thank you for your understanding.
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Northeast Oklahoma has various power companies and electric cooperatives, many of which have overlapping areas of coverage. Below is a link to various outage maps.