Very dangerous and potentially life threatening heat and humidity will continue today. Triple digit heat index values can be expected this afternoon across all of eastern Oklahoma and western Arkansas. Maximum heat indices may exceed 115 degrees in some spots. An Excessive Heat Warning is again in effect this afternoon for most of eastern Oklahoma and west central Arkansas, with a Heat Advisory for far northwest Arkansas and immediately adjacent counties in northeast Oklahoma. Late tonight, thunderstorms may move into parts of northeast Oklahoma along an approaching cold front. Areas along and northwest of Interstate 44 will be most likely to see a storm. A limited severe weather potential will exist, with damaging winds being the main threat. Thunderstorms may be ongoing Tuesday morning across parts of northeast Oklahoma. Additional thunderstorm development may occur during the afternoon and evening along the front, likely to the south and east of Interstate 44. A limited severe weather threat will continue with any afternoon and evening development, with damaging winds and marginally severe hail possible. The thunderstorm potential will continue into Wednesday before the front clears the area. Also on Tuesday, dangerous heat and humidity will persist across areas that remain south of the front. Parts of southeast Oklahoma and west central Arkansas can expect maximum heat index values from 105 to 110 during the afternoon. Cooler weather will arrive areawide by Wednesday.
"Hot Town... Summer In the City"
By NWS-Tulsa • Aug 12, 2019