FLUS44 KTSA 232150 HWOTSA Hazardous Weather Outlook National Weather Service Tulsa OK 450 PM CDT Sun Aug 23 2026 ARZ001-002-010-011-119-120-129-219-220-229-OKZ049-053-055>071- 073>075-154-172-176-254-272-276-354-376-242200- Benton-Carroll-Washington AR-Madison-Northern Crawford- Northern Franklin-North and Central Sebastian-Southern Crawford- Central and Southern Franklin-Southern Sebastian-Pushmataha- Choctaw-Washington OK-Nowata-Craig-Ottawa-Pawnee-Tulsa-Rogers- Mayes-Delaware-Creek-Okfuskee-Okmulgee-Wagoner-Cherokee-Adair- Muskogee-McIntosh-Pittsburg-Haskell-Latimer-Western Osage- Northern Sequoyah-Northern Le Flore-Northeast Osage- Central and Southern Sequoyah-Central Le Flore-Southeast Osage- Southern Le Flore- 450 PM CDT Sun Aug 23 2026 This Outlook is for Northwest and West Central Arkansas as well as much of Eastern Oklahoma. .DAY ONE...This Evening and Tonight. SEVERE THUNDERSTORM. RISK...Limited. AREA...Northeast Oklahoma and Northwest Arkansas. ONSET...After Midnight. DANGEROUS HEAT. RISK...Elevated. AREA...Parts of Eastern Oklahoma and West Central Arkansas. ONSET...Ongoing. DISCUSSION... Heat index values in the 100 to near 110 degree range will remain common across parts of eastern Oklahoma and west central Arkansas into early evening. The higher of these values are over southeast Oklahoma, along a nearly stalled surface boundary. Conditions will begin to improve after sunset. Overnight tonight, showers and thunderstorms remain forecast to develop across much of eastern Oklahoma and western Arkansas, with the greater potentials along and north of Interstate 40. Instability lifting northeast and interacting with increasing winds aloft will help to create a limited severe risk across parts of northeast Oklahoma and northwest Arkansas. Locally damaging winds are the primary hazard overnight. SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT... Local Spotter Activation May Be Needed. .DAYS TWO THROUGH SEVEN...Monday through Saturday. MONDAY...Thunderstorm Potential...Dangerous Heat Potential. TUESDAY...Dangerous Heat Potential. WEDNESDAY...Thunderstorm Potential...Dangerous Heat Potential. THURSDAY AND FRIDAY...No Hazards. SATURDAY...Dangerous Heat Potential. EXTENDED DISCUSSION... Thunderstorms are likely to be ongoing Monday morning across parts of eastern Oklahoma and western Arkansas before ending by mid afternoon. Hot temperatures are likely to develop across portions of the region Monday afternoon and heat advisories may be required. The hot weather expands and intensifies on Tuesday ahead of slight storm chances Wednesday. The weather pattern remains hot and mostly dry for late week into next weekend. weather.gov/tulsa contains additional information. $$