WWUS74 KTSA 080446 NPWTSA Extreme Heat Warning National Weather Service Tulsa OK 1146 PM CDT Mon Sep 7 2026 ARZ129-219-220-OKZ060>062-066-067-070-071-074-176-272 /O.NEW.KTSA.XH.W.0019.260908T1700Z-260909T0100Z/ North and Central Sebastian-Southern Crawford-Central and Southern Franklin-Tulsa-Rogers-Mayes-Okmulgee-Wagoner-Muskogee-McIntosh-Haskell-Northern Le Flore-Central and Southern Sequoyah ...EXTREME HEAT WARNING IN EFFECT FROM NOON TO 8 PM CDT TUESDAY... * WHAT...Dangerously hot conditions with heat index values up to 112 expected. * WHERE...Portions of northwest and west central Arkansas and east central, northeast, and southeast Oklahoma. * WHEN...From noon to 8 PM CDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors..