WWUS74 KTSA 120447 NPWTSA Heat Advisory National Weather Service Tulsa OK 1147 PM CDT Tue Aug 11 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 /O.CON.KTSA.HT.Y.0035.000000T0000Z-260815T0100Z/ Benton-Carroll-Washington-Madison-Northern Crawford-Northern Franklin-North and Central Sebastian-Southern Crawford-Central and Southern Franklin-Southern Sebastian-Pushmataha-Choctaw-Washington-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 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT FRIDAY... * WHAT...Heat index values from 105 to 110 each afternoon and overnight lows from the mid 70s to lower 80s expected. * WHERE...All of northwest and west central Arkansas and east central, northeast, and southeast Oklahoma. * WHEN...Until 8 PM CDT Friday. * IMPACTS...Heat related illnesses are possible especially impacting those not acclimated to the conditions or those performing strenuous activities. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke..