WWUS74 KTSA 170338 NPWTSA Heat Advisory National Weather Service Tulsa OK 1038 PM CDT Wed Sep 16 2026 ARZ129-219-220-OKZ055>058-060>063-066>071-073>075-172-176-272 /O.EXT.KTSA.HT.Y.0062.260917T1700Z-260918T0000Z/ North and Central Sebastian-Southern Crawford-Central and Southern Franklin-Washington-Nowata-Craig-Ottawa-Tulsa-Rogers-Mayes-Delaware-Okmulgee-Wagoner-Cherokee-Adair-Muskogee-McIntosh-Pittsburg-Haskell-Latimer-Northern Sequoyah-Northern Le Flore-Central and Southern Sequoyah ...HEAT ADVISORY NOW IN EFFECT FROM NOON TO 7 PM CDT THURSDAY... * WHAT...Heat index values up to 108 expected. * WHERE...Portions of northwest and west central Arkansas and east central, northeast, and southeast Oklahoma. * WHEN...From noon to 7 PM CDT Thursday. * 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..