WWUS74 KTSA 280429 NPWTSA Heat Advisory National Weather Service Tulsa OK 1129 PM CDT Sat Jun 27 2026 OKZ055>057-059>062-064-066-067-070-154-254-354 /O.EXA.KTSA.HT.Y.0007.260628T1800Z-260629T0100Z/ Washington-Nowata-Craig-Pawnee-Tulsa-Rogers-Mayes-Creek-Okmulgee-Wagoner-Muskogee-Western Osage-Northeast Osage-Southeast Osage ...HEAT ADVISORY IN EFFECT FROM 1 PM TO 8 PM CDT SUNDAY... * WHAT...Heat index values up to 106 expected. * WHERE...Portions of east central and northeast Oklahoma. * WHEN...From 1 PM to 8 PM CDT Sunday. * 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..