643 WWUS74 KTSA 210352 NPWTSA URGENT - WEATHER MESSAGE National Weather Service Tulsa OK 1052 PM CDT Mon Jul 20 2026 OKZ068-172-211800- /O.UPG.KTSA.HT.Y.0020.260721T1700Z-260722T0100Z/ /O.EXA.KTSA.XH.W.0003.260721T1700Z-260722T0100Z/ Cherokee-Northern Sequoyah- Including the cities of Marble City and Tahlequah 1052 PM CDT Mon Jul 20 2026 ...EXTREME HEAT WARNING IN EFFECT FROM NOON TO 8 PM CDT TUESDAY... * WHAT...Dangerously hot conditions with heat index values from 110 to 115 expected. * WHERE...Cherokee and Northern Sequoyah Counties. * WHEN...From noon to 8 PM CDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ARZ129-219-220-OKZ055>058-060>063-066-067-070-071-074-176-254-272-354-211800- /O.CON.KTSA.XH.W.0003.260721T1700Z-260722T0100Z/ North and Central Sebastian-Southern Crawford-Central and Southern Franklin-Washington OK-Nowata-Craig-Ottawa-Tulsa-Rogers- Mayes-Delaware-Okmulgee-Wagoner-Muskogee-McIntosh-Haskell- Northern Le Flore-Northeast Osage-Central and Southern Sequoyah- Southeast Osage- Including the cities of Pryor, Claremore, Okmulgee, Cravens, Charleston, Wagoner, Sallisaw, Grove, Fort Smith, Lonelm, Miami, Van Buren, Bartlesville, Tulsa, Hominy, Muskogee, Pawhuska, Cecil, Ozark, Jay, Nowata, Jethro, Arkoma, Vinita, Watalula, Pocola, Checotah, Stigler, Spiro, and Panama 1052 PM CDT Mon Jul 20 2026 ...EXTREME HEAT WARNING REMAINS IN EFFECT FROM NOON TO 8 PM CDT TUESDAY... * WHAT...Dangerously hot conditions with heat index values from 110 to 115 expected. * WHERE...Portions of northwest and west central Arkansas and east central, northeast, and southeast Oklahoma. * WHEN...From noon to 8 PM CDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ARZ229-OKZ049-053-059-064-065-073-075-154-276-376-211800- /O.CON.KTSA.XH.W.0003.260721T1700Z-260722T0100Z/ Southern Sebastian-Pushmataha-Choctaw-Pawnee-Creek-Okfuskee- Pittsburg-Latimer-Western Osage-Central Le Flore-Southern Le Flore- Including the cities of Okemah, Talihina, Mansfield, Patterson, Huntington, Hugo, Pawnee, Fairfax, McAlester, Clayton, Sapulpa, Shidler, Poteau, Wilburton, Antlers, Hartford, and Liberty 1052 PM CDT Mon Jul 20 2026 ...EXTREME HEAT WARNING REMAINS IN EFFECT FROM NOON TO 8 PM CDT TUESDAY... * WHAT...Dangerously hot conditions with heat index values from 110 to 115 expected. * WHERE...Portions of 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. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ ARZ001-002-010-011-119-120-OKZ069-211800- /O.CON.KTSA.HT.Y.0020.260721T1700Z-260722T0100Z/ Benton-Carroll-Washington AR-Madison-Northern Crawford-Northern Franklin-Adair- Including the cities of Huntsville, Bentonville, Eureka Springs, Berryville, Rogers, Mountainburg, Barnes, Fayetteville, Springdale, Stilwell, and Paradise 1052 PM CDT Mon Jul 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TO 8 PM CDT TUESDAY... * WHAT...Heat index values up to 110 expected. * WHERE...In Arkansas, Benton, Carroll, Madison, Northern Crawford, Washington AR, and Northern Franklin Counties. In Oklahoma, Adair County. * WHEN...From noon to 8 PM CDT Tuesday. * IMPACTS...Heat related illnesses are possible especially impacting those not acclimated to the conditions or those performing strenuous activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$